Starter, Current Supply, Cc; Battery; Fundamentals For Batteries; Types Of Battery - Volkswagen Jetta 2005 Workshop Manual

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Starter, current supply, CC

1

Battery

WARNING
Danger of injury! Observe warning notices and safety regula‐
tions ⇒ page 2 !
Caution
To prevent damage to the battery and vehicle, the following
should be observed concerning types of battery
1.1

Fundamentals for batteries

To ensure long use of the battery, the battery must be checked,
serviced and maintained as per instructions in this Manual.
Apart from supplying energy for starting the engine, the battery
has other tasks: it acts as a buffer and supplies electrical energy
to the complete vehicle electrical system.
Note
Observe ⇒ Self-study programme No. 234 ; vehicle batteries .
1.2

Types of battery

1.2.1 Low maintenance battery
Low maintenance battery with liquid electrolyte (wet battery).
These batteries are recognised by the removable cell plugs.
Lead-acid battery, electrolyte level must be checked regularly and
topped-up with distilled water as required.
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.
1.2.2 Maintenance-free battery
Maintenance-free battery with liquid electrolyte (wet battery).
These batteries have a cover over the cells instead of cell plugs.
The cover seals the battery after initial filling during production.
Caution
Never under any circumstances remove the cover for the bat‐
tery cells. The battery housing will be damaged and the battery
is therefore unusable.
Lead-acid battery, where electrolyte need not be topped-up with
distilled water under normal conditions. This term is normally used
for batteries with a predetermined amount of electrolyte.
Jetta 2005 ➤ , Bora 2006 ➤
Electrical System - Edition 05.2005
⇒ page 1 .
1
1. Battery