How To Know When Car Battery Is Charged. Remove any metal jewelry you may be wearing. Set your battery charger.
The gauge may show a high charging rate at first but this drops gradually as the battery becomes charged. A simple but relatively inaccurate way is to check the battery voltage. Some models have a gauge or dial to read the charge level.
Attached to chassis of the vehicle.
The reading of the dial will be done during the recharge of the latter. The terminals will be marked and -. This will likely be black with a minus sign. Each battery depending on its type capacity voltage and current output may have.
