To add even more numbers conflict, here's what the BYD booth showed at the very end of the MotorExpo.

 

I think BYD are now considered as safe and mainstream as Toyota in Thailand and you can say BYD in the same sentence as Toyota.

 

Regarding Toyota's pricing of its new EV (Bz4x?).  I think their strategy is to sell at a loss or at least on very low margins to get themselves in the market.  I'm not sure how sustainable that will be; and if their usual customers pivot away from ICE to EV's it could significantly affect their profitability here.  It's not a strategy they can probably sustain globally and in the USA they don't need to.

 

I was also thinking about the pricing fiasco we have had in Thailand, with EV's prices dropping constantly.  Because there are so few components in an EV and electric motors are cheap, I don't think there is any justification for high prices.  EV's should be about half the price of comparable ICE cars, especially now battery costs have dropped and are continuing to drop substantially.

 

EV's should be cheaper every year.

HA!

On 12/13/2025 at 3:19 PM, CLW said:

<snipped>

5.) Mazda 6e. I really like the design and interior. But would you really pay more for a re-badged BYD?

<snipped>

 

Not a re-badged BYD, a re-badged Deepal (Changan).

11 minutes ago, mistral53 said:

HA!

 

 

EV battery warranties are getting longer as the manufacturers gain more confidence in their own EV & batteries---and of course are now building-up a lot of good real-world battery failure data vs only laboratory testing/computer projections data.

 

Quote

 

AI Overview

In Europe, BYD electric vehicles come with an 8-year/200,000 km battery warranty (recently extended to 250,000 km in some markets like Norway) that covers manufacturing defects and capacity degradation. Battery replacements under warranty are handled by authorized BYD service partners if specific conditions are met. 

 

 

On 12/13/2025 at 9:19 AM, CLW said:

1.) Deepal Hunter K50. The battery size and range must be a joke? 

OMG I was looking for this one

 

range 131km, price 1.1M. Well still they sold 2 or 3 in 2025. 

Maybe they said if Toyota can offer a pickup with under 300km range, we can do even better. 

On 12/11/2025 at 4:18 PM, Pib said:

 

What I found amazing is Toyota "barely" beat-out BYD for 1st place......and Omoda Jaecco---a new  comer--came in 3rd with a 620% growth over 2024 beating out Honda who came in 4th.   And Isuzu dropped down to 11th place.  Chinese vehicle manufacturers are simply stepping over the  Ol' Guard Japanese, EU, and US vehicle manufacturers. 

    I would add Nissan at number 14.  14!   Really shows a lack of fresh product here--and for a number of years now.  It seems they are finally bringing the X-Trail in, a model and design my spouse and I liked--but way back in 2021 when it debuted in the US.  Nice and fresh in 2021, dated now when it is almost 2026.  We would have bought one had it been available here in 2021.  Now, there are probably at least a half-dozen Chinese models we would choose instead.  

On 12/13/2025 at 10:49 AM, Pib said:

 

 

 

Yesterday evening I got a call from a nearby BYD dealership here in western Bangkok if I could bring my Atto in next day for the lifetime battery warranty purchase and inspection.  This is one of three dealerships I had contacted in person 7-10 days ago trying to arrange purchase of the warranty but things were still kinda in disarray at the time in terms of dealerships awaiting forms/guidance from Rever.  At one of the three dealerships they did make an appt for battery inspection in late December for purchase and inspection as they figured guidance would be firm by then...and even last week when I stopped in again trying to get an earlier appt (which they couldn't do) apparently guidance had firmed up but now it was simply an issue of getting a battery inspection appt for the  many, many people who wanted to get the warranty.

 

Well, that next day is now today and I just completed the lifetime battery warranty purchase and inspection.   Took about 30 minutes to do the paperwork and the actual inspection was done within minutes.  In terms of paperwork "I needed to provide" was just the vehicle booklet, vehicle registration book, and my passport.  The service rep made a copy of the vehicle registration book main page and my passport main page and then gave back the original docs....I needed to sign (a.k.a., self certify) the passport page and registration book copies.  Also signed the basic workorder.

 

I had positioned myself in the dealership lounge to watch when my car got moved from the customer arrival parking area into the maintenance/inspection area....big picture window which allowed me to see everything.  However, after spending about 3 minutes with the service representative in reading/scanning/signing the paperwork mentioned above I noticed my car was now in the maintenance bay being lifted up to look at the underside of the car/look at the battery.  The maintenance tech spent about 30 seconds with a light looking at the battery all around and then let the car back down to the floor.  I don't know if he even opened the hood to looks at the front engine area or put a diagnostic device on the OBD2 connector under the steering wheel....he could have but I just didn't see that happening.  It was a very quick inspection...get distracted for a few minutes (like reading/signing some paperwork) and you could easily miss the actual inspection.  

