Aux Battery..?

stevebez · 10-19-2009, 11:26 AM

So where is it and whats its rating....

And I did STFF... but surprisingly found bagel.

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dyno · 10-19-2009, 11:50 AM

located below the AC evaporator

Yacht Master · 10-19-2009, 11:57 AM

Quote:

Originally Posted by stevebez

So where is it and whats its rating....

And I did STFF... but surprisingly found bagel.

Steve on our US cars it is on the passenger side, under a cover by the windshield washer fill. In the pic it is under my shop light. I don't recall what the specs are but a guy could probably get a better than stock one for less $ than what MB charges.
DCP41102.jpg

Ammi · 10-19-2009, 01:35 PM

can't find the thread explaining what size battery that is. If I remember correctly, you can buy a motorcycle battery and it drops right in...

stevebez · 10-19-2009, 01:58 PM

Thanks Guys...

So how is this charged up? - is it in paralel with the main battery or completely seperately controlled / charged?

For example if I charge my main battery with all car leads off, only it charges - if I leave the car leads on will this battery be charged too, or do I specifically need to charge it in isolation?

Ammi · 10-19-2009, 05:05 PM

found it:

http://www.mbworld.org/forums/2764501-post47.html

dyno · 10-19-2009, 08:24 PM

Quote:

Originally Posted by stevebez

Thanks Guys...

So how is this charged up? - is it in paralel with the main battery or completely seperately controlled / charged?

For example if I charge my main battery with all car leads off, only it charges - if I leave the car leads on will this battery be charged too, or do I specifically need to charge it in isolation?

no, the aux batt is charged by the alternator.
it is independent from the main batt, therefor eif you charge the main batt, the aux will not get charged.
Aux batt kicks in only when the main battery voltage goes below 11Volts and this function is regulated by a specific control module located close to your spare wheel/rear lights.

you can replace it with whatever 12V battery you want, who fits inside there. just make sure it has at least that peak amperage (170 A).

btw, ... if you need, you can fit into the car also a third battery, better if connected in series after the main battery, provided you put in between a relais or another multiple battery manager, like for example the old Orion MBR70 ... or something newer like a CPSr Rockford, a Jacobs Accuvolt, an Helix XXL ..

stevebez · 10-20-2009, 07:12 AM

Sounds like you need serious amps to drive your amps Marco!!!

dyno · 10-20-2009, 01:06 PM

Quote:

Originally Posted by stevebez

Sounds like you need serious amps to drive your amps Marco!!!

yeah ...
but I gave up the idea of a third batt

.. now I am working on a project for a very special lithium replacement of the main battery, able to put out at least thousands ampere for long enough

final result, if positive, will be LESS weight than our stock batt

will see .. if we can come up with the special battery control module we need to design ...

then, I'll be ready even for .... a KERS

stevebez · 10-20-2009, 04:46 PM

hahha extra 80hp at push of a button would be nice......

10-19-2009, 01:58 PM	#5
stevebez MBWorld Fanatic! Join Date: Jul 2005 Location: London, UK Posts: 2,292 Drives: No longer stock '06 E55, 330i BMW, LRD3 HSE, A160	Thanks Guys... So how is this charged up? - is it in paralel with the main battery or completely seperately controlled / charged? For example if I charge my main battery with all car leads off, only it charges - if I leave the car leads on will this battery be charged too, or do I specifically need to charge it in isolation? __________________ Rgds Steve 2006 E55 Iridium Silver [X] AMG 19" 2 Piece IV [X] MP designs steering wheel [X] Front washer lowering [X] Wetterauer SportversionII [X] ASP 180mm Pulley [X] VRUS HEM [X] VRUS 80mm TB [X] VRUS CF Airbox [X] VRUS S/C Phenolics [X] Quaife [X] 2.82 diff gearing [X] Kleemann TCU Full Upgrade [] Kleemann Camshafts - on their way! [X] W220 Extra Heat Exchanger [X] CODE3 Front Heat Exchanger [X] Johnson CM90 [X] 10 Gal Rear mount reservoir

10-20-2009, 07:12 AM	#8
stevebez MBWorld Fanatic! Join Date: Jul 2005 Location: London, UK Posts: 2,292 Drives: No longer stock '06 E55, 330i BMW, LRD3 HSE, A160	Sounds like you need serious amps to drive your amps Marco!!! __________________ Rgds Steve 2006 E55 Iridium Silver [X] AMG 19" 2 Piece IV [X] MP designs steering wheel [X] Front washer lowering [X] Wetterauer SportversionII [X] ASP 180mm Pulley [X] VRUS HEM [X] VRUS 80mm TB [X] VRUS CF Airbox [X] VRUS S/C Phenolics [X] Quaife [X] 2.82 diff gearing [X] Kleemann TCU Full Upgrade [] Kleemann Camshafts - on their way! [X] W220 Extra Heat Exchanger [X] CODE3 Front Heat Exchanger [X] Johnson CM90 [X] 10 Gal Rear mount reservoir

10-20-2009, 04:46 PM	#10
stevebez MBWorld Fanatic! Join Date: Jul 2005 Location: London, UK Posts: 2,292 Drives: No longer stock '06 E55, 330i BMW, LRD3 HSE, A160	hahha extra 80hp at push of a button would be nice...... __________________ Rgds Steve 2006 E55 Iridium Silver [X] AMG 19" 2 Piece IV [X] MP designs steering wheel [X] Front washer lowering [X] Wetterauer SportversionII [X] ASP 180mm Pulley [X] VRUS HEM [X] VRUS 80mm TB [X] VRUS CF Airbox [X] VRUS S/C Phenolics [X] Quaife [X] 2.82 diff gearing [X] Kleemann TCU Full Upgrade [] Kleemann Camshafts - on their way! [X] W220 Extra Heat Exchanger [X] CODE3 Front Heat Exchanger [X] Johnson CM90 [X] 10 Gal Rear mount reservoir

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10-19-2009, 11:50 AM	#2
dyno Super Member Join Date: Apr 2007 Location: Italy Posts: 701 Drives: cls 55	located below the AC evaporator

10-19-2009, 01:35 PM	#4
Ammi Member Join Date: Sep 2008 Posts: 182 Drives: W211 E55	can't find the thread explaining what size battery that is. If I remember correctly, you can buy a motorcycle battery and it drops right in...

10-19-2009, 05:05 PM	#6
Ammi Member Join Date: Sep 2008 Posts: 182 Drives: W211 E55	found it: http://www.mbworld.org/forums/2764501-post47.html

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