Battery Charger cum AC adaptor that works for 6 and12v requirement. The manual chargers need to be monitored and should be switched off after charging the batteries. To monitor the charging status, we had included the volt display on top of the charger. Upon pressing the push button down, you can watch the present volts in the connected battery. Usually, it takes 4-6 hrs of charging time to power up the batteries however it is entirely depending on the quality of the battery and the discharge status of the battery.