 

The maintenance tech drove the car back to the customer waiting parking lot.  The service rep then had me pay Bt5000.....I got a simple receipt and one page copy of the standard workorder that said lifetime battery warranty on it.   None of the paperwork presented to me to sign before, during, or after the inspection showed any technical details like number of battery charges, number of full (100%) charges, SOH, etc....and I paid particular attention during the paperwork process to look for such info.

 

The service rep and maintenance tech said everything looked fine and in three business days I will get the warranty paperwork via email.

 

 

 

This morning I stumbled across below "BYD Chonburi" website that gives a good explanation and summary of the BYD lifetime battery warranty promotion & process.  Now although I live in and have my Atto serviced at Bangkok dealerships, since owning my BYD Atto I've found the BYD Chonburi website often does a better job in explaining some BYD promotions than the main BYD Thailand website (i.e., ReverAutomotive).  See the weblink for full details....the text-based info translates well within a browser....and I included a partial quote/snapshot below.    

 

Now as for an update on my recent lifetime battery warranty signup/payment/inspection on Saturday/13 Dec I'm still awaiting the Terms and Conditions Confirmation email which is suppose to arrive within 3 business days of the inspection (Step 5 in quote/snapshot below)..  Excluding weekends that 3 business days in my case would be close of business Wednesday/17 Dec so the email is not overdue yet.   The Bangkok dealership which did my inspection said all looked good in the inspection and within 3 business days I'll get a confirmation email.  But I expect a "LOT" of BYD customers are signing-up for the battery warranty (especially here in Bangkok where around a gazillion BYD vehicles are on the roads) which might create a high backlog at the start of the program which may delay BYD from responding within their stated 3 business days goal...time will tell.   

 

 

BYD Lifetime Warranty Process per BYD Chonburi website

https://www.bydchonburi.com/blog/byd-battery-lifetime-warranty-campaign#:~:text=รถ BYD รุ่นไหนซื้อ,มีดังต่อไปนี้

 

13 hours ago, TronxII said:

OMG I was looking for this one

 

range 131km, price 1.1M. Well still they sold 2 or 3 in 2025. 

Maybe they said if Toyota can offer a pickup with under 300km range, we can do even better. 

Bro, you got confused, this is correct.

This is not a BEV (Battery EV), this pick-up is a REEV (Range Extender EV) and the world's first REEV Pickup. 

The Nissan Kicks is another very good REEV car that's been around for a while.

REEV means the Gasoline engine is just a generator in the car, it produces electricity to charge the battery. the combustion engine will not drive the car like in other Hybrid cars.

I personally think this is great from engineering standpoint, much better experience compared to PHEV. 

 

I love this design, and it has many benefits, just not perfect like BEV, still great for many applications and use.

- The engine will be always running at the optimum RPM, producing the most torque using the least gasoline. 

- The engine only needs to run when needed, you can still enjoy the silence of having your BEV in a shopping mall parking lot without polluting.

- The driving experience is same as BEV, smooth and precise.

- There is no gears or transmission, and the Fluid changes will be cheaper than a Hybrid car.

On 12/15/2025 at 7:38 PM, Sophon said:

Not a re-badged BYD, a re-badged Deepal (Changan).

Ah, okay. Thanks. 

Somehow I mixed it up 

Is the BYD Dolphin Standard Range at 449k THB still the best choice for a 22-year-old girl graduating university in March?

 

I only want her to have an EV (she currently has a Suzuki Ciaz).

3 minutes ago, JBChiangRai said:

Is the BYD Dolphin Standard Range at 449k THB still the best choice for a 22-year-old girl graduating university in March?

 

I only want her to have an EV (she currently has a Suzuki Ciaz).

If not going MG   Then the Dolphin would be the ticket @ 449k THB

3 hours ago, KhunLA said:

If not going MG   Then the Dolphin would be the ticket @ 449k THB

Her older sister has the MG4, she doesn’t like them, which is a shame because I think they’re a great car.

I have been doing some research on the safety features in new cars in Thailand, specifically the number of airbags.

 

Nearly all new cars only come with 6 airbags as standard.

 

BYD seems to be ahead of the game here, the Dolphin only has 6 airbags but the Atto 3 has 7 with the additional front centre airbag to prevent the driver and front passenger from colliding in a side impact.

 

And the BYD Seal and Sea Lion 7 have an impressive 9 airbags with two additional airbags for the rear passengers.

 

Now if I was spending 1M+ baht on a new car I would expect for it to have at least 7 airbags so that puts BYD at the top of my list.

 

I like the style of the Deepal S07 more than the BYD Sea Lion 7 (which imo looks quite boring) but unfortunately the Deepal only has 6 airbags.

 

https://www.euroncap.com/en/car-safety/the-ratings-explained/adult-occupant-protection/lateral-impact/far-side-impact/

14 minutes ago, matchar said:

I like the style of the Deepal S07 more than the BYD Sea Lion 7 (which imo looks quite boring) but unfortunately the Deepal only has 6 airbags.

