BMW to showcase 4 production plug-in hybrids at IAA in Frankfurt; new 225xe
Green Car Congress
SEPTEMBER 3, 2015
In addition, the combustion engine uses the integrated high-voltage starter-generator to charge the batteries during a journey, if required. SAVE BATTERY mode allows the battery’s energy stores to be deliberately maintained—or increased again if the charge level has dropped below 50%. kWh lithium-ion battery.
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