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Home >> BMW >> 2011 >> 335i 2D Convertible, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 30 (General Electrical System - Repair - E90) >> Battery Charging And Replacement >> 61 21 028 Charge battery

61 21 028 Charge battery

WARNING: This page is about a different variant/trim than selected.
IMPORTANT: Lead-acid/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 BMW Workshop Equipment Catalogue

Pay attention when charging the lithium ion battery! 

Risk of damage! 

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 will result in damage to the lithium ion battery! 

Therefore the charging voltage of the existing chargers must be reduced before charging a lithium ion battery!