 

there are many options to change the look of the byd sea lion 7 ... 

 

 

 

 

This guy has a two year old BYD Dolphin standard range which he has put 362,880km on.  Always charged on DC fast chargers. 

 

If I understood the long string of comments he took it to a BYD dealership in Rayong for a battery State of Health (SOH) check...and apparently the dealership recommended he run the battery down to to 0% for the most accurate check.  Apparently the dealership then does a charge to 100% with before and after OBD2 results based on accumulated battery charge...cost is around Bt1000 to do the check.  In the end the results showed his 2 year old Dolphin with over 360K km and having always charged using DC fast chargers still had a 86.75% SOH.   

 

See below mid Dec 2025 Facebook thread...a few key snapshots below showing him driving it down to 0%...and then the dealership results report after recharging and OBD2 results. 

 

 

https://www.facebook.com/groups/775159070331168/user/100040113976339

 

 

 

 

 

 

 

2 hours ago, Pib said:

 

This guy has a two year old BYD Dolphin standard range which he has put 362,880km on.  Always charged on DC fast chargers. 

 

If I understood the long string of comments he took it to a BYD dealership in Rayong for a battery State of Health (SOH) check...and apparently the dealership recommended he run the battery down to to 0% for the most accurate check.  Apparently the dealership then does a charge to 100% with before and after OBD2 results based on accumulated battery charge...cost is around Bt1000 to do the check.  In the end the results showed his 2 year old Dolphin with over 360K km and having always charged using DC fast chargers still had a 86.75% SOH.   

 

See below mid Dec 2025 Facebook thread...a few key snapshots below showing him driving it down to 0%...and then the dealership results report after recharging and OBD2 results. 

 

 

https://www.facebook.com/groups/775159070331168/user/100040113976339

 

 

 

 

 

 

 

That is done mileage, a taxi maybe?

5 hours ago, JBChiangRai said:

That is done mileage, a taxi maybe?

On the guy's Facebook page his profile just says he's a "Digital Content Creator"  and he has lots of pictures of his white Dolphin.  No markings on his car like a taxi would have. He's been making quite a few Facebook posts with pictures and videos of his journey of higher and higher mileage since  he got the Dolphin in Sep 2023.  Guess he just travels a lot in his line of work.

From some more research/googling/etc., on Mr Sorrawit Na who has driven his Dolphin over 360K km so far apparently he has a ongoing project to drive his Dolphin one million kilometers and he's documenting it along the way.   Like I found below Facebook post in another FB group called EV Diary which talks about Mr Sorrawit latest post/announcing he has reached 360,800Km and had a SOH check done at a BYD dealership were the battery started off at 0% SOC, charged to 100%, and that charge cycle was used to determine current SOH of over 86%.

 

Mr Sorrawit had also got other SOH checks done along the way at EV shops which used OBD2 equipment/software that couldn't really determine/read the true SOH and instead always showed 100% SOH which he knew couldn't be correct.    

 

Yea, it looks like Mr Sorrawit who is content creator has a ongoing project to document his heavy driving of his Dolphin where he charges via DC fast charger...pretty much on the road "a lot" in doing his job.

 

 

**************************************************************************************

Cut and Paste Quote from a FB group called EV Diary

EV Diary

oodpsStrenmft1h 413c8te0m5h t5h9a17fe13lrb0 4Df13:8 MPf4h9elf ·

 

From a post by Mr. Sorrawit, representative of the BYD Dolphin community, a favorite among EV enthusiasts, the "big boss" and "bug" of the EV industry: He has driven his BYD Dolphin Standard electric car 362,880 km, and the driving range remains the same; even with 0% battery remaining, he can still drive almost 20 km.

Recently, my friend had his battery checked at a BYD service center using a very basic method: draining the battery to 0%, then recharging it to 100%, and measuring the accumulated power before and after. They then used the rule of three to determine the remaining battery health. The result was a Solenoid Overhead (SOH) of 86.85%, indicating a 13.15% battery degradation.

https://www.facebook.com/share/p/16iTiFUsVD/

When averaged out, that's a 6.575% decrease per year, which seems significant. But considering the distance he drove, it's alright. Once we get his energy consumption rate, we can try to calculate the depreciation rate.

+---------------------------------------------+

At this point, I wondered what my SOH (Solid State Overhaul) rating would be if I drove 360,000 km. So, I let my incredibly smart personal assistant, Chat GPT, calculate it for me.

I prompted him, along with my solid information, as follows:

Based on the initial information.

1. The LFP Blade Battery in the BYD Dolphin Standard model has a capacity of 44.9 kWh.

2. AC charging 65.51%, DC charging 44.01%

3. The normal temperature in Thailand is between 30-38 degrees Celsius. Parking in direct sunlight is infrequent, probably around 20%.

