61 12... Notes regarding the battery electronics (lithium ion battery)

NOTE: The basic function of the battery electronics of the lithium ion battery correspond with that of the intelligent battery sensor (IBS) of an AGM battery.

In contrast to the IBS, the electronics are a fixed component of the battery. In the event of a defect, the entire lithium ion battery must therefore be replaced.

Additionally, the electronics regulate the battery management that is required for lithium ion batteries, such as the adjustment of cell voltage or activation of the internal disconnect switch.

NOTE: Do not connect the trickle charger to the 12 V charging socket!

The 12 V charging socket is supplied with voltage by the rear power distribution box via relay. This relay drops out after terminal 15 OFF. This means that a trickle charger connected at the 12 V charging socket will be disconnected from the battery. Only charge the battery via the jump start terminal point. Only then can the voltage supply be registered by the vehicle.

IMPORTANT: Danger of destruction in event of mechanical strain!

Do not modify the grounding cable. The ground cable also serves heat dissipation.
Do not use force when disconnecting the pole shoe from the battery terminal:
- Do not pull on the ground cable.
- Do not place any tools under the terminal clip to lever off the pole shoe.
Use a torque wrench and set tightening torque in accordance with repair instructions.
Use the battery size (capacity) installed as standard upon battery replacement.
Register battery replacement via Service functions in diagnosis system.
Delete fault code entries in the Digital Engine Electronics (DME) associated with battery replacement.
Always proceed in accordance with the repair instructions.

NOTE: The battery can be drained in spite of trouble-free battery electronics !

A lithium ion battery can be drained (e.g. with lights or radio switched on) even when the battery electronics function perfectly in conjunction with power management.
In the event of a corresponding message from the energy diagnosis test module, replace the lithium ion battery!