Notes on AGM battery - AH54.10-P-0002-01A

All models

As of Autumn 2000 new batteries with AGM technology will be used.

The external differentiation features between these batteries and conventional batteries are:

Black housing
VRLA battery labeling
Non-detachable covers (A)

Fig 1: Identifying Non Detachable Battery Covers

Courtesy of MERCEDES-BENZ USA

AGM battery structure

Instead of the acid in a conventional battery, a conductive fabric (bonded fiber) (V) is used.

Special properties:

High cycle strength (long service life)
Improved cold starting characteristics
No escaping acid if housing damaged
Improved deep-discharge resistance
Absolutely maintenance-free

Fig 2: Identifying Conductive Fabric (Bonded Fiber)

Courtesy of MERCEDES-BENZ USA

Distinguishing features

No stop plugs

No acid level markings
No externally vented stop plugs
Information plate on the battery

If the battery is replaced, the vent hose with an elbow to one side of the battery and the stop plugs on the other side of the battery must be pressed in.