It takes between 8 and 12 hours to charge a 12 volt battery at 2 amps. The actual time will depending on how much charge is in the battery initially.
8 hours
I doubt the charger is putting out 30 Amps on a slow charge. need more info on battery and charger.
That would depend on the size of the battery, you want the amps of the charger to be reasonably proportional to the capacity of the battery.
Yes, it can be used to charge that battery. The chargers rating, 2 amps, is the maximum that can be drawn from it.
6volts 2amps for 6 volt battery, and 12 volts 6amps for a 12 volt battery. Don't charge a 6 volt battery on the 12 volt setting or it will explode!!!!!!!!! you're ok going the other way though.
Depends on the battery. It is listed on the battery as Cold Cranking Amps (CCA).
A 10 amp charge will only output 10 amps and 12 volts. So, if you want to charge thee 12 volt batteries hooked in series you will have to disconnect the positive cable from each battery and charge then individually. You cannot charge three 12 volt batteries hooked in series. That requires a 36 volt charger.
no you can get different amp chargers but they will charge any battery the higher the amps the faster the charge but it is better to charge a battery slowly so you shouldn't charge on very high settings any 12vdc car battery charger will charge a 12vdc car battery
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.
With a 12 volt battery charger set to around 5 amps. Do not overcharge if it is not an automatic charger.
With a charger specifically designed to charge this battery.
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.