61 20... Charging battery
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If a normal or quick charger is used to charge the battery, the battery must be disconnected from the vehicle electrical system and removed. This prevents damage to paintwork and upholstery.
Ideally, battery charging is performed with BMW-approved charging computers.
IMPORTANT:
In order to prevent malfunctions on the intelligent battery sensor (IBS), the charging terminals in the engine compartment must be used without fail on vehicles with IBS (from E60). On other vehicles, we recommend the charging terminals in the engine compartment are used.
IMPORTANT:
Before charging the battery while it is installed, first carry out a closed-circuit current test. If here the voltage is 10 V or less, one or more of the cells may be faulty or the entire battery may already be damaged. In this case, always remove the battery as escaping gases during charging could damage the interior equipment and trim. Attempt to regenerate faulty cells with low charging current.
If necessary, open existing seal plugs on the individual cells.