[Jamiewelch]

Originally Posted by COLVERT

All these code letters are marvellous things but totally useless to most folks like myself.-- Now go stand in the corner and say to yourself--I MUST MAKE MYSELF CLEAR IN MY POSTS---



Bumping up the charging voltage will NOT EXTEND a batteries life. ( As BMW found out when they learnt a bit more about batteries. )

Haha, put simply its the BMW dealer diagnostic system, like the T4 was the Rover dealer diagnostic system.

Bumping the voltage up can potentially get some charge in an iffy battery, but it’s by no means something that should really be done. There’s more to the intelligent charging system than that though