etriker wrote:Don't waste your money on rc lipo for your ebike
Rc lipo for ebike = fail !
Stong opinions for someone with such a low post count.
High C rate lipo for ebike use is brilliant, I wouldn't use anything else and I know many here are in the same boat. But granted, there are limitations to any battery (or any other device for that matter) and if you blatently do the wrong thing things will go sideways.
As stated there's not really a good lipo BMS solution available at the moment and I'd be worried about using one in place of manual cell checking. If they it did fail it introduces other problems and potentially could still let cells overcharge or discharge. But yes, most BMS's I've seen have a charge and a discharge lead. It sounds like this guy would have still managed to overcharge the battery anyway even with a proper BMS in place.
As Alan B said, he rewired the electrics and then used the wrong charger. How do you control against things like that ?? You can't
As for building stuff for other people, the talk of sueing is certainly off putting for those of us who build the odd ebike kit and batteries for others to try and help promote the ebike movement
Fortunately the vast majority of people I've encountered are usually enthusiasts one way or the other so you'd hope they'd have the sense to do the right thing. I encourage all noobs to go with lifepo4 for the plug and play convenience and thoughtless ongoing use. The size and weight of such a pack is an instant deterrant though and usually after test riding my lipo powered bike most will much prefer lipo. I really do build these as safe and foolproof as possible but as above, you can't control for someone doing the above.