Hardwired trickle charger

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Mar 30, 2018 | 12:35 PM
  #1  
muneereesa's Avatar
Thread Starter
Newbie
 
Joined: Mar 2018
Posts: 4
Likes: 0
AMG GT C
Hardwired trickle charger

Hi,

Does anyone have experience with hardwiring the MB provided trickle charger on the GT vehicles directly to the Li ion starter battery under the hood? It came this way from the dealer on a new vehicle and there is a " Battery not charged" warning sign in red on the instrument panel despite charging the battery to full charge.
Reply
Old Mar 30, 2018 | 03:07 PM
  #2  
thecutter64's Avatar
MBWorld Fanatic!
 
Joined: Jul 2017
Posts: 1,075
Likes: 220
2018 Solarbeam Yellow AMG GTS
The provided 12volt charger has an adapter to plug in the 12volt socket in the boot NOT. The cigarette lighter socket. That power shuts down when the car is off.

Under the hood. Attach red clip to red terminal on battery, Black on grounding nut.

If using eyelet adapters, loosen nuts on battery, slide eyelets over corresponding color over corresponding terminal and replace nuts to secure. This is more permanent solution . Just disconnect cable at connector when done and leave the short cable attached and in the engine bay.
Reply
Old Mar 30, 2018 | 04:16 PM
  #3  
muneereesa's Avatar
Thread Starter
Newbie
 
Joined: Mar 2018
Posts: 4
Likes: 0
AMG GT C
It's already wired under the hood with eyelets and I charged it to 100%, and I still get the " battery not charged" message
Reply
Old Mar 30, 2018 | 04:22 PM
  #4  
thecutter64's Avatar
MBWorld Fanatic!
 
Joined: Jul 2017
Posts: 1,075
Likes: 220
2018 Solarbeam Yellow AMG GTS
Does the engine start?
did you push the connectors tight so that the two cables snap together ?
Reply
Old Mar 30, 2018 | 07:25 PM
  #5  
muneereesa's Avatar
Thread Starter
Newbie
 
Joined: Mar 2018
Posts: 4
Likes: 0
AMG GT C
The engine starts fine. Drives without any problem.

The connectors were tight. The green light showing full charge was in after an overnight charge.

Could it be a faulty alternator? I mean the car is brand new. It's baffling.
Reply
Old Mar 31, 2018 | 05:01 PM
  #6  
thebishman's Avatar
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2008
Posts: 2,524
Likes: 1,007
From: Overland Park, KS
‘24 BMW iX M60
Straight back to the dealer if I were you. I’m sure it’s something minor.
Reply
Old Mar 31, 2018 | 05:22 PM
  #7  
muneereesa's Avatar
Thread Starter
Newbie
 
Joined: Mar 2018
Posts: 4
Likes: 0
AMG GT C
I eventually figured it out.

I did a second charge using the cigarette adapter through the trunk. It appeared to reset the battery warning.

All is running well.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 06:25 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE