Battery Replacement / lithium or AGM?
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C63S AMG Sedan
Battery Replacement / lithium or AGM?
Where can i find after market Lithium battery for AMG GTS 2016? Or can i put AGM on it? Cause i had a old AGM and i tried a new AGM and i have the same code again. Code : Stop car, see owner manual.
Some people say AGM is fine other says its not? There is 1 wire not plugged with my current AGM one. dealer says it goes on the oem lithium battery
Some people say AGM is fine other says its not? There is 1 wire not plugged with my current AGM one. dealer says it goes on the oem lithium battery
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Joined: Jun 2021
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From: Virginia
C63s
Hey Kesmarc, you can have the error that the AGM battery is giving you coded out if you choose not to go with OEM lithium. My 2016 GTS came with AGM that the previous owner had coded, so no error/CEL. I believe even if you install another brand of lithium battery, you’ll still get the error as they won’t have that separate plug for the wire that oem has.
I believe the dealer can code your car not to look for the oem battery and if not, Benz Ninja can help.
I believe the dealer can code your car not to look for the oem battery and if not, Benz Ninja can help.
Thread Starter
Junior Member
Joined: Jun 2017
Posts: 55
Likes: 1
C63S AMG Sedan
Hey Kesmarc, you can have the error that the AGM battery is giving you coded out if you choose not to go with OEM lithium. My 2016 GTS came with AGM that the previous owner had coded, so no error/CEL. I believe even if you install another brand of lithium battery, you’ll still get the error as they won’t have that separate plug for the wire that oem has.
I believe the dealer can code your car not to look for the oem battery and if not, Benz Ninja can help.
I believe the dealer can code your car not to look for the oem battery and if not, Benz Ninja can help.
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2019 C63CS
Going from lithium to AGM is perhaps a less problematic move as AGM batteries aren't so picky about how they are being charged and don't have a propensity to spontaneously combust if they are being charged the wrong way. However, keep in mind that the different battery types have very different charging and voltage profiles. Lithium batteries as probably everybody knows by now don't like to be fully charged, but if you do then charging them from 80 to 100% has to be done much slower. So the charger in your car is programmed to charge a lithium battery and keep it healthy. If you replace it with an AGM battery, the car will continue to charge it like a lithium battery. It shouldn't hurt the AGM battery as opposed the other way around, but it won't charge it fully for example and instead keeps it at a partial charge. Lithium batteries tend to have extra buffer capacity, so that partially charging them still gives you enough capacity. AGM batteries don't have that, because they are ok with being fully charged. It's not for nothing that car battery maintainers have separate modes for Lead Acid, AGM and Lithium batteries.
Last edited by superswiss; Aug 8, 2024 at 03:21 PM.
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2019 AMG GTC Solar Beam Yellow
Going from lithium to AGM is perhaps a less problematic move as AGM batteries aren't so picky about how they are being charged and don't have a propensity to spontaneously combust if they are being charged the wrong way. However, keep in mind that the different battery types have very different charging and voltage profiles. Lithium batteries as probably everybody knows by now don't like to be fully charged, but if you do then charging them from 80 to 100% has to be done much slower. So the charger in your car is programmed to charge a lithium battery and keep it healthy. If you replace it with an AGM battery, the car will continue to charge it like a lithium battery. It shouldn't hurt the AGM battery as opposed the other way around, but it won't charge it fully for example and instead keeps it at a partial charge. Lithium batteries tend to have extra buffer capacity, so that partially charging them still gives you enough capacity. AGM batteries don't have that, because they are ok with being fully charged. It's not for nothing that car battery maintainers have separate modes for Lead Acid, AGM and Lithium batteries.
Out Of Control!!
Joined: Nov 2018
Posts: 11,403
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From: San Francisco Bay Area
2019 C63CS
As long as you use the OEM provided charger you'll be fine. That charger is specifically for lithium batteries. It will maintain the lithium battery at a healthy charge level.
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2019 AMG GTC Solar Beam Yellow
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