Is it possible to retrofit the G20 auxiliary battery?

Soul_Glo · 12-19-2020, 10:50 AM

Some folks have a small battery under the hood. My G20 does not. Can it be retrofitted?

Soul_Glo · 12-19-2020, 10:51 AM

This is where it is on some cars.

HighlandPete · 12-19-2020, 11:53 AM

Quote:

Originally Posted by Soul_Glo

Some folks have a small battery under the hood. My G20 does not. Can it be retrofitted?

Yes.... get the light hybrid model.

danorman777 · 12-19-2020, 03:25 PM

Is that where the 48v hybrid battery goes if fitted? It is a big empty hole on my G21. Seems a lot of wasted space?

I was going to hold a poll to see what the funniest thing to keep there would be!

CeriusM · 12-19-2020, 03:27 PM

Wait, isn't the battery in the trunk? The 48v? Mine is.

Soul_Glo · 12-19-2020, 05:09 PM

Quote:

Originally Posted by CeriusM

Wait, isn't the battery in the trunk? The 48v? Mine is.

The starter (main) 12v is in the trunk.
The hybrids have an auxiliary under the hood.
I'd like to add one.
Our Mercedes W205 has an auxiliary battery. It takes care of all electronics in start/stop conditions. It can power the fan/radio for at least 6 hours once fully charged. A clever trick is if the starter is flat then the car could even be jumped from the auxiliary.
I thought it'd be worth it as I have the space there but I guess there would be a lot of coding and that would then invalidate the warranty on the electronics.

CeriusM · 12-20-2020, 12:54 PM

Quote:

Originally Posted by Soul_Glo

The starter (main) 12v is in the trunk.
The hybrids have an auxiliary under the hood.
I'd like to add one.
Our Mercedes W205 has an auxiliary battery. It takes care of all electronics in start/stop conditions. It can power the fan/radio for at least 6 hours once fully charged. A clever trick is if the starter is flat then the car could even be jumped from the auxiliary.
I thought it'd be worth it as I have the space there but I guess there would be a lot of coding and that would then invalidate the warranty on the electronics.

Thanks for the clarification!

Jim_330e · 12-21-2020, 06:49 AM

Quote:

Originally Posted by Soul_Glo

This is where it is on some cars.

If you don't open the bonnet you won't see the space.

And why would you want to weigh your car down with something that's not supposed to there?!

HighlandPete · 12-21-2020, 09:14 AM

Quote:

Originally Posted by Soul_Glo

I thought it'd be worth it as I have the space there but I guess there would be a lot of coding and that would then invalidate the warranty on the electronics.

... and a bit more kit.

Thompjas · 12-21-2020, 09:35 AM

I have this battery installed on a 320d 'Sport' and wondered what it's purpose was?

12-19-2020, 10:50 AM	#1
Soul_Glo Major General 13342 Rep 7,484 Posts Drives: G20 Join Date: May 2013 Location: Manhattan, NYC iTrader: (1)	Is it possible to retrofit the G20 auxiliary battery? Some folks have a small battery under the hood. My G20 does not. Can it be retrofitted?
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12-19-2020, 10:51 AM	#2
Soul_Glo Major General 13342 Rep 7,484 Posts Drives: G20 Join Date: May 2013 Location: Manhattan, NYC iTrader: (1)	This is where it is on some cars. Attached Images
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12-19-2020, 03:25 PM	#4
danorman777 Captain 102 Rep 343 Posts Drives: M340i Touring Join Date: Sep 2015 Location: Sussex iTrader: (0)	Is that where the 48v hybrid battery goes if fitted? It is a big empty hole on my G21. Seems a lot of wasted space? I was going to hold a poll to see what the funniest thing to keep there would be!
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12-19-2020, 03:27 PM	#5
CeriusM Private 11 Rep 62 Posts Drives: 2021 PMB BMW 330ix M Join Date: Nov 2020 Location: MD iTrader: (0)	Wait, isn't the battery in the trunk? The 48v? Mine is.
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12-21-2020, 09:35 AM	#10
Thompjas Private First Class 45 Rep 121 Posts Drives: G20 320d Sport Join Date: Jun 2013 Location: Northants iTrader: (0)	I have this battery installed on a 320d 'Sport' and wondered what it's purpose was? __________________ New Car - G20 320d Sport - Sunset Orange, Oyster leather interior Previous New Car - X1 Sdrive M Sport - returned it - hated it Old Car - F30 320d ED in Mineral White
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