61 21 028 Charge 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 .
Pay attention when charging the lithium ion battery!
The charging voltage that is generated by existing chargers that are designed for the lead-acid or AGM battery is too high for the lithium ion battery.
This excessive charging voltage may in some cases result in that the separating switch of the lithium ion battery will be opened. This does not damage the lithium ion battery . The separator switch will close again when a charging voltage of < 14 V is applied at the battery terminals.
Before charging a lithium ion battery, adjust the charging voltage of existing charger adapters once.
Overview of Activities
Key processes
- Charge battery
Additional Information
General information
Key processes
- Charge battery
TECHNICAL INFORMATION
Observe the notes on handling the vehicle battery.
For more information see:
61 00... Safety instructions for handling vehicle battery
61 00... Notes for disconnecting and connecting battery
61 12... Information on intelligent battery sensor (IBS)
- Charging lead-acid batteries and AGM batteries
- Connect to a charger approved by BMW.
- If the battery is charged while it is still installed: always connect the charger to the jump start terminal point in the engine compartment.
- Fully charge the battery.
The battery is fully loaded once the charge current drops below a certain value:
Battery temperature Charge current 15° C - 25° C <2.5 A < 15°C <1.5 A - Disconnect the charger after having completed charging.
- Charge lithium ion battery
TECHNICAL INFORMATION
Comply with notes on handling lithium ion batteries.
- Adapt the charging voltage on the charger to the lithium ion batteries.
Too high charging voltage can lead to opening of the electronic disconnect switch.
- Connect to a charger approved by BMW.
- Fully charge the battery.
- Disconnect the charger after having completed charging.