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I have an old 24 V System (12 x 2V) 850 Ah @ 20, however have noticed that the battery bank seems to need a change more often. Today, while charging, I noticed that one battery was 80C while all the others were around 40C. When I opened the vent cap, smoke was coming out. Not sure what’s going...

.... but would like to know options for building a 24v - 1200 Ah LiFePO4 battery bank or pointed to a thread re this?

Will be installing 6 - 400 watt solar panels in 2 strings of 3 with each string outputting 124V and 10A, then paralleled to be 124V and 20A. This is based on Voc and Isc of the panels and no temperature correction. It will be about 200 feet from the panels to the Victron Energy 250/100 MPPT...

I have coming a Victron Energy SmartSolar MPPT 250/100 SCC. I have an existing string of 3 - 235 Watt Solar Panels in series with a Voc of say 70 volts and an Isc of 10 Amps . In the future, I plan on buying 6 - 400 Watt panels with 2 strings of 3 resulting in a Voc of 120 Volts and Isc of 10...

I was recently pointed to the "FAQ Section" and was impressed with the organized information I found there. I don’t know why I didn’t get there before! However, I couldn’t find a specific thread on how to do a capacity test & why to do a capacity test? I can see the point to do it if you are...

There is so much knowledge here, but it is spread all over the threads and I know it is impossible to keep them sanitized to an issue. Could we/should we start a Wiki to try and organize all the relevant information from these threads. I think it would be great, especially for us new guys! I...

I have the option of wiring 6 - 400 watt panels one of two ways; either 2 parallel strings of 3 panels in series OR 3 parallel strings of 2 panels in series. I know each will produce a different voltage amperage configuration and the Lower amp option allows smaller gauge wire. I will get the...

I have the opportunity to change the battery bank from 24 V to 48 V. Can anyone provide a link that shows the pros and cons of one voltage over the other. I understand the higher voltage equals lower amperage equals cheaper wire. I also believe that I would need 1/2 the amp hour battery bank...

We are upgrading our off grid System. Re Batteries, currently have 12 - 2v, 850 Ah old lead acid and want to go to 24v - 1000Ah LiFePO4. I am intrigued by building my own Battery Bank but using and getting 40 of the 3.2 - 200 Ah in a 8s5p configuration versus 5 - 24v - 200 Ah fully assembled...

Greetings! This is my first post to this Forum. We currently have an old 24v 850Ah lead acid battery bank. I am intrigued by Lithium when I need to replace the battery bank and believe I have sufficient skills to build a 24v 1000 Ah replacement along with an increased PV Array. When snooping...