Pink7

Its good to have solution who can save the electronic but in my case I was mainly thinking about safety for my family since i have my inverters and batteries inside home. Pink

I was looking into this: DAYTECH SM12 9v claim 1 year battery life and DAYTECH SM06TA 3V lithium battery 17335. Claim 10 year battery life Pink

Regarding danger of fire on solar/battery equipment: Any of you mounted smoke detectors to early detect any smoke? Pink?

By electric bill use to be from 38 bath to 1xx bath a month. So i use 0 to 5 units per month from grid. Pink

Hello This was taken care of asap as soon I discovered it.. Now also with temp monitor on each breaker. Pink

Looks great. Congrats with your new panels and batteries. Pink

Thanks for your input...I was wondering exact the same..if this just will continue. As for now the plan to get this temporary improved and working/running. Then next step I would make a plan for improved setup who also should be ready for adding more batteries in future. When I calculated and built my setup I was quite sure I would not need to expand it in the future but after experience the hot season with less optimal sun direction and school vacation with kid home and run his AC, I'm more open for the idea to expand capacity. Pink

Thanks Crossy Pink

Update: Temp coming down again.. after tightening the 2 screws. Learning something everyday..i will keep my eyes on this, I even consider placing 1 of 2 temp monitors from each BMS on each battery breaker. Pink

Checked my battery breakers and found that the breaker i cleaned up yesterday was normal temp but the other one was very hot and so also the wire from breaker to battery. I was able to tighten the screws some and hope that will fix it. Pink

Nice progress. Waiting to see more on your battery building.. Quite a upgrade you are on. Pink

I just thought that would be the best option to parallel without connect with breakers. Please suggest options for parallel connection. Edit: I also have option to parallel between breakers and BMS. Pink

My plan now is to connect the battery cables between the 2 inverters for parallel the batteries. Pink

Correction: distance between battery wires down from the 2 inverters are 55cm. ( red to red and black to black) Pink

I had a "almost" issue today.. I closed down the 2 bms with the pushbuttons for the bms but when i checked with voltmeter i noticed it was still power...then i see the connector to the bms for the power button had slided out so it had not power off as I expected. There is 70-80 cm between the battery cables i want to parallel, and they are short ( inverter to breaker), so i guess i must use cable between them not just the copper bus bar. With quality thick copper battery connectors i might could connect 3 of the them on a bolt with nut? ( 1 to inverter, 1 to breaker, 1 to parallel then same in the other end of parallel cable) Pink

Thanks for the reminder. My system is up and running again now without the parallel connectors who i will find another solution for. I will fully charge my batteries before parallel them again. Pink

Yes that could be the route to go now. Connected between breaker and inverter. Do you see any problem to run the setup some days without parallel connection between the batteries? Pink

Lug and wire look as when it was new. Wire is 35mm2 but expand when remove the protection around and not easy to handle at all. Pink

I can confirm the coloring is just outside and im able to sand off a good part of it. I have just removed my parallel connection between the breakers and will find another way for doing this. I guess i can still use the the setup temporary without parallel batteries? Pink

Looks good. I use a heavy duty type lug for high current. see photo

Currently my parallel connection is after on/off breaker and before inverter. Is there any problem to parallel the batteries before breaker on battery side? Pink

Yes look so. Maybe i should dessable the wires for parallel for now. And then look for other way to parallel? Pink

Thanks for the reply. I use 2 connector in same hole. one from inverter and 1 for parallel. Here is a photo from underside where the 2 connectors connected. Pink

I just noticed Brown spots on my one battery breakers front and under on the one pole. Any ideas what is this? Should i still use it? replace? It have never switched yet Pink

I used THB 300K. You can see some more details here Pink