The charging time for a 3.7-volt battery depends on its capacity (measured in milliamp hours, or mAh) and the current of the charger used. For example, a 1000mAh battery charged with a 500mA charger would take approximately 2 hours to fully charge. However, charging times can vary based on the specific battery chemistry and charger efficiency. Always refer to the manufacturer's specifications for the most accurate charging times.
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
approx 6hrs
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