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

MODEL ALL 

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
• Labeling: VRLA battery or AGM battery
• Non-detachable covers (A)
  Fig 1: Identifying AGM Battery And Non-Detachable Covers

  Courtesy of MERCEDES-BENZ USA

AGM battery structure 

Instead of the acid in a conventional battery, a conductive fabric (bonded fiber) 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 AGM Battery Structure

  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.