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I've had my share of disasters caused by not waiting for the 'smart' guy to come help me. I burned up the motor controller on my sailboat electric motor conversion. 'Magic Smoke' ! I suffer from 'I can do it myself' syndrome. Sometimes I can. In spite of watching countless hours of videos I...

I've never purchased anything from Alibaba. I did buy my cells from Docan, an Asian company but they have warehouses in Texas. So. it took less than a week to get them. Overkill seems like a great outfit to do business with. I have exchanged email with Troy. Have not met Steve yet. I need to do...

I get what you mean but I'm being careful. I don't have a BMS yet. I'm bringing the pack up to apx 14 Volt. Then I will rewire the pack in parallel and use my DC power supply to top balance. Thanks for the warning. I figured out pretty quick that something was not right with the battery...

Ok then. I will stop trying to be a BMS and wait for the Overkill BMS to arrive a few days from now. BTW, I was monitoring individual cell voltages as I charged the 12 volt pack. All the cells are staying at the same voltage, 3.3 . I certainly have no desire to destroy the cells. I just had to...

Well, the people here or some of them have been witness it seems to many battery disasters. As folksy dude put it, 'Smart people learn by observation and from other's mistakes but some of us just have to pee on the electric fence themselves.'

Being retired and living on SS I went for the cheapest cells. I bought the B grade. Hope I don't regret it. I expect good things from Overkill. I have yet to capacity test the cells. So I don't know what the SOH is.

By 'The guide' ? What's that?

I almost bought cells from them. I really like the terminals but I went for a cheaper option. I got grade B 280 ah cells from Docan. They ship from Texas. I'm not trying to rain on your parade. Just saying for the benefit of those looking to buy cells. I do envy you for those terminals. Should...

I'm a newbie in this forum but I have messed about with electrifying sailboats in the past. It was awhile ago so my options then were lead acid. I have joined the four cells that I just received together and they're charging up. It's interesting to observe how lifepo4 batts charge compared to...

I thought I ought to update this thread. I emailed Troy at Overkill. He told me that an 8s will NOT work with a 4s setup. I received my EVE 280 Amp cells today. They are bulk charging at the moment. I wonder if the Overkill 120 amp BMS is appropriate for these batteries ?? It would limit me to...

I've got a power supply hooked up to the cells. They are in series. I'm charging at 3.55 volts. The read out on the Dr Meter says it's only outputting 2.34 volts but my amp meter says it's abut 4.7. I would expect it to output the max of 5 amps. Anyway it's top balancing. I have it set up so it...

Thanks for reminding me that a 12 volt battery is more than 12 volts. ;- ) 1536 W should be sufficient. I hope to be able to run my induction cook top when we lose power. This happens a lot lately.

I have four 280 ah batteries on the way. My intention is to get four more so I can build a 24 volt system. My question is, if I have an eight S BMS can I temporarily use it for just four batteries or must it be hooked up to eight ?

Sorry for not mentioning. Yes LiFePO4. EVE cells. The BMS I am considering are the ones that Overkill Solar sells. I realize that the BMS' are made for 4, 8, 16. To be clear, I intend to get 8 cells eventually but for now I will have just four cells. Thanks for responding. Cheers!

Well then, I guess I'll just wait until I have 8 batteries. No sense in damaging things just because I'm impatient. I kinda figured that it was possible to use the batteries without a BMS but I don't need to right now. Thanks again for the feedback.

I'll do that, send a message. Thanks.

Yeah you're right. The stock leads are crap. But that wasn't the problem. I had to readjust the meter. Now output steady 5.2 amp. I did up grade the leads. Got carried away. I have three set of leads now. I checked the amps on the different leads. The amp output gets divided. That surprised me...

Good idea !!

I upgraded the leads. The voltage reading on the Dr meter is correct. The voltage showing is not the limit it's set at. It's doing it's thing at CC. The voltage showing will- is rising as the cells charge. I'm going to turn it off when I go to bed, just to be safe. Not sure I trust this Dr Meter...

I thought I should post my results now that I've got all the components together. After top balancing with a power supply the BMS took no time to finish the balancing of the cells. So, no magic smoke ! I want to recommend the power supply I ended up getting. I returned the Dr Meter power supply...

I've downloaded the manual. Now all I've got to do is make myself read it.