My new rear axis broke :-(
About me converting a Mini-El City -91 to Lithium.
Finally I got the time to do the upgrade from 12S to 15S.
For the 48V rebuild I must program the controller for 48V instead of 36V.
For this I need a programmer cable. I built my own and it works great.
First test was to adjust the current limitation on the controller and remove the "boost" function.