@pushkar Do you know any new information when a controller or either a whole M500/M600 is going to be available from Innotrace? I am based in Czech Republic and i would like to swap the stock M500 on my bike for something more powerful as soon as possible. Battery is 36V 630Wh but i have a feeling that the motor is getting weaker after less than 90% of battery charge - feels like there is some sketchiness in the bafang firmware because i have ridden it also during morning in 5 °C when motor was barely warm so it shouldn't be anything heat related.