Search results

In the BMS app for the Overkill it reads out 14.4v and all cells at 3.6v as my multimeter does, but then past the BMS at my actual terminal lugs it reads 14.12v. Is the BMS supposed to drop the voltage like that?

I had my charger set to 3.6v but coming into the third week of top balancing I decided to up the voltage since my cells were barely charging (like .001v a day if that.) I read here and there that the absolute max a lifepo4 could be charged to was 4.2v and so thought setting the charger to 3.8v...

I ordered early October during a Chinese holiday and so got confirmation that my order was processed by Docan and sent out Oct 8 after their week long holiday. Allen He said that my cells were in the container and waiting for the ship as of 10/22. Just wondering what the average wait time is...

Will it damage the cells if they're in a fixture that doesn't allow them to expand, or is that kind of the point of compression? I'm thinking of putting rubber on the ends of the battery (4 cell 280ah) if they do need to be able to have some wiggle room, but otherwise I can just enclose them...

I built a 280ah battery last year for my van build which I recently found had started to leak electrolyte. I wasn't aware of it being necessary to have material between the cells other than for insulation (oops) and so two of them ended up chafing against each other. Electrolyte started leaking...

Haven't used my battery I made for a few months now, and just got my solar panel rewired today with flexible cables instead of the solid cores I had only to find liquid under and in my battery case. I took it out of the case I put it in and found that two of the cells were chafing together as...

I’m trying to configure my BMS for my 280ah 4s battery. I downloaded the parameter files through Overkill’s site but it doesn’t show up when I open the app and try and select a file. I was following Wills one video on how to make a 12v4s battery, and when he opened his app the params were...

He mentions it in his one DIY battery build video yet I can’t seem to find it on his site (I’m on mobile.) edit: I found it yet it’s 404’d :( I guess I have to buy their app?

Will a regular zinc plated bolt be fine? I saw Will use an “industrial bolt,” which makes it sound like he just grabbed a regular zinc plated steel bolt. If not, I wonder where I could fine a nice conductive bolt in person (as I’d rather not have to wait for a delivery.) I’m gonna be pulling a...

So I top balanced my cells almost a month ago now, and have a few questions. I’ve been converting a van and thus using my battery for my setup, but had to move in a few weeks ago and so things have been a little tough as I don’t have my van close to completion yet. Firstly, I’ve kept them at...

So I’m still top balancing my cells, and originally my one cell was charging more than the other 3. It was determined I didn’t have proper connections, so I fixed that issue and then the those 3 all started coming up in voltage together. The one cell was higher in voltage, and so it staid about...

How long will this initial top balance then keep them balanced? I have an Overkill 120a BMS. I know it probably depends on how deeply discharged and then recharged they are, and how many cycles of that it goes through, but I do intend to use this battery quite frequently (it's going into my van...

So I bought 4 280ah cells off aliexpress to build a 12v battery for my van conversion. They all measure to 3.233v. Do I still need to top balance these? Also, how often do cells generally need to be top balanced over their lifespan? Thanks for any help. I'm not sure if I should go through...