If your charger has an automatic mode with voltages >14.8 V, the battery must be disconnected from the on-board electronics or removed from the vehicle altogether. ![]() 12.3V! SORRY, no more battery is charged in driving mode!įully automatic chargers (charging voltage limited to 14.8 V) are well suited for charging the battery installed in a vehicle. At the same time, many power consumers are in operation, such as the rear window heater, seat heater, auxiliary heater and some others more! We are now completely ignoring the Economy (ECO) driving mode, which partially reduces the charging voltage to approx. Please bear in mind: Especially in winter operation, below 0 degrees Celsius ambient temperature, the battery hardly absorbs any more charging current. A charge deficit can occur relatively quickly in the start-stop-car and lead to partial or full discharge, even with an almost new battery, and starting problems are then naturally pre-programmed. In older cars without start-stop function, the battery was always charged to 100% by the alternator. If recuperation is also operated in the start-stop vehicle (recovery of braking energy), the AGM or EFB battery works artificially at a lower state of charge of approx. In start-stop cars it is essential to observe the following We also recommend the battery tester so that you can periodically check the battery voltage. ![]()
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