SL55 AMG, SL63 AMG, SL65 AMG (R230) 2002 - 2011 (2003 US for SL55 and 2004 for the SL65)

SL55/63/65/R230 AMG: Battery discharge

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Old 11-29-2019, 01:01 PM
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2004 M/B SL600. 2001 JAGUAR XKR. 2015 LEXUS RX350. 2003 CEVY SIVERADO
Battery discharge

I have a MB SL600, 2004. This model has two
batteries a starting battery, and a convenience battery for the accessories. The problem that I am experiencing is that, even thoe I have a battery minder, on the convenience battery, it will randomly discharge down to very low voltage.
l have tried several different battery minders, all with the same results. Has anyone else had the same problem? If so is there a fix? Or what is the problem?
Thanks Brian T
Old 11-29-2019, 05:32 PM
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'09 S600, (2) R129 300SLs, '03 SL500, '03 SL55
What do you consider to be a very low voltage? How much amperage does your battery minder deliver?

Regardless of the answers to those questions, it seems your battery minder or convenience battery are defective.



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