So I finally have some time to do something with the stuff I ordered from OSN Power.
What I got:
8 x AMP20M1HD-A A123 20Ah cells
1 x OSN-Assembly kit
1 x BMS-L4S100100-480 4S 100A 100A BMS
1 x CHA-1210 Lifepo4 12V 10A charger
I'm going to build myself a 4s2p (12v 40ah) booster battery for my scooter. With my current 13s Li-ion battery at 54.6 volts fully charged plus the booster battery at 14.4v fully charged, I'll be sitting at 69v fully charged. I'm pretty happy with how the math worked out on that.
First off, they sent me a 36v 10a LifePO4 charger by mistake. They basically said to keep it and sent me another 12v one. That's pretty cool if you ask me. I now have this charger to sell if anyone wants it.
Here's what they look like:
Yep. Wrinles. Short tabs. Some were even bent a little. Not a chance these are grade A cells.
Oh well, they'll do for me I guess. So I went over to the dollar store and got some dinner placemats to use as spacer material, and started putting it together:
I figured to do the 4s2p, I'll connect them in parallel groups and then use some copper plate to make the serial connections after.
The BMS they sent me is actually 2 boards:
I assume that they both need to be hooked up. Seems odd to me tho...not that I know anything about BMS boards.