JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
Lithium ion cells (some better than others), voltmeters, an active cell balancer and lots of wires.
Lithium ion cells (some better than others), voltmeters, an active cell balancer and lots of wires.
This seven segment meter buying link please
Great info here, what is it you're using to charge the pack ?
Did you ever make the followup video to this one? Will Prowse seems to think these balancers aren't actually transferring power to the lower voltage cell, but rather just automatically bleeding the higher voltage cells through a resistive load on the board. I'd love to see an out of balance pack raise the voltage of the lowest voltage cell using one of these balancers.
Hi Julian, can you please do a video of how to make a fully protected 4s2p pack with this kind of balancing and all the protection for portable use. that would be amazing.
This balancer transfer in both directions
Do active balancers like this also work for charging?
Anyone know where he gets those battery connectors (holder components) that he's using?
How hard is it to use a multimeter and probe each cell pair? You have quite a bit of equipment but no multimeter? Sorry for sounding harsh but this is the second video where all the mystery could be solved with a simple voltmeter. Just measure the voltage of all the cells!
Could you reverse engineer it?
I'would love to understand how those works!
Thanks for this video 🙂
I'm really glad to see you doing these tests, I bought one of these balancers hoping it would work on my 120AH LiFePo4 battery, but until I am able to charge and discharge it, it's not any use. I feel i'll be way too small for that anyway. Getting together the kit to do this is proving rather expensive…….
I picked up a 5A version of this board on ebay and again waiting to test. Ordered a 4 cell 18650 holder so will conduct the same experiments as you with this larger unit, I'm hoping for good things.
There is a useful unit by ISDT called BattGO that's an 8s meter/balancer designed for RC use that might be less unwieldy than all the separate volt meters.
Thanks again 🙂
Interesting work, shame you don't have another device capable of reading voltage. 🙁
why no Arduino nano and oled display voltmeters?