full charging indicator circuit

[abdulwahababid]

I want to make a full charging indicator circuit for battery of 12v, 40A-50A.

Plz share some sort of efficient and small circuit..

 

[tpetar]

I want to make a full charging indicator circuit for battery of 12v, 40A-50A.

Plz share some sort of efficient and small circuit..

Battery charge level is based on voltage measurement.

- Without charger (battery is not on charger) battery is full if voltage shows 12,73V.

- Battery on float charger 13,5V-13,8V (on charger, and can stay in that state long, voltage depends from temp).

- One cycle charging and turn off 14,2V (when reach 14,2V battery is removed from charger, or charger is turned off).

- - - Updated - - -

You can make voltage measurement with led bars, single leds, 7-seg, LCD,...

 

[abdulwahababid]

something like this

 

[tpetar]

Yes you can use similar with led bars, 7-seg, LCD,...