Hi,
I read you OP as though you were asking if there was a way with VB?
it would be impractical to interface the batter charger on a Visual Basic program, so is there any way to do this?[/I]
You could use a simple PIC, that has a 10bit ADC and say an internal osc.
Write a program to monitor the Vbty state and switch OFF a relay.
You could also use a OPA comparator to monitor the Vbty and switch OFF the
charge to the battery.
A timer is not the best way to go, as you dont know how long you will have set the timer for, the battery may not be fully discharged??