Muhendis

A lead acid battery will suffer from sulfation if it is only partially charged. Lead carbon batteries, on the other hand, will not suffer from sulfation to anything like the same extent. Charge cycles for lead carbon are the same as for lead acid ie there is a constant current phase followed by a constant voltage phase more commonly referred to as CC/CV CC mode pumps current into the battery and monitors the battery voltage. When a certain voltage is achieved, usually 90%, the charger will switch to CV (sometimes referred to as the absorption stage) mode and monitor current flowing into the battery. When this current reaches a very low value charging is complete and stops. This process can be ridiculously fast with lead carbon batteries.

Firstly the lead carbon batteries will charge as fast as your solar installation can manage. My somewhat knackered solar panels feed up to 45 Amps into the battery which is 750Ah and the battery is often full before lunch. Speed of charge depends what other machines I have running. I do woodwork. My charge controllers know what state of charge the batteries are at and they modify the CC/CV profile accordingly. When the batteries are full charging ceases. There is no effect on longevity although the first initial charge cycle needs to be a bit gentle and kept below 60 Amps per battery. After that they will take everything you can throw at them. The thing about lead carbon batteries is that they act like a capacitor and so don't have the charge limitations of lead acid batteries. This does not make sense to me. Once the batteries are full they no longer require charging so whatever is available from your solar panels can be used for whatever you want this includes trickle charging if necessary. Why do you think you would need power from the grid? As long as you have a decent bit of sunshine on your panels, resorting to the grid shouldn't come into it. Your batteries are for when the sun don't shine which, surprisingly, happens for almost 12 hours every day.

Yeah. Not just victron but just about every battery company is climbing onto that particular bandwagon. When I got my batteries last year, there were very few choices but now you can find pages of companies advertising them. At 77kg each, mine are heavy but since the intention is to leave them in situ I have no problem with that. The same as older style lead acids, I still target 30% DoD which will give them an estimated 11+ year life. Given the choice I went for the Gel type batteries. They have a design life of 20 years whereas AGM's and other VRLA types only have 15 years. What is meant by design life is standby use not daily cycling. Are they easy to DIY? Absolutely. If you can change a car battery you can do your own Lead carbon installation.

LiFePO4's are not the only storage solution. Have a look at lead carbon batteries. They have similar lifespan to LiFePO4 They are significantly cheaper. They are more robust and don't need any special electronics to keep them safe. The following might help to understand better how they work. https://www.kijo-battery.com/lead-carbon-battery.html#:~:text=Lead-carbon battery is a,advantages of lead-acid batteries. I have 12 x 250Ah gel type lead carbon batteries and I am very pleased with them. I got mine from a Chinese company not the one in the link

Sensors do wear out with time but we are talking centuries rather than weeks. Insects don't really get caught in them but they can, as Onetimewoodwoker has said, trigger the sensor and they can block the sensor if they can get into the electronics. Further reading on how things work is here: https://robocraze.com/blogs/post/pir-sensor-working-principle#:~:text=It utilizes a special type,and triggers the sensor's alarm. Regarding effect of mothballs on electronics. Naphthalene (mothballs) is a hydrocarbon and has no effect on electronic components or wires but as Onetimewoodwoker has said, they are big and unlikely to fit into the sensor casing. I like the idea of ant powder. That's now on my todo list.

Be very careful when handling the plastic detraction cover, that's the white cover over the front of the sensor. It is very brittle and is made more so if in direct sunlight. I have four of these things around my house and they all, except one, stopped working after a short time.

I have had similar issues and, without switching anything off-on, simply cleared my browser history. That works really well. Apparently there can be conflicts created by stored URL's which can slow down and even prevent access to some sites.

I wondered about this so had a quick look at Wiki and here is the result:- James Prescott Joule FRS FRSE (/dʒuːl/;[1][2][a] 24 December 1818 – 11 October 1889) was an English physicist, mathematician and brewer, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work. This led to the law of conservation of energy, which in turn led to the development of the first law of thermodynamics. The SI derived unit of energy, the joule, is named after him. He worked with Lord Kelvin to develop an absolute thermodynamic temperature scale, which came to be called the Kelvin scale. Joule also made observations of magnetostriction, and he found the relationship between the current through a resistor and the heat dissipated, which is also called Joule's first law. His experiments about energy transformations were first published in 1843. Man after my own heart. Being as how he was borme not too far from Manchester, I wonder is our learnéd author might have met him.......

Do you pay? It's free.

It's called "cooking the books".

I guess this is panel to panel connections. Warranty?

Pink7 mentioned the two connectors were melted. My understanding of melted connectors, limited though it is, leads me to think it may have got a bit hot. Resistive connections do things like that. Sometimes they fuse and sometimes they don't. In the case of a connector it could be the crimp not firm enough. I believe this is a fairly recent instal so I would have a look at the calibration certificate of the crimper Here are a couple of pictures of a resistive connection within a solar panel. First the rear view then the front

Translation required

I cannot for the life of me understand how a "buffer zone" will fix anything. Surely a line of concrete posts stuck in the ground to mark the boundary would do. Here is part of the problem. Someone's brain was not working so well to agree to this upgrade. It would be seen as a big green light to Sor Kor Por farmers to grab as much extra as they could get when no-ones looking.

Not entirely.

I think you need a new calculator. Try 33 metres

It's cheap enough so why not? It will possibly prolong the life of the 'O' ring although, with the exception of the one mentioned, mine have been good for the last 11 years without silicone grease.

When you mate (nice wording) those MC4 connectors, be sure to fully push them completely together. I had one fail due to that. The 'O' ring inside was letting moisture in and as a result, the copper wire went a bit green before it parted. It felt like it was well assembled and it conducted electricery just fine, but it needed that extra shove to complete the seal.

It is possible to produce charcoal without making smoke. The gas and smoke produced when heating the wood needs to be directed back into the combustion chamber. It's not difficult to do but I guess the people responsible can't be bothered.

Who said so. Maybe there's more to this "agreed price" like additional terms and conditions conveniently not mentioned.

Curiosity got me on this one. I had a look at what the current monthly pay is for police officers. It's not so bad after the first five years but it's never enough to afford a Ferrari that's for sure. https://www.salaryexplorer.com/average-salary-wage-comparison-thailand-police-officer-c215j504 In addition to this there is free health care for a police officers family and also free education for the children. I'm not sure about any other perks

Don't be upset by my terminology. It just so happens I am very familiar with degenerative bone disease having seen many over the years. My comments were aimed at the misdirection in yesterdays and todays posts regarding Thaksin and his future hospital operation to "cure" him. You have my deepest sympathies. I fully understand your predicament.

A committee is involved. That'l whittle away some of the funding.

Well yes they do make a fair few bob out of it but it tends to go into a central fund for later dispersal. Rather like a christmas fund.

Poor old b'ger's got arthritis which is dressed up to look life threatening. Quote from yesterday. "degenerative bone disease" and "waiting for an operation at the police hospital to cure it". Nonsense and use of long words to feed the ignorant masses.