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61 21 028 Charging battery

WARNING: Read and comply with VEHICLE BATTERY SAFETY INSTRUCTIONS .
IMPORTANT: Lead-acid battery, AGM battery:
To prevent the intelligent battery sensor from malfunctioning, use the charging points in the engine compartment.

Observe instructions on INTELLIGENT BATTERY SENSOR/BATTERY ELECTRONICS. 

NOTE: Use BMW-recommended charging computers* to charge the battery.
*Sourcing reference applicable BMW Workshop Equipment Catalog

Pay attention when charging the lithium ion battery!

Existing chargers that are designed for the lead-acid or AGM battery generate a charging voltage that is too high for the lithium-ion battery.

If the charging voltage is too high, the electronic disconnect switch of the Li-ion battery can open, which generates a CCM message in the instrument cluster.

Before charging a lithium ion battery, adjust the CHARGING VOLTAGE OF EXISTING CHARGER ADAPTERS ONCE 

Follow notes on lithium ion battery.