4. The average lifetime energy consumption of the vehicle is 12 kWh/100 km.

5. Current SOH: 96%

6. Used: 335.58 cycles

7. Distance per cycle (actual usage): 312.9 km/cycle

8. Average cycle time: 2.285 days/cycle

9. Current distance: 105,010 km.

10. The vehicle has been in use for 767 days.

I'd like to know how many years and months it will take to reach 360,000 km of use, how many battery cycles will be completed, and approximately what the battery health (SOH) will be after that.

+---------------------------------------------+

The answer is...

https://static.xx.fbcdn.net/images/emoji.php/v9/t7a/1/16/31_20e3.pngWe need to drive an additional 254,990 km.

https://static.xx.fbcdn.net/images/emoji.php/v9/t99/1/16/32_20e3.pngAn additional 815.1 battery cycles are required.https://static.xx.fbcdn.net/images/emoji.php/v9/tbf/1/16/1f50b.pngTotal cycles when reaching 360,000 km = 1,150.7 cycles

https://static.xx.fbcdn.net/images/emoji.php/v9/tb8/1/16/33_20e3.pngIt would require an additional 1,864 days, or 5 years, 1 month, and 9 days, counting from the date the car was purchased. That would make it approximately 7 years and a few months.

https://static.xx.fbcdn.net/images/emoji.php/v9/td7/1/16/34_20e3.pngAssess battery health (SOH) at 360,000 km.

Rate of degradation from actual data.

- Deteriorated by 4% in 335.6 cycles.

- On average ≈ 1% per 84 cycles

- Deterioration increased by approximately 9.7% after 815 cycles.

thereforehttps://static.xx.fbcdn.net/images/emoji.php/v9/tbf/1/16/1f50b.pngSolitary Overhead (SOH) approximately ≈ 86%

https://static.xx.fbcdn.net/images/emoji.php/v9/t7c/1/16/1f9e0.pngPractical Analysis

- SOH ~86% → Still considered very good.

- The range per charge will decrease by approximately 10–12%.

- Still suitable for daily use / comfortable for long journeys.

- For LFP, it is considered that it has not yet entered the "battery fatigue" zone.

+-------------------------------------------+

It's surprising that the results are almost exactly the same as yours, Sorrawit. This shows that Dudu is quite accurate! (I got the SOH data from Dudu.)

Finally, I'd like to thank Sorrawit My iDol for sharing valuable information that can silence all the anti-EVs worldwide. I haven't seen anyone achieve this level of driving in two years, and I hope he can reach one million kilometers in the next four years. I'd love to see the first one – a BYD Dolphin driven by a Thai person.

 

*************************************************

 

 

Now I can barely use Facebook but hopefully below weblink will take you to Mr Sorrawit's group posts he been making on BYD Thailand Club FB group.   Has quite a few post/pictures/videos of this Dolphin use, care and feeding, maintenance over the past two years.    He below past the the 160K km warranty early on in his driving.

 

https://www.facebook.com/groups/775159070331168/user/100040113976339

On 12/17/2025 at 2:22 PM, JBChiangRai said:

Is the BYD Dolphin Standard Range at 449k THB still the best choice for a 22-year-old girl graduating university in March?

 

I only want her to have an EV (she currently has a Suzuki Ciaz).

 

Go ahead and get what she wants  -  a BYD Dolphin.   

 

A car she can drive and drive for a many, many kilometers.....but tell her to keep the annual mileage under Bt50,000km so the battery/drive motor lifetime warranty will not be voided.   

22 minutes ago, Pib said:

 

Go ahead and get what she wants  -  a BYD Dolphin.   

 

A car she can drive and drive for a many, many kilometers.....but tell her to keep the annual mileage under Bt50,000km so the battery/drive motor lifetime warranty will not be voided.   

Took us 3 yrs to break 50k kms.  Although we don't have a daily commute.  Even my almost daily commute for a walk at the park or surf is completely unnecessary.  If I did the longest loop (15 kms) everyday with car, would still only be 5500 kms a year.

 

Whoa, with that, puts in perspective how much we are O&A exploring, locally & overnight.  Apparent nothing compared to some folks.

 

He drove, 362.8k kms, so, on average 450 kms a day, 810 days.   Holy Crap 

We ordered a BYD Dolphin Standard Range in the new white colour.  Delivery possibly in January. She won't do anything like 50,000km per year.

9 hours ago, KhunLA said:

Took us 3 yrs to break 50k kms.  Although we don't have a daily commute.  Even my almost daily commute for a walk at the park or surf is completely unnecessary.  If I did the longest loop (15 kms) everyday with car, would still only be 5500 kms a year.

 

Whoa, with that, puts in perspective how much we are O&A exploring, locally & overnight.  Apparent nothing compared to some folks.

 

He drove, 362.8k kms, so, on average 450 kms a day, 810 days.   Holy Crap 

 

Yea...this guy is racking-up some serious mileage....but it's all part of his content making which earns him money.  

