Controller upgrade help for REI Gen E1.2

[micktor]

this is the easiest way to do it 10S/13S/14S 36V/48V 6Mosfets Sine Wave Controller for Hailong case 52pcs cells [Hialong 1 Case Controller] - $45.00 : Zen Cart!, The Art of E-commerce

https://www.reddit.com/r/ebikes/comments/1dq36c3