A GTR has landed in my garage!
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MBWorld God!
Joined: Dec 2019
Posts: 32,342
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In case the other forum member still need the information, you can find it right below "Made in Germany" > Build > and format is month/year for example 09/17
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Having your trickle charger plugged in for as long as possible when car is Parked will 'condition' the battery to optimal capacitance/function, and more importantly, will extend its life significantly:
https://mbworld.org/forums/coupe-roa...ml#post9237653
@MBNRG I didn't notice the plaque you're talking about, but I'll take a picture and post it here
(PS - The number "589" to the left of Month/Date in photo below corresponds to the MB Paint Code for that specific finish, so your corresponding paint code will be helpful to know if/when you need MB touch up paint - recommend the official MB OEM paint pen, instead of the plethora of aftermarket provider products)
Last edited by MBNRG; May 15, 2026 at 01:51 PM.
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Please read this post below by our Engineering colleague. These vehicle Li batteries have somewhat different chemical composition, and electrical properties.
Having your trickle charger plugged in for as long as possible when car is Parked will 'condition' the battery to optimal capacitance/function, and more importantly, will extend its life significantly:
https://mbworld.org/forums/coupe-roa...ml#post9237653
This is the referenced plaque as seen below, at driver's side door sill, with Month/Date circled in Yellow. Curious what is your Month/Date?
https://cimg3.ibsrv.net/gimg/www.mbw...7fbaad6c74.jpg
Having your trickle charger plugged in for as long as possible when car is Parked will 'condition' the battery to optimal capacitance/function, and more importantly, will extend its life significantly:
https://mbworld.org/forums/coupe-roa...ml#post9237653
This is the referenced plaque as seen below, at driver's side door sill, with Month/Date circled in Yellow. Curious what is your Month/Date?
https://cimg3.ibsrv.net/gimg/www.mbw...7fbaad6c74.jpg
Thread Starter
Member
Joined: Feb 2025
Posts: 163
Likes: 29
From: Rome, Italy
AMG GTR 2021 (Euro version)
Please read this post below by our Engineering colleague. These vehicle Li batteries have somewhat different chemical composition, and electrical properties.
Having your trickle charger plugged in for as long as possible when car is Parked will 'condition' the battery to optimal capacitance/function, and more importantly, will extend its life significantly:
https://mbworld.org/forums/coupe-roa...ml#post9237653
Having your trickle charger plugged in for as long as possible when car is Parked will 'condition' the battery to optimal capacitance/function, and more importantly, will extend its life significantly:
https://mbworld.org/forums/coupe-roa...ml#post9237653
This is the referenced plaque as seen below, at driver's side door sill, with Month/Date circled in Yellow. Curious what is your Month/Date?
(PS - The number "589" to the left of Month/Date in photo below corresponds to the MB Paint Code for that specific finish, so your corresponding paint code will be helpful to know if/when you need MB touch up paint - recommend the official MB OEM paint pen, instead of the plethora of aftermarket provider products)
(PS - The number "589" to the left of Month/Date in photo below corresponds to the MB Paint Code for that specific finish, so your corresponding paint code will be helpful to know if/when you need MB touch up paint - recommend the official MB OEM paint pen, instead of the plethora of aftermarket provider products)
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From: San Francisco Bay Area
2019 C63CS
MBWorld God!
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As for the sticker and the manufacture date, the best way is probably decode the VIN on a site like lastvin or something and read the date there, if still curious.
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FWIW, my GTR is always put on the OEM charger when in the garage and it's been sitting for about a week that way, right now. I just went out and checked the battery voltage and it's sitting at 13.2 VDC which is generally considered to be a 70-80% charge for a Li battery, probably closer to the 80% since some electronics would have been activated by unlocking the rear hatch (i.e., so there was some electrical load).
When I checked the battery voltage above, I also decided to press/hold the button to initiate a reconditioning (I think it was Stenzel who suggested this should be done intermittently).
Today I rechecked the voltage (still on OEM charger) and found the voltage was at 13.4 VDC under the same conditions (i.e., hatch had been opened so there was some load from electronics). That reading tends to correlate nicely with the previously mentioned information provided by G.P in this posting:
https://mbworld.org/forums/coupe-roa...ml#post9237653
The "moral of the story" seems to be that Mercedes-AMG recognizes that many of these cars will not be daily deivers and will sit for extended periods and they actually do know what they're doing with the OEM (CTEK) maintenance charger provided with the GT models. $;-))
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Joined: Dec 2019
Posts: 32,342
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An Update:
When I checked the battery voltage above, I also decided to press/hold the button to initiate a reconditioning (I think it was Stenzel who suggested this should be done intermittently).
Today I rechecked the voltage (still on OEM charger) and found the voltage was at 13.4 VDC under the same conditions (i.e., hatch had been opened so there was some load from electronics). That reading tends to correlate nicely with the previously mentioned information provided by G.P in this posting:
https://mbworld.org/forums/coupe-roa...ml#post9237653
The "moral of the story" seems to be that Mercedes-AMG recognizes that many of these cars will not be daily deivers and will sit for extended periods and they actually do know what they're doing with the OEM (CTEK) maintenance charger provided with the GT models. $;-))
When I checked the battery voltage above, I also decided to press/hold the button to initiate a reconditioning (I think it was Stenzel who suggested this should be done intermittently).
Today I rechecked the voltage (still on OEM charger) and found the voltage was at 13.4 VDC under the same conditions (i.e., hatch had been opened so there was some load from electronics). That reading tends to correlate nicely with the previously mentioned information provided by G.P in this posting:
https://mbworld.org/forums/coupe-roa...ml#post9237653
The "moral of the story" seems to be that Mercedes-AMG recognizes that many of these cars will not be daily deivers and will sit for extended periods and they actually do know what they're doing with the OEM (CTEK) maintenance charger provided with the GT models. $;-))
Junior Member
Joined: May 2021
Posts: 57
Likes: 34
2020 AMG GT R
An Update:
When I checked the battery voltage above, I also decided to press/hold the button to initiate a reconditioning (I think it was Stenzel who suggested this should be done intermittently).
Today I rechecked the voltage (still on OEM charger) and found the voltage was at 13.4 VDC under the same conditions (i.e., hatch had been opened so there was some load from electronics). That reading tends to correlate nicely with the previously mentioned information provided by G.P in this posting:
https://mbworld.org/forums/coupe-roa...ml#post9237653
The "moral of the story" seems to be that Mercedes-AMG recognizes that many of these cars will not be daily deivers and will sit for extended periods and they actually do know what they're doing with the OEM (CTEK) maintenance charger provided with the GT models. $;-))
When I checked the battery voltage above, I also decided to press/hold the button to initiate a reconditioning (I think it was Stenzel who suggested this should be done intermittently).
Today I rechecked the voltage (still on OEM charger) and found the voltage was at 13.4 VDC under the same conditions (i.e., hatch had been opened so there was some load from electronics). That reading tends to correlate nicely with the previously mentioned information provided by G.P in this posting:
https://mbworld.org/forums/coupe-roa...ml#post9237653
The "moral of the story" seems to be that Mercedes-AMG recognizes that many of these cars will not be daily deivers and will sit for extended periods and they actually do know what they're doing with the OEM (CTEK) maintenance charger provided with the GT models. $;-))
