How to keep my Mercedes charged up?

Hi,

I have a 2017 C-Class Mercedes (C 300) that I keep in Spain for when I visit. As it's one of these modern cars permanently connected to the internet, the battery only lasts 4-5 weeks. As I don't have any means to keep it charged, would it do any harm if I disconnected one of the battery cables to keep the battery charged up?

Philip

Philip Donegan (Ballina)

Apr 2018 Filed under: electrics

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Expert answer

Hi Philip,

Potentially, yes, as sometimes disconnecting the battery can cause a modern car to go into a total re-set, wiping any stored information. I think you have two options: one, buy a trickle-charger (available from any good motor factors) that will keep the battery topped up without disconnecting it, and two, have a word with the local Mercedes garage in Spain, who may be able to help you with the issue. Worth doing that second one either way.

Neil Briscoe - Complete Car Advisor
@neilmbriscoe