Winter Storage Tips?
Specifically, how frequently should I start up the car to avoid battery depletion? There's no plug for a trickle charger
Would disconnected the battery all together be a bad idea?
When I do start it up, do I drive it around a bunch or just let it idle for a while?
Cover or no cover?
Any other tips?
Thanks!
Why will it do more harm than good?
Any suggestions if I can't hook up a charger?
Any suggestions if I can't hook up a charger?
Sitting for a few days is one thing, but weeks?
No...
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Personally I think that's all you really need. With that said, when I lived in Canada, the AMG still got active duty in the winter. Just swap some Winter Performance tires on it and you're good to go. The only conditions that would stop the car should also shutdown any businiess or destination you were planning to go to regardless.
The Best of Mercedes & AMG
Garage is heated and on days where it’s not miserably cold, take the car out for a spin then wash it.
Did you leave the battery connected while charging?
The CTEK 4.3 can go up to 15.8 volts during desulphation and recond steps. My 2011 C300 manual says 14.8v max for chargers. Any issues (with battery connected)?
Also some newer cars have lithium-ion batteries. You may need a CTEK lithium charger.

From MB 2018 user manual:
! Only use battery chargers with a maximum charging voltage of 14.4V.
All vehicles except vehicles with a lithium-ion battery:
! Only use battery chargers with a maximum charging voltage of 14.8V.
Last edited by benzdude; Feb 10, 2018 at 02:58 PM.
Did you leave the battery connected while charging?
The CTEK 4.3 can go up to 15.8 volts during desulphation and recond steps. My 2011 C300 manual says 14.8v max for chargers. Any issues (with battery connected)?
Also some newer cars have lithium-ion batteries. You may need a CTEK lithium charger.

From MB 2018 user manual:
! Only use battery chargers with a maximum charging voltage of 14.4V.
All vehicles except vehicles with a lithium-ion battery:
! Only use battery chargers with a maximum charging voltage of 14.8V.
Your CTEK 4.3 is probably zipping through step 1 desulphation (15.8v pulse) since your battery is in good health. Just don't add step 6 recond (15.8v max) to the charging cycle with the battery connected.

You are a brave man.









