Originally Posted by
ammdrew
If you plugged the the battery in Backwards even for a 100th of a second you usually damage the rec. I would be more surprised that it works at all. Be aware sometimes you damage the fet and even if it functions it may not for vary long.
All speedo's do not respond well if reverse polarity is plugged in.
This is on the ESC they sent me after repair which was not plugged in backwards and new