 

I'm just a few days short of having my 2023  Atto for 2 yrs, 2 months...and after today's 283km site seeing trip the car has 57,238km under its belt which works out to around 2,200km per month or 73km per day.   

 

But a very significant amount of the total mileage is due to a once or twice per week trip to the mother-in-law's (MIL) house which racks-up around 125km roundtrip per trip.   Those MIL trips account for approx 21,000km of the over 57,000km my Atto has accumulated.    I expect a lot of us have a certain trip we accomplish on a regular basis which racks-up a lot of mileage.

 

32 minutes ago, Pib said:

I expect a lot of us have a certain trip we accomplish on a regular basis which racks-up a lot of mileage

 

Yep, to the bar supermarket.

On 12/9/2025 at 6:41 PM, Pib said:

Yea...I'd pay another Bt200K for the additional battery size, range, and other stuff the 7X Long Range offers over the 7X Standard.   Do I really need the extra range?...No, not really but I want it!

 

And in China the 2026 7X has been released with some upgrades over the 2025 7X sold in Thailand.....upgrades are a slightly larger battery, extra range, 900V vs 800V system, even faster DC charging (not that the 2025 model with its 420KWH charge rate is not fast enough already) more drive motor power, Infotainment system upgrade, etc.   When and if its destined  for Thailand and at what price if it arrives I couldn't say.

 

And maybe a refreshed/2026 BYD Sealion 7 will be enough to lure me away from the Zeekr 7X.....and once again when will the 2026 Sealion 7 arrive Thailand I couldn't say (probably late 2026 just before the next end of year Motor Expo)....hopefully it will have a larger battery and also have the Blade "Ver 2" battery vs current day Ver 1.

 

 

I have test driven the standard 7X and the AWD. For me the ride is greatly improved with the air suspension and of course it’s much quicker. The seats are really nice, far superior to the Sealion 7 seats. The ride in the rear seats is much improved in the AWD. The road noise is still higher than I would like, even more than our 2019 E Class and that’s not exactly quite. I will look again when the Updated model comes here.

A spinoff the Facebook post relating to the BYD Dolphin with over 360,000Km and still counting.  The Facebook link and quote below.

 

https://www.facebook.com/TheEVDiary/posts/pfbid02dU6tngdW8gGJdEDEbcMjEkwPUizWfnihqdF7x4qnarZHXDZAGrkf4YZDkoJ2ZSFcl

EV Diary

andSrsthetthendp3c908l13mf6 Miin 6cfr75it7c 4and1m98band:461Pin603Dinafand0 h1 ·

 

::: In-depth analysis of battery degradation due to usage :::

Many people don't understand what "battery degradation due to usage" means, and therefore don't understand why car companies don't guarantee batteries that degrade with use, and then they criticize the terms and conditions as dishonest.

This condition is stipulated in all car brands, even if it's not explicitly stated in the terms and conditions. This is because batteries inevitably degrade over time; it's unavoidable. The more you use them, the more they deteriorate, whether it's car batteries, mobile phone batteries, laptop batteries, or UPS batteries. No battery can maintain its charge at 100% the same level as the first day of use.

 

This gradual degradation has a rate that varies over time, known as battery degradation. This is defined as the decrease in a battery's ability to store energy over time and with the number of charge cycles. For example, a new battery (100% charge) after 5-8 years may drop to 85-90%, and after even longer use, it may drop to 70-80%.

 

The rate of battery degradation determines whether a battery is functioning normally or is faulty. This is determined by how much the battery degrades each year. If it follows this rate, it's considered normal wear and tear. However, if it degrades beyond this rate, there's a possibility the battery is damaged.

 

Let's say the battery degradation rate is 2% per year. If we check it in the second year and it's still 2% degraded, it doesn't meet the criteria for replacement. However, this doesn't mean that if it's over 4%, the battery is automatically considered faulty. We need to monitor the rate of degradation in subsequent years to see if it continues abnormally. If it's abnormal, it will likely degrade rapidly rather than at a steady rate.

 

And the rate of battery degradation varies depending on the type.

 

LFP blade batteries have a degradation rate of approximately 1-3% in the first year, or may even be negligible. In subsequent years, the degradation is around 1-2%, sometimes even lower than 1%.

 

However, with NMC batteries, in the first year they will experience what is called an initial drop or initial capacity loss, where the battery will degrade more than LFP batteries, by 3-8%. After that, it will degrade by 1.5-3% per year.

 

Another important factor is the number of battery charging cycles, which directly affects battery degradation.

 

First, we need to understand battery cycles. Some people mistakenly believe that one charge equals one cycle, which is "wrong."

The correct definition is: 1 battery cycle = total energy consumption equal to 100% of the battery capacity.

The correct way to count cycles is to count the total discharge rate (Discharge) until it reaches 100%.

