12v Ups Battery Charger Circuit. If it s an ups the inclusion of a battery charger circuit becomes imperative. You can easily make this auto cut off charger circuit for charging a 12v battery or a 6v battery.
The charging will automatically stop when the voltage across the battery crosses the preset cut off voltage. But this circuit is used as a 12v ups thus it is actually a power supply with battery back up. 12v battery charger circuit with overcharge protection this 12 battery charger circuit provides the automatic cut off facility when the battery gets fully charged.
Before the use of this circuit you need to adjust the cut off voltage range for the auto cut.
Keeping the low cost and simplicity of the design in mind a very simple yet reasonably accurate battery charger design has been incorporated in this uninterruptible power supply circuit. As the battery gets charged the terminal voltage begins increasing gradually until it reaches the set 14 2 v. 12v battery charger circuit with overcharge protection this 12 battery charger circuit provides the automatic cut off facility when the battery gets fully charged. A 12v battery is normally recharged at 14 2 v or 2 40v per cell.
