Hey, i own an AEboard AE1 (which i love). I let my board charge entirely about 2 months ago, i came back yesterday and the thing wouldn’t turn on or charge. This was seird since i had let it sit for more than 2 months before and it still had charge.
I tried charging it with a lab bench supply (charges at 42v 2A since it’s a 10s3p battery), it wouldn’t take the charge.
I disassembled the skateboard and checked the voltage at the B+ and B- poles of the battery, it reads a steady 40.2V which seems normal.
If I check the voltage at the charging port, it reads 37V and drops down to like 8V when i try to turn it on.
Basically you’re not discharging via bms, but from the main battery instead. You just solder the negative wire from the battery to your XT connector instead of the bms negative wire. Then you solder the bms wires accordingly. B-, b1, b2, b3, etc. The last b+ wire goes to the positive discharge wire. The b- goes to the negative side of the battery displayed by the old b- wire on that bms.
Thanks, i just tried connecting the battery directly to the ESC board and it turned on and worked ! So I’m guessing the BMS is dead. The original one is a “BZA13_3260_D20C20_10S”. I Believe it means the bms is meant for charging at 20A and discharging at 20A. I couldn’t find an original one tho.
So I bought one rated for discharging at 30A but i now realized it’s rated for a charge of 10A, hopefully it won’t be a problem.
He was saying that the power wouldn’t remain on or charge. I took that as an bms issue because this also happened to mine. The same with the charging.
Aeboards uses a very small bms that breaks easily due to vibrations. I know this extremely well. I would had suggested other means if he said the voltage was abnormal.
I checked my pgroup and they were all fine. But I agree that he should check his as well. No issues on that.
I agree with @b264 what are the voltages of each individual P group?
If the values are not identical, a conclusion (not necessarily your situation) could be drawn that you have a loose nickel strip in one of the P groups causing unequal balancing amongst cells.
