3 hours
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.
approx 6hrs
8 hours
Depends entirely on how much current you use to charge it.
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.
You cannot charge 108.5 volts with a 12 volt charger. What are you charging that has that kind of voltage?
How long does it take for an 18v battery to charge
Yes it will, in the 12-volt position. But with the information given in the question, we can't estimate how long it will take.
Around 4 hours on a dead battery.
About 2 hours if the battery is 100% discharged.
It could take approximately 1-2 hours to charge a 7.2 volt 1800 mah RC car battery on a standard charger.