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Aux Battery and Trickle Charge

PaulXC

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Joined
May 25, 2012
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Location
North West
Car
2018 E220d S213 ||| 2012 E500 4.7 V8 Bi-Turbo Cabrio ||| 2024 Mercedes 4x4 Hymer
Few questions …

Does keeping the car on trickle charge using my Ctek keep the Aux battery topped up as well as the main battery?

Where would I find the Aux battery on the A2017 2012 E500 - somewhere around the driver’s side footwell maybe?

Anyone know the part number for it?

How long would at the Aux battery last ? - pretty sure mine is the original one.

Tia
 

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