I did it on my wife’s Smart (2017) battery was always a bit lazy as used on short runs .A recon gave it new life with the C TEK.
No detectable problems ,new battery for a stop start car .....£100.00 barking mad .
How ever with the Mog I would disconnect the Battery.
Last edited by MR11MOG; 08/09/20 12:29 PM.
