SL/R230: REAR BATTERY CHARGING
10-20-2023, 12:59 PM
#1
Senior Member
Thread Starter
REAR BATTERY CHARGING
R230-ENTHUSIASTS:
WHAT WOULD BE THE BEST APPROCH TO CHARGE THE REAR BATTERY...
1.-DISCONNECTED
2.-CONNECTED
AS ALWAYS THANKS FOR YOR WISE FEEDBACK
WHAT WOULD BE THE BEST APPROCH TO CHARGE THE REAR BATTERY...
1.-DISCONNECTED
2.-CONNECTED
AS ALWAYS THANKS FOR YOR WISE FEEDBACK
10-20-2023, 02:24 PM
#2
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I always left mine connected using a CTEK charger and had no problems. Others may disagree.
10-20-2023, 02:25 PM
#3
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
By the way, do they always yell a lot in Louisiana?
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Tom Manning (10-20-2023)
10-20-2023, 06:09 PM
#5
Super Member
Leave it connected. I have my C-Tec (MBZ) charger wired so I can plug it in without removing panels. I trickle charge it when it's perked in the garage. Works great that way.
10-21-2023, 08:42 AM
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I would strongly recommend CTEK as they make the Mercedes-branded chargers. The MXS 5.0 is under $100. Please don't go cheap. Your car may be old, but it is still a highly sophisticated piece of electronics.
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10-21-2023, 09:06 AM
#9
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
It's worth checking the health of the front (starter) battery from time to time. When they go out, it is sudden and without warning, like stopping for gas and then the car doesn't start. The rear battery is not used as backup for the starter battery.
10-21-2023, 03:39 PM
#10
Super Member
I would strongly recommend CTEK as they make the Mercedes-branded chargers. The MXS 5.0 is under $100. Please don't go cheap. Your car may be old, but it is still a highly sophisticated piece of electronics. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
