Trickle Chaeger

May 6, 2026 | 04:14 AM

frostsdad

Thread Starter

Member

Joined: May 2014

Posts: 152

Likes: 26

From: Maryland (Washington DC market suburbs)

2024 GLS450W4, 2016 S550 4MATIC (W222), 1972 350SL (R107), 2012 GLK350 (X204)

Trickle Chaeger

Does anyone know if Mercedes-Benz’s battery maintainer/trickle charger 0009820221 is safe to use on a W222? I don’t drive much as I used to as I work from home. Also, I travel quite a bit for work - and that’s via car service or plane. This adds up to cars sitting garaged without a driver or place to go. Which is ripe for batteries that are slowly discharging until i am able to get behind the wheel.

I have had code P0348 “camshaft sensor high in xyz bank” pop up a few times recently (I understand low voltage can cause these codes to appear). Also, I’ve been receiving the message to start the engine (so alternator can do its work) after periods of non-use.

All of that led to the purchase of Mercedes charger above. I bought it a few months ago and haven’t used it. it was the only MB branded charger, which appeared to be a very respectable CTEK in Mercedes’ clothing. Reading some recent posts and want to ensure I’m safe to use before I go and hook up the alligator clamps to my battery.

Thanks in advance.

Last edited by frostsdad; May 6, 2026 at 05:12 AM.

May 6, 2026 | 04:59 AM

Kent agent

Member

Joined: Dec 2024

Posts: 84

Likes: 13

From: Uppsala

S600 w222

CTEC chargers are among the best you can have running with it

May 6, 2026 | 09:10 AM

NbyNW

Senior Member

Joined: Jun 2007

Posts: 457

Likes: 253

From: SD

Various

It seems most car branded trickle chargers are not the best option unless you can find a number on it to match.They seem to go with basic units.

A good CTEC is fine and I’ve always used Deltran Battery Tenders on my cars… from Fcars, MBs, BMWs, Either is a good choice.

May 6, 2026 | 09:22 AM

W205C43PFL

MBWorld God!

Joined: Dec 2019

Posts: 32,341

Likes: 6,318

Just get the appropriate charger for AGM or Lithium Ion depending on what you have, the W222 likely has AGM so you can get the mxs 5.0 or the noco 5 (which the latter btw supports both battery types): https://mbworld.org/forums/g-class-w...enius-5-a.html
As for the one OP already have if it charges the right battery type and the W222 has the right battery type I don't see why it won't be compatible.

May 6, 2026 | 10:04 AM

subterFUSE

Member

Joined: Jan 2016

Posts: 110

Likes: 33

From: Mt Pleasant, SC

2018 S560

C-Tek is the way to go. I have my W222 on a C-Tek in my garage at this very moment.

May 6, 2026 | 04:11 PM

as.thompson

Super Member

Joined: Jul 2007

Posts: 743

Likes: 228

From: Santa Barbara, CA

S550C4, Porsche Cayenne

Quote:

Originally Posted by NbyNW

It seems most car branded trickle chargers are not the best option unless you can find a number on it to match.They seem to go with basic units.
A good CTEC is fine and I’ve always used Deltran Battery Tenders on my cars… from Fcars, MBs, BMWs, Either is a good choice.

I have a MBZ branded charger and as far as I can determine it is a CTEK with a MBZ label. Price was about the same as the same CTEK. SO far it does the job perfectly.

May 6, 2026 | 05:03 PM

Ocean2059

Newbie

Joined: Apr 2026

Posts: 6

Likes: 4

From: Fairfax, Virginia

2020 S560 4Matic

I use a CTEK (Model 40-206 MXS 5.0) for my S560 and other vehicles. It can change AGM battery. If you get one with the MBZ labor, make sure it can also change AGM.