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I have 16x 280ah REPT cells wired 8S2P with 2x 200a JK BMS, one on each 8S but they are constantly throwing up wrong data. For instance, I'm getting Battery Fully Charged message and it's showing 100% when the voltage is showing 27.4v. I also know its not fully charged because this morning the...

I purchased 4 cells from china, and after charging one has seriously swollen up. It's voltage is 3.33v. How can I dispose of it? Or how could I bring down the voltage of one single cell to drain the battery? I'm worried it's going to explode!

I have 2x 8S 24v 280ah LifePO4 battery packs which I want to combine to create 1x 24v pack. I have 2 separate BMS which are 24v 8S. What's the best way to connect these together? I don't have a 16S BMS so should I run two separate BMS 8S and connect in parallel? Also, would I need to top...

I bought a battery box 'kit' from Alibaba which came with a 200a BMS, and these 25mm2 thick wires and an even thicker positive wire. (Photos attached). I've also bought a new JK BMS but it wont come with these wires. So my first question is, where can I buy these thick wires, with two...

I have a 200a JK BMS running on my 24v LifePO4 battery bank, but it's constantly giving me a Charge Over Current protection warning and blocking the current from the solar input. (Photo attached). In the settings the BMS over voltage is set at 3.6v. Also im only using a 40a charge controller so...

In the middle of the night my inverter started beeping loudly like it does when the batteries are dead, the batteries just emptied out of nowhere. There was a small load of about 50w but nowhere near enough to drain a 280ah battery at 60%. The batteries were 12.8v at 10pm, and then 10.8v when...

I've just received some LifePO4 cells (280ah REPT) and put them into a 12v battery box with a JK 200a BMS. All came supplied just connect and go. The batteries were all balanced when they arrived at 3.29v so I connected them all up and started using it. I installed the app and set the...

It's 11AM, sunny day and I've just looked at my solar charge controller, and it was showing 120w and the battery was showing 99%. Then I looked at the batteries and they were showing 24.2v on the inverter. I then added a load and the solar shot upto 780w. Is my charge controller faulty? Why...

I need a new Charge Controller, the 40A one I have now is not big enough for my 2000w panels and 24v bank. I've been looking at hybrid controllers, but I'm hoping for some recommendations please! I've seen one which is 80a max 450V - but that has only caused me to ask more questions. I need...

I've just purchased some new panels 4x500w and when connecting them to my CC I noticed I was using 6mm wires, but the wires coming from the panels themselves are only 4mm. Would that be a problem going from 4mm wire into 6mm? Theres about 2 metres of wire from the panels to the CC. Or should i...

I have 5x lead acid 12v 245ah batteries, each of which have different capacities. Some are older than others, and some have been used more. I did a discharge test on each individually and they are all different: B1: 1285wh B2: 1214wh B3: 715wh B4: 645wh B5: 645wh My question is, can I put 4...

I've seen loads of systems set on 24/48V but is 48v the biggest voltage of a battery bank? Could I build a 96v bank? Or 192v?

I'm buying 4x 550w solar panels this week and I need some help figuring out the wiring size I should use and also which branch connectors would be best for them. I can only wire the panels in parallel due to some shading, so it would be the (Vmp) 41.96V x (Imp) 13.11A = 52.44A Do I need to...

What would be the best way to charge some excess lead acid batteries from my solar? I have a lifepo4 battery bank which is often full, so I want to divert some power to a second battery bank of lead acid batteries I have spare. I'm currently using a battery charger plugged into my inverter...

I currently have 900w of solar going through a 40a CC into my 24v battery bank. But during these winter months I get a maximum of 350w, 8a from the panels at the highest point of the day. This works out at maximum 2500w per day/1000w on overcast days. I was thinking If i purchase two more of...

I currently have an Epever Triton 30a charge controller connected to 2x 450w solar panels at 40v, but I'm wanting to swap them out for 4x 550w, 14A, 40v panels. The Epever charge controller has a nice LCD screen with a good amount of data but the app is completely useless, so I do want to...

I've just bought 8x 280Ah LifePO4 cells and i'm trying to figure out the best size BMS for them. At the moment I only need to pull 500w at any one time. If i wire the batteries 12v and buy a 60a BMS then I can use upto 720w (12v * 60a) right? So if I wire the batteries 24v would the same...

I think I may have permanently ruined my Lead Acid batteries due to my own neglect... I have 2x 245Ah Lead Acid which I've had constant problems with for months now, they just wont hold a charge. I've had them for just over a year now. I've just tested the gravity with a hydrometer and it was...

I'm trying to convert my battery bank into 24v but I'm doing something wrong! My two 250aH batteries easily convert to 24v by changing the wires over and my 24v 3000w inverter works perfectly fine, but when I try and connect the batteries to my charge controller, the CC flashes rapid green...

Hey Guys, I'm wondering whether I've set up my Solar System correctly, I've done some research into what I need and I thought I could put this together myself, but it's just not putting as much power into the batteries as I thought it would... I live in Spain (Malaga, Costa Del Sol) so we get...