Battery Conditioner - GLA45 AMG


New Member
Sep 19, 2018
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Your Mercedes
Hi All

I'm looking to buy a battery charger / conditioner for my 2015 GLA45 AMG to keep the battery topped up and conditioned. I'm looking at the CTEK MX5 or MX7 but I'm unsure whether the MX7 is worth the price jump from the MX5. Anyone have any experience of them?

Also, I know in my car I have 2 batteries. If I charge the main battery in the engine bay with the CTEK, will it also charge the secondary battery or do I need to connect a charger directly to that? If so how often does the main and secondary battery need a charge?

Many thanks in advance


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