I've repaired Ninebot ES2 today. God I hate Ninebot ES2, every time I disassemble one, it feels like I'm fisting an android or something, and that would never fucking end since shit keeps on breaking...
Makes me wonder if Ninebot-Segway is incapable of designing scooters, or it is just ESx an engineering failure, because I don't think M365s (that were released before ESx) are having so many mechanical issues as ESx.
Any segway-ninebot or xiaomi owners? Preferably with high milage scooters. Did you have any weird issues with scooters?
Was a broken solder joint inside the battery (thanks EU faggots for lead-free solder). And since BMS design is extremely retarded (you can't disconnect the cells so you have to solder on live board), I blew up a track when re-soldering the connector, had to run a jumper wire.
Also they started using EVE cells instead of LG M26, which kinda sucks. Old ninebot batteries were weak as fuck (20A discharge max), but this is just pathetic as cells are rated just 7.5A discharge, which means 10S2P pack would be able to deliver just 15A safely, which is too close to typical e-scooter consumption of 12-13A...
>>1949696As for generic scooter in the OP, it did charge to 42.0V in the end, but I kept it charging/balancing for a bit more.
Tomorrow I will see if it would do any better. 13 km to beat.