I have got a cheap folding e bike it's enhance made in China 36 v brushless, this has no battery and I have no idea even if it works but I intend to find out the firs job is to connect a 36v battery I have fully charged and working but the bike has 4 stand up pins that the battery would have fitted to , my battery only has 2 a plus and minus so the first question is does anyone know witch 2 of the 4 pins are the main power I know 2 are the bms for a li-ion but my bats are lead acid, thanks if you know , when I start playing with the bike if it needs taking apart I will post pics as I can't find any and I'm sure others would love to see inside the controler