Volkswagen Golf/Jetta 2 manual

Battery - charging
Starting and charging systems / Battery - charging


Warning: The battery will be emitting significant quantities of (highly-inflammable) hydrogen gas during charging and for approximately 15 minutes afterwards. Do not allow sparks or naked flames near the battery or it may explode.

Caution: Specially rapid УboostФ charges which are claimed to restore the power of a battery in 1 to 2 hours are not recommended as they can cause serious damage to the battery plates through overheating
Caution: If the battery is being charged from an external power source whilst the battery is fitted in the vehicle, both battery leads must be disconnected to prevent damage to the electrical circuits.

1 In winter when heavy demand is placed on the battery (starting from cold and using more electrical equipment), it is a good idea occasionally to have the battery fully charged from an external source. The charge rate will depend on battery type. For most owners however, the best method will be to use a trickle-charger overnight, charging at a rate of 1.5 amps.

2 Rapid `boostТ charges which are claimed to restore the power of the battery in 1 to 2 hours are not recommended, as they can cause serious damage to the battery plates through overheating and may cause a sealed battery to explode.

3 Ideally, the battery should be removed from the vehicle before charging and moved to a well-ventilated area.

4 Continue to charge the battery until all cells are gassing vigorously and no further rise in specific gravity or increase in no-load voltage is noted over a four-hour period. When charging is complete, turn the charger off before disconnecting its leads from the battery.


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