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Are there any good deals on new Grade A 280A/hr Eve cells? I’ve noticed on Amazon they are selling brand new Grade A (supposedly) 280A/hr Eve cells for about $660 for a 4-pack with bus bars and nuts included. Its even a 2-3 day delivery! I’ve heard of people buying them for as low as $110...

Hello everyone, How can I get my cells to balance? I’m selling my boat and the lithium cells have been sitting for 6 months unattended with random buyers coming in and hitting switches, draining the system until the low voltage on the BMS units kicked in. When I arrived back in Florida from...

Hello, I re-installed 4 prismatic 300Ah LiFePo4 batteries in my boat a few months ago. Out of the 48 cells, I’ve constructed a 3P 4S system making 4, 300ah batteries at 1,200Ah. (See previous posts) Each battery has its own Overkill Solar BMS. I’ve noticed that Battery 1 & 4 are constantly...

Hey everyone!! EDIT: Yes you read that correctly. I’m willing to pay someone for some good advice helping me choose the settings. I can PayPal you money if you’re willing to help me answer the questions on my second post below. ——————————————— I’m so excited. This is the end of the 5-month...

I was ready to re-install my CALB LiFePo4 system. I had the cells all top balancing for the last 2 weeks charging at 3.65v and all 48 cells connected in parallel. They were already at 3.65v for over a week now. My wife loaded up the storeroom with cases of water where the batteries are and...

Should I be able to use my Xantrex 3,000w Inverter to power a single 1,100w 12,000 BTU, portable air conditioner off the 110v inverter power?? I have 1,200Ah of Lithium Batteries along with 2,060w of Solar. The Xantrex has a 6,000w peak temp power. I’ve seen videos on YouTube where someone...

Hello everyone, I’m wondering if you can charge very discharged LiFePo4 cells at higher voltages to temporarily charge them faster. I’m guessing the answer is no, but I’m mainly wondering why. It probably has something to do with gassing? I just got finished capacity testing 48 CALB brand...

Hey everyone, My system is almost ready to put back together. I’m trying to figure out how to match the cells together and follow the advice I was given here. Any advice on the order? I’m designing a 12v 1,200Ah 3P 4S system with four batteries. Each 12v 300Ah battery has 12 cells and the...

Hey everyone, I searched through all the other posts and couldn’t find an exact answer for this. I need to know: 1. What size BMSs do I need? 2. If I buy four of them, do they connect to each other in some way? 3. What other equipment/wiring/monitoring system is needed? 4. The cost of...

Hello, I’m not sure my Solar Panels are operating correctly? I could use some advice please. Even with one of the three solar controllers not working, shouldn’t I still be getting decent power to charge my batteries? This is the last system I need help with on my boat. I really appreciate all...

Hello, I live on a boat and I’m in a bad situation. If I lose my batteries, I lose my navigation and auto-pilot. HERE IS MY MAIN QUESTION: How can I tell the capacity reading is correct? Does it take a long time to update?? Maybe if I don’t hook up the charger Leads in the correct place, the...

Hello, I’m wondering if my new Capacity Tester is bad or the first battery I tried testing is bad? It’s the exact capacity tester in Will’s video: I tried my first capacity test using that cheap $40 capacity tester that Will had on his channel. For some reason I can’t get it to work, but it...

Hello, Maybe someone can help me please? I suspect that some of my cells are bad. My main goal right now is to test all 48 cells but I'm not sure what is the best way? Wouldn't a capacity test show me a better, more definitive result? (Or does a capacity test on 48 cells take over a month like...