CLK Battery charging using a trickle charger

MykhailoM

Member
Joined
Mar 9, 2018
Messages
18
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2
Location
Manchester
Your Mercedes
Mercedes Benz CLS W219 Grand Edition
Hi fellow Merc owners.

Will it be OK to charge a battery in Mercedes CLK 220 CDI 2.1L without disconnecting positive & negative contacts or will I be better off just disconnect the ground (-) only?

Thanks
Mykhailo
 

grahamcol

Senior Member
Joined
Jan 12, 2009
Messages
1,559
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363
Location
West Midlands
Your Mercedes
2001 SLK230, 2007 CLK220 CDI
Hi and welcome.
You should be fine as long as you use a modern electronically controlled charger such as a Ctek or similar. I use one very often on both my C class and SLK and have never had a problem.
 

mikestrivens

Senior Member
Joined
Nov 21, 2008
Messages
2,715
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146
Location
Stockport
Your Mercedes
1995 W124 320TE, 1998 R129 SL500, 2016 Triumph Tiger 800 XCx
Most of us keep a Ctek or similar optimiser permanently connected when in the garage. It saves a great deal of faf when you come to use the vehicle.
 

LostKiwi

Senior Member
Joined
Aug 25, 2006
Messages
26,456
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15,903
Location
Midlands / Charente-Maritime
Your Mercedes
'93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
As above. Two of my cars have trickle chargers permanently connected all winter. Malcolm always had his on a trickle charger when it wasn't in use.
 

rifiki

Senior Member
Joined
Dec 29, 2015
Messages
450
Reaction score
155
Location
Worksop
Your Mercedes
CLK W209 W121 190B
Have hot wired Ctek to my W209 CLK. If you use the ‘recon mode’ disconnect the battery.
 


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