Mercedes-Benz C-Class (W205) 2015 - 2021 Owners Manual > Battery (vehicle): Notes on starting assistance and on charging
the 12 V battery
Vehicles with a lithium-ion battery When charging the battery and during starting assistance, always use the jump-start connection point in the engine compartment. NOTE Damage to the battery from overvoltage When charging using a battery charger without a maximum charging voltage, the battery or the ...