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Home >> BMW >> 2019 >> X3 M40i >> Repair and Diagnosis >> External Pages >> Different car >> Section 576 (Functional Descriptions - F25 - Charging System, Anti-Theft, Body Electrical Systems) >> Charging System - Functional Description >> Lithium ion battery >> System functions >> Starting capability

Starting capability

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The starting capability of the lithium ion battery is calculated by power management and displayed. The state of charge does not drop below 20 % in the process due to reasons of safety.

In temperatures above 10 °C an engine start can actually be successful in case of low states of charge as well. The following is an example of a new lithium ion battery at 25 °C.

Fig 1: Starting Capability Battery Voltage Curve
G09909232Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Battery voltage in volts
2 Starting capability in percent
3 Battery voltage curve
4 State of charge curve