approx 6hrs
It takes about 6 hours to charge a 7.4 volt battery when using a 5 volt charge. For the best results try charging it over night.
3 hours
How long does it take for an 18v battery to charge
8 hours
for a rechargable 9 volt, about 4 hours for full battery.
Around 4 hours on a dead battery.
About 2 hours if the battery is 100% discharged.
Depends entirely on how much current you use to charge it.
You do not charge a 7.2 volt battery with a 9.6 volt charger period unless you want to ruin the battery. You charge it with a 7.2 volt charger.
A .6 amp charger is a trickle charger. It would take days to charge a dead 12 volt battery with this charger. You need a 10 amp charger which will charge it in a couple of hours.
14 hours approx
With a charger specifically designed to charge this battery.