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Hello community real short I have a jkbms and I'm using the 21700 45a cells to get 72v but pack won't fully charge only gets to 79v why could someone tell me how if they have same setup. Oh pack is 20s 4p controller is 60a in the ap it only allows me to set SOC to 4.18v not 4.2? HELP.

Will somebody help me to understand how to connect learning wires and if this controller provides a ebrake connection

BMS is giving low voltage at c and b- pads is there a fix? Or is it ash canned. Was working and just ate it when I wanted to test ride my diy moped.

Hello how's the community? I got this question I'm wondering if this controller has eabs. I'm sure somebody knows, so Holla at my olass and let me know ✌️

My 36-48v converter some how broke all three legs of the mosfet on the board. It's a irf3710 100v 57a n chanel can it be replaced with higher volt lower amp and function until parts come. Thinking about using K3568 500v 12a n chanel is it safe.

Greetings EBR I have a stupid question I've built a 14s battery with 2.55 10a Max discharge output 18650 cells. Not the problem what is and don't laugh, I have a 350w brushless motor was the a max of 12a in a 12.5" hub. I'm using a 1000w 38a 60-120° 38a max controller. Should I use the 15a max...

Greetings EBR I have a stupid question I've built a 14s battery with 2.55 10a Max discharge output 18650 cells. Not the problem what is and don't laugh, I have a 350w brushless motor was the a max of 12a in a 12.5" hub. I'm using a 1000w 38a 60-120° 38a max controller. Should I use the 15a max...

Hey folks how's it going I must be the dumbest person in creation I have a 12v tail, brake and turn signal motorcycle light. I have the driving lights on and turn signal hooked up but can't get brake connected. I want the brake light on when lever is pulled and motor stops someone help me...

Okay so I know you guys on here don't like to mess around with people who diy I know that because of lack of response to another query I posted but f*ck it here's another one I have a DIY'ed scooter using a car alternator 36v li-ion battery 10ah capacity problem is that when I give this thing...

I guess this is a dumb question but I am curious. Has anyone taken those hoverboard batteries apart combine 2 together using a 10s 4p bms? I haven't s because of concern that the 18650 cells may not be rated the same, but shouldn't they have the same capacitance? and all I'd have to do is...

Hey this is gonna sound kinda mess up coming from an old man but I'm working on a e 300 scooter for a mobility scooter and for the life of me I can't figure out why it keeps going full on when I connect the battery. It runs through the speed controller. I have a 36 v motor/battery had a 36 v...

I have this question about building Li-ion batteries, I'm just getting into electric mobile devices planning on making one for myself. I have a kids/adult Razor scooter that I'm trying to juice to get to local stores. The intention is to build a 10s4p battery pack but don't have all the 18650...

I'm old and poor so any and everything I'll be working on will be self applied. Currently I'm trying to work on wiring a simple 7 wire controller that has a f/r switch and pot for speed control. I also have a twist throttle 7 wires with voltage display and forward/reverse switch I can't get...

Hello everyone here at EBR, I'm glad to be joining the community and have just began looking into the e-bike movement. I feel that being here I will learn lots of helpful information. Should any respond to my post please be patient as I know nothing of what i'm doing and have a slight mental...