SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: LITHIUM BATTERY

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Old Oct 24, 2014 | 09:36 PM
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F1BHP's Avatar
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From: U.K.
sl600
LITHIUM BATTERY

I am in the process of installing 2 voltphreask lithium batteries however I would like to run just a single battery. Does anybody know of a way to activate the starter armature from the aux battery and eliminating the starter battery. From what I understand the starter battery is used for the starter armature and backup for the aux battery in case of failure.. ANY IDEAS ON HOW TO ELIMINATE THE STARTER BATTERY?

Last edited by F1BHP; Oct 24, 2014 at 09:47 PM.
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Old Oct 26, 2014 | 11:15 AM
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SL 55 and a GT 3000 vr4 Here's my car: http://home.online.no/~ludvs/index.cfm
The starter battery is not intended as a backup battery for the trunk battery.

It operates fully independent, and does not loose juice as the rear battery does after a short while if not disconnected or on a tender.

So it would be a waste of time to have only one battery, maybe only if you were to remove the rear battery because you absolutely need the space.

But it would be so much hassle that it ain't worth it.

The car is designed specifically for having two batteries, so I would only recommend to exchange the rear only with a lithium-ion battery for saving some space.

But just remember to either disconnect the trunk battery if the car will be sitting for more than a week, or buy a C-TEK and use it all the time.
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Old Oct 28, 2014 | 09:49 PM
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Thx. I have a ctec so will keep it hooked up when not in use. Do you know what the weight of the starter battery is?
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Old Oct 29, 2014 | 01:44 PM
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SL 55 and a GT 3000 vr4 Here's my car: http://home.online.no/~ludvs/index.cfm
I don't know the weight, but it is quite light, and cheap.

Good luck with your car, I had to move the battery in the trunk to fit a sub box. It has 150 liter's so it wasn't hard to put it inside the box.

It will only be a little more hassle when it's going to be replaced...



Focal K2 Power 46 KX 4

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Old Nov 4, 2014 | 12:58 PM
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Has nobody else tried a lithium battery swap? Any experience would be appreciated.
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