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Using a Battery Maintainer

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Old Jun 25, 2021 | 02:41 AM
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2021 MB AMG E 63s Wagon, 2017 Porsche Macan Turbo w/Performance Package
Using a Battery Maintainer
New to Mercedes and just wondering if using a CTEK MUS 4.3 battery maintainer would be fine. I will not be driving it much (retired) so I figured just to be on the safe side with all the electronics on this wagon this would keep the battery fully charged. Any information would be appreciated.
Last edited by TDoug1; Jun 25, 2021 at 02:43 AM.
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Old Jun 25, 2021 | 07:44 AM
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18 E63S, 22 etron GT
I have a CTEK that I use on mine for when it sits weeks at a time. No issues at all.
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Old Jun 25, 2021 | 10:27 AM
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'19 E63S
mine was hooked up to one for about a week and had no issues whatsoever!
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Old Jun 29, 2021 | 08:41 AM
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Which battery are you hooking the tender up to? My E63s will also sit for extended periods without driving especially in the Winter.
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Old Jun 29, 2021 | 09:56 AM
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Originally Posted by Sunbeltgolfer11
Which battery are you hooking the tender up to? My E63s will also sit for extended periods without driving especially in the Winter.
Battery terminals in the engine compartment…
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Old Jun 29, 2021 | 10:16 AM
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I used the CTEK 5.0 regularly and even stored the car all winter and it was fine.
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Old Jun 29, 2021 | 11:02 AM
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Originally Posted by TDoug1
New to Mercedes and just wondering if using a CTEK MUS 4.3 battery maintainer would be fine. I will not be driving it much (retired) so I figured just to be on the safe side with all the electronics on this wagon this would keep the battery fully charged. Any information would be appreciated.
I use my NOCO 4-bank maintainer. It only pushes 1amp per bank, but is enough to keep my wagon fully charged...no issues with it on a maintainer for over a year now.
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Old Jun 29, 2021 | 08:33 PM
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Originally Posted by apsuard
I used the CTEK 5.0 regularly and even stored the car all winter and it was fine.
CTEK Maintenance mode is designed exactly for that purpose, copied from the manual:
“The state of charge varies between 95% and 100%. The battery receives a pulse when the voltage drops, keeping the battery in good shape when it is not being used. The charger can be connected for months at a time.”
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Old Jun 29, 2021 | 08:51 PM
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E63S Wagon , Ferrari Challenge Stradale, 69 Camaro, Aston Martin Vantage, 77 Bronco
I use the Ctek trickle chargers for the cars I don’t drive everyday. Not issues at all. My wagon is my daily so it hasn’t been necessary. Ctek private labels for most of the high end car makers, so ether they are really good or have a great wholesale program. Probably both.
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Old Jul 27, 2021 | 03:01 AM
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