SL/R230: 05 SL 600
10-04-2016, 11:41 PM
#1
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2005 SL 600,2002 M3,1993 Vette!
05 SL 600
Which battery should be trickle charged?
Or should it be both?
It would be nice if there was a way to start the car with the rear battery when the start battery wont.
Or should it be both?
It would be nice if there was a way to start the car with the rear battery when the start battery wont.
10-05-2016, 06:14 PM
#3
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It should be the rear that gets the trickle charger. My understanding is that the rear will assist starting if the front battery is low or dead.
10-07-2016, 07:09 AM
#4
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2005 SL 600,2002 M3,1993 Vette!
When my start battery would not crank the car enough to start the car that lazy ******* in the back never helped out!
Of course, it's possible a relay might not be doing its job.
It's hard to get good work now a days!
Of course, it's possible a relay might not be doing its job.
It's hard to get good work now a days!
10-07-2016, 09:40 PM
#5
MBworld Guru
Here's the WIS doc explaining the 2-batteyr system:
http://benzbits.com/R230/BatterySystem.pdf
An undervoltage condition on the starter battery will cause the power supply control module to connect the two batteries in parallel. Now, it remains to be seen how well this works in practice. Two old, poorly charged batteries are really no better than one. Also, a starter battery with a dead cell can act like a giant resistor and limit the output of the consumer battery.
http://benzbits.com/R230/BatterySystem.pdf
An undervoltage condition on the starter battery will cause the power supply control module to connect the two batteries in parallel. Now, it remains to be seen how well this works in practice. Two old, poorly charged batteries are really no better than one. Also, a starter battery with a dead cell can act like a giant resistor and limit the output of the consumer battery.
10-07-2016, 10:01 PM
#6
Member
Here's the WIS doc explaining the 2-batteyr system:
http://benzbits.com/R230/BatterySystem.pdf
An undervoltage condition on the starter battery will cause the power supply control module to connect the two batteries in parallel. Now, it remains to be seen how well this works in practice. Two old, poorly charged batteries are really no better than one. Also, a starter battery with a dead cell can act like a giant resistor and limit the output of the consumer battery.
http://benzbits.com/R230/BatterySystem.pdf
An undervoltage condition on the starter battery will cause the power supply control module to connect the two batteries in parallel. Now, it remains to be seen how well this works in practice. Two old, poorly charged batteries are really no better than one. Also, a starter battery with a dead cell can act like a giant resistor and limit the output of the consumer battery.