For example,

- Usage from 100% → 0% = 1 Cycle

- Usage reduced from 100% → 50% = 0.5 Cycles

- Usage changed from 80% → 30% = 0.5 Cycles

 

I will give you an example of battery usage and charging to help everyone understand the concept of battery cycles better, as follows:

Example 1

- Monday: 100% used → 70% (30% remaining)

- Tuesday: 70% used → 40% (30% already used)

- Wednesday: 40% used → 10% (30% already used)

- Total = 90% ≈ 0.9 Cycles, meaning it's not yet completed 1 cycle.

Example 2

- Use 60% → 40% (20%)

- Charge it back to 60%.

- Use 60% → 40% (20%)

- Do this 5 times = 20% × 5 = 100% → 1 Cycle

 

- As you can see in this example, frequent charging doesn't increase the cycle time faster. What increases the cycle time is the "total energy used."

 

Batteries also have a lifespan based on their cycle count.

 

The cycle count is obtained by repeatedly charging the battery from 0 to 100% until its maximum capacity is reduced to 80% of its original capacity (State of Health: SOH = 80%). This determines the cycle count for that type of battery.

 

This means that even if you use a battery until it reaches its specified cycle count, it doesn't mean it's completely unusable. You can still use it indefinitely, but the degradation rate will be much faster than before, until the battery health reaches around 70-60%. At that point, the vehicle will no longer be able to use that battery effectively because the driving range will decrease significantly, the BMS will start limiting power, power will drop, acceleration will be poor, and charging will take much longer.

 

Eventually, the user will become annoyed and have to retire the vehicle or replace the battery.

 

Once we understand the battery cycle, it's also important to understand that different types of batteries have different cycle times.

LFP has a cycle life of approximately 3,000–5,000 cycles, while NMC has a cycle life of approximately 1,500–2,500 cycles.

 

Therefore, if we use a battery until it reaches the cycle lifespan of each battery type, and the battery's SOH (Surface Open Heat) is still around 80%, it indicates that the battery has deteriorated due to usage.

 

Batteries degrade rapidly after completing a cycle of use, which is a natural process of wear and tear. This happens even if the battery has 70% Solenoid Overload (SOH), as it's a characteristic of battery life.

 

Regarding battery cycles, if the BYD Dolphin Std has a battery capacity of 50.25 kWh and an energy consumption rate of 12 kWh/100 km, and the vehicle is driven 50,000 km per year, the battery will only be used 120 cycles per year. Therefore, it will take 25 years to reach 3,000 cycles and 42 years to reach 5,000 cycles.

 

If calculated in terms of distance, 3,000 cycles would cover 1.26 million km, and 5,000 cycles would cover 2.09 million km.

But that's the theory. In real life, batteries are affected by other factors that cause degradation, such as heat, internal impact on battery cells, charging methods, and environmental conditions. Therefore, a battery may only have a lifespan of 12-15 years.

 

Therefore, before the 8-10 year warranty period expires, if the battery's SOH (Situation Overhead) falls below 70%, it will be considered defective, because it's impossible for a normal battery to have an SOH below 70% in such a short time.

 

And let me reiterate, every brand has this condition. If they were to replace the battery, even due to normal wear and tear, that car would practically be immortal. The company would suffer huge losses, and realistically, it's impossible anyway. By the time the Soho (Saturation Overheating) level drops below 70% due to normal wear and tear, the battery production line and that car model would likely have ceased operations, and the car itself would probably be scrapped.

::: Digging into the meaning of battery degradation :::

Many people don’t understand what “battery deteriorated according to usage” is. That’s why they don’t understand why car companies don’t guarantee battery that deteriorates according to usage. And then they say that the conditions are dishonest.

 

This condition is defined by all car brands. Even though it is not directly stated in the condition, it is because the battery has to be deteriorated. It is inevitable. The more you use it, the more it gets deteriorated. Whether it is a battery, car, mobile phone, laptop, UPS without battery, whatever is used continuously, it can store 100% electricity like the first day.

 

A battery degradation is defined as the battery power storage capacity that decreases over time and the number of charging cycles. e.g. 100% new battery, used for 5–8 years → 85–90% remains. Long time used → 70–80% remains.

Which battery deterioration rate determines whether the battery is normal or bad, depending on how much the battery deteriorates each year. If it is according to this deterioration rate, it is considered to deteriorate according to usage, but if it exceeds this, there is a possibility that the battery will die.

 

Supposedly that in one year the battery degradation rate is 2%, we went to check for the 2nd year and it turns out that 2% degradation is not eligible for battery replacement. But it does not mean that if the battery exceeds 4%, the battery will be dead. We have to see in the next year whether the decrease rate is abnormal. If it is abnormal, it will reduce rapidly rather than deteriorating to a stable rate.

 

And the rate of battery degradation of each type is different.

