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Possible battery issue

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Old Jun 7, 2013 | 03:59 PM
  #1  
luisjr's Avatar
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SL 55
Possible battery issue

During the last week I've noticed that my c300 is starting kind of slow. Today twice it has not started, I've had to turn the switch to off and then start it again. I assume that my battery is dying.

If anyone has had this issue please let me know.

If it is the battery let me know which brands do you recommend

Thanks
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Old Jun 7, 2013 | 04:23 PM
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From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
Originally Posted by luisjr
During the last week I've noticed that my c300 is starting kind of slow. Today twice it has not started, I've had to turn the switch to off and then start it again. I assume that my battery is dying.

If anyone has had this issue please let me know.

If it is the battery let me know which brands do you recommend

Thanks
It may be the battery but check the alternator before simply dropping in a new battery. Most parts stores have the equipment to check if your car is charging properly.
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Old Jun 7, 2013 | 05:00 PM
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SL 55
I will not discard the alternator; but I think that if the issue was with the alternator it wouldnt start by now, because this issue has been happening for over a week.
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Old Jun 9, 2013 | 06:24 AM
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Best to have a battery load tested & the alternator output checked.

The replacement battery should be a AGM ie Absorbed Glass Matt type with similar amp hours to what it is replacing.
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Old Jun 9, 2013 | 08:50 AM
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From: Bay Area, CA
2011 C300 Sport, P1, MM, Wood, Heated FS, DIY rearview camera.
You can read the battery voltage before you start. I don't know other MBs but C300 is slow compared to my other cars. Lowest voltage I observed is 11.4V and it starts with no problem.

Quickest start of my other cars is Maxima and QX4 (daily drive). It takes no time.
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