E-Class (W214) 2024 -

E/W214: full battery charge before the period of non-use.

Old Mar 28, 2026 | 04:20 AM
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full battery charge before the period of non-use.

My car doesn't drive much and I'm planning to leave it unused for a month and a half.(Holiday)
I'd like to know where exactly I connect the cables of a charging device (Bosch C7 charging device. connected to electricity from one side) to the connection points in the car? for a full charge before the period of non-use.
I have a (Mercedes w214 2025 gasoline model)
Thanks.


Last edited by ronenza; Mar 28, 2026 at 04:22 AM.
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Old Mar 28, 2026 | 09:29 AM
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Your owners manual should show where to connect a charger and cables for jump starting. Normally the positive terminal is under a red cover that you slide to access. The negative connection is a close-by brass color stud mounted to the chassis.
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Old Mar 28, 2026 | 09:31 AM
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Thank you.
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Old Mar 28, 2026 | 09:36 AM
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Make sure your tender is compatible with the type of battery you have.
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Old Mar 28, 2026 | 09:40 AM
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Originally Posted by vexige
Make sure your tender is compatible with the type of battery you have.
Thanks.
It seems now that I have to contact my Dealer ….🤔
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Old Mar 28, 2026 | 09:43 AM
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Originally Posted by ronenza
Thanks.
It seems now that I have to contact my Dealer ….🤔
Not necessarily, battery says the type on it, tender has the manual. Or chat gpt...
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Old Mar 28, 2026 | 09:45 AM
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Originally Posted by vexige
Not necessarily, battery says the type on it, tender has the manual. Or chat gpt...
OK. I will see and update. Thanks again.
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Old Mar 28, 2026 | 05:34 PM
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A battery maintainer needn't break the bank. I use a $30 1A Noco that does the job just fine.
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Old Mar 31, 2026 | 01:18 AM
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Originally Posted by streborx
Your owners manual should show where to connect a charger and cables for jump starting. Normally the positive terminal is under a red cover that you slide to access. The negative connection is a close-by brass color stud mounted to the chassis.
The positive terminal for jump starting is under this plastic cover, quite obvious anyway how to access it. Cannot remember but I think the traditional sliding cover is under this plastic panel (I have removed the top panel permanently from my 223, needs charging so often).



Last edited by Diesel Benz; Mar 31, 2026 at 01:23 AM.
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Old Mar 31, 2026 | 04:41 AM
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Originally Posted by Diesel Benz
The positive terminal for jump starting is under this plastic cover, quite obvious anyway how to access it. Cannot remember but I think the traditional sliding cover is under this plastic panel (I have removed the top panel permanently from my 223, needs charging so often).


Thank you.

Indeed the traditional sliding cover is under this plastic panel.
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Old Mar 31, 2026 | 06:37 AM
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Glad you found it.

Last edited by streborx; Mar 31, 2026 at 06:39 AM.
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Old Apr 9, 2026 | 01:38 PM
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A genuine Mercedes charger.

I’ve ordered a genuine Mercedes charger.
hope that it’s fully compatible with my w214.


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