LFP blade battery. The corrosion rate in the first year is about 1-3%, or probably unmeasurable at all. And the next year, about 1-2%, sometimes less than 1%

 

But if it is an NMC battery in the first year, there will be a symptom called Initial drop or Initial Capacity Loss (initial deterioration), where the battery will deteriorate more than the LFP with 3-8% deterioration. After that, it will deteriorate 1.5-3% per year.

 

And another value is the number of Cycles (rounds) of battery charging, which directly affects battery degradation.

But first, we need to understand the cycle of battery first. Some people understand that charging 1 time is equal to 1 Cycle. Which is "wrong".

 

The correct one is 1 Cycle of battery = Total energy consumption equals 100% of battery capacity 1

The correct way to calculate cycle. It must be calculated from the sum of discharge (Discharge) = 100%

Examples, such as

- Use from 100% → 0% = 1 Cycle

- Use from 100% → 50% = 0.5 Cycle

- Use from 80% → 30% = 0.5 Cycle

I will give you an example of battery usage and charging situation so that everyone can understand Cycle better.

The 1st sample

- Monday, spend 100% → 70% (spend 30%)

- Tuesday spend 70% → 40% (spend 30%)

- Wednesday spend 40% → 10% (spend 30%)

- Total = 90% ยัง 0.9 Cycle means not complete 1 Cycle.

The 2nd sample

- Spend 60% → 40% (20%)

- charging back to 60%

- Spend 60% → 40% (20%)

- Do this 5 times = 20% × 5 = 100% → 1 Cycle

 

- In this example, charging often doesn't make the Cycle increase faster, but what makes the Cycle increase is "combined energy".

 

Which battery will live according to Cycle.

By Cycle, it is obtained from a charge test from 0 → 100%. Repeated repeatedly until the battery has a maximum capacity of 80% from the original point of the battery (State of Health: SOH = 80%), it will get a cycle of that kind of battery.

 

And that means that if the battery is used up to the specified cycle, it doesn't mean that the battery will not be used at all. It can continue to be used. But the rate of deterioration will be much faster than before. Until the battery health is about 70-60%, the car will not start to use it. Because the distance will be reduced significantly. BMS will start to limit the power, falling, and cannot accelerate. Charging will take a lot longer that the user will be annoyed and have to suspend the car or replace it. New battery finally

 

When we understand the cycle of a battery, we must also understand that each type of battery has an unequal cycle.

LFP has Cycle about 3,000-5,000 cycles. NMC has Cycle about 1,500–2,500 cycles.

 

So, if we use battery up to the cycle that is the age of each type and the SOH of battery is still around 80%, then it means that battery is deteriorating according to usage.

 

Batteries degrade rapidly after use up to Cycle, which is degradation according to usage too, although the battery remains 70% SOH, because it is the nature of the battery.

 

Based on Cycle Battery. If BYD Dolphin Std battery capacity 50.25 kWh, the energy consumption rate is 12 kWh/100 km. If you use a car for 50,000 km per year. Battery will only be used 120 cycles/year. So, it will take 25 years to reach 3,000 Cycles and 42 years to reach 5,000 cycle.

 

If you think it's a distance of 3,000 Cycles, you can drive 1.26 million km. 5,000 cycle will drive 2.09 million km.

But that's a theory. In real life, batteries will be affected by other deteriorating things like heat, impact of vibrations inside the battery cell, the nature of charging and environment. It will be found that the battery may last only 12-15 years.

 

Therefore, before the 8-10 years warranty period, if the SOH battery is less than 70%, it will be considered a dead battery. Because it is not possible that a normal battery will have SOH below 70% in that period of time.

 

And I repeat it again. All brands have this condition. We rape and replace them. Even from the degradation of normal use, it's as if the car is almost immortal. The company has made a huge loss. And in fact, it's not possible. Because SOH is below 70% from normal degradation, the battery production line and the car model will be gone first. And the car will be a wreck.

Another one sprouting from the BYD Dolphin with over 360,000Km and counting....see FB link, quote, "and nice graphic" below.

 

https://www.facebook.com/story.php?story_fbid=122155379942667526&id=61570025806121&post_id=61570025806121_122155379942667526#

 

EV Diary

ooSdsrpntel291e  88l34l0M ehmA1301ut6u3bucm511:87aurDc55tei 2 ·

 

Following up on yesterday's post about "Battery Degradation Over Time".

https://www.facebook.com/share/p/14PiPosbQhf/

 

So, I started wondering how much longer my car can be driven before the battery reaches 3,000-5,000 cycles of use.

Based on my current vehicle information, here it is:

BYD Dolphin Standard car

Battery: LFP Blade Battery, 44.9 kWh capacity.

Average fuel consumption: 12 kWh / 100 km

Current SOH: 96%

The battery has been charged 335.58 cycles.

AC charging: 65.51% and DC charging: 44.01%

I've driven 105,010 km.

For a period of 767 days.

