These batteries are often equipped with a magic eye. The magic
eye provides information concerning the level of the electrolyte
and the charge state of the battery.
1.2.3 Absorbent glass mat (AGM) battery
Maintenance-free battery with a contained electrolyte.
Lead-acid battery where the electrolyte is contained within a mi‐
croscopic glass mat (AGM). The battery is sealed and fitted with
valves.
AGM is the abbreviation for Absorbent Glass Mat.
Note
♦
The procedure for checking and testing gel and absorbent
glass mat batteries is identical.
♦
Always replace an absorbent glass mat battery with another
absorbent glass mat battery.
1.2.4 Gel battery
Maintenance-free battery with a contained electrolyte.
Lead-acid battery where the electrolyte is contained within a gel.
The battery is sealed and fitted with valves.
Note
♦
The procedure for checking and testing gel and absorbent
glass mat batteries is identical.
♦
Currently gel batteries are only used in motor homes/campers
at Volkswagen.
1.3 Warning notices and safety regulations
1.3.1 Dangers when handling vehicle batter‐
ies
Recognition and avoidance of dangers
Batteries can be dangerous. These dangers can be avoided when
the warnings on the battery and in the owners/instruction manual
and in ELSA are observed.
Jetta 2005 ➤ , Bora 2006 ➤
Electrical System - Edition 05.2005
2 Rep. Gr.27 - Starter, current supply, CC