Operating environment: 30–38°C (parked in sunlight ~20%)

 

And I had Chat GPT calculate it for me, and this is the result.

Distance per cycle = 312.9 km

One cycle = 2.285 days

After 3,000 battery cycles, it will have another 833,700 km of use and another 16 years and 8 months.

After 4,000 battery cycles, it will have another 1.15 million km of use and another 22 years and 11 months.

After 5,000 battery cycles, it will have another 1.46 million km of use and another 29 years and 2 months.

After 6,000 battery cycles, it will have another 1.88 million km of use and a remaining lifespan of 37 years and 6 months (in this case, the battery's Soholl (SOH) will be at 70%).

 

Chat GPT also analyzes your battery as follows:

Analyze current SOH (Situation Overhead) (Very Important)

• Used: 335.6 cycles → Battery is "stronger than average".

• Soil Overhead (SOH) is still 96%.

Rate of deterioration:

• ~4% per ~336 cycles

• Approximately 1% per 84 cycles

This is considered slower than the average LFP, meaning: Your usage habits are unintentionally very "battery-efficient".

 

It also comes with instructions on how to use the car battery.

Tips to extend lifespan to near 6,000 cycles.

Continue using AC as the primary power source.

DC power is fine, no need to worry, but avoid charging rapidly.

No need to fear charging to 100% (LFP likes it).

Avoid parking in direct sunlight for many hours.

He also said that I've done almost everything right. I'll probably keep using this car for a long time because I wouldn't get a good price if I sold it, and I also want to test how long an electric car can actually last.

 

And one quick comment about the battery lifespan estimates talked in the two above posts, they are purely talking "battery degradation" estimated lifetime "assuming"  one or more of the many battery cells comprising the pack doesn't fail (i.e., short, open-up, starting leaking electrolyte, etc )....like my Atto Extended Range has 126 blade battery cells comprising its battery pack......failure of "electronics" in the battery pack like BMS mother or daughter boards/relays/etc.,......failure of a battery cooling plate/lines within the battery pack which begin leaking, etc.    An EV battery pack is made-up of much more that just the individual battery "cells"....numerous things can cause an EV battery pack to fail.

10 hours ago, JAS21 said:

I have test driven the standard 7X and the AWD. For me the ride is greatly improved with the air suspension and of course it’s much quicker. The seats are really nice, far superior to the Sealion 7 seats. The ride in the rear seats is much improved in the AWD. The road noise is still higher than I would like, even more than our 2019 E Class and that’s not exactly quite. I will look again when the Updated model comes here.

Thanks for the crossfeed.   The updated model (i.e., the 2026 if/when it arrives Thailand) may be a little quieter due to double pane acoustic glass windows to make the cabin quieter (not to imply it's too loud), do an upgrade from an 800V architecture to 900V for even faster charging but it's already super fast at 800V and it's special battery, more powerful motors, a more powerful infotainment system CPU, slightly larger battery, slightly more range, minor cosmetic changes, etc.  

 

Below AI Deep Dive link gives more info between the 2025/current model and what's planned for the 2026 model "in China"....when/if the upgraded model will arrive Thailand hasn't been announced....wouldn't surprise me if it might not arrive until 2027.

AI Deep Dive

https://www.google.com/search?q=Zeeker+7X+2025+and+2026+differences&rlz=1C1CHBF_enTH879TH879&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIHCAEQIRigATIHCAIQIRigATIHCAMQIRiPAtIBCTEzOTczajBqOagCBbACAfEFZJMgo3jRUqY&sourceid=chrome&ie=UTF-8&udm=50&fbs=AIIjpHxU7SXXniUZfeShr2fp4giZjSkgYzz5-5RrRWAIniWd7tzPwkE1KJWcRvaH01D-XIX002E0qNXsgfZ6fffiMQMi5-_D5b5oEjBGcsLP5FUOaTmHJCbsutOK5h5pkfbx4XcOp0N4LebE0L3NWnBmBBnPnLf3NwHbq4gNtbnjzzY0Znrm1qyVaX-NpgxyzK81jEBez1oAMjebtBQ19TSf-2YnI98H5A&ved=2ahUKEwjNzuvqktGRAxVKxTgGHSITKjkQ0NsOegQIAxAB&aep=10&ntc=1&mstk=AUtExfAvRwo_0bi66Vb7zfz5m4Nj9HeaDMIVOohk2QTi9HyTvjB2qhLs0n7G5wM94DJsXVz3F9QovhpqlvkNgSjsrSXxxvQLmQVULakEyUilRW2Qyj8cmhNFtp1NfURnS7wJ_kvd8FjTOtMmSQdhKUU34_wZk8SNPXvitcWmv4XCgsdEnCfqkpzrhH0kyRG05zoFCRlees89Ep9j87f1rSjIreruxEJzQfW_X6C8eD2r9qhs-WisQrT55Ok6Nw&csuir=1