Watts, amperes (amps) and voltage are three aspects of electricity. There are no watts or amps in a volt. Watts are equal to volts multiplied by amperes (watts = amps x volts). If you consider the...
work is done at a rate of one watt when one ampere flows through a potential difference of one volt. volts x amps = watts So 1 watt is any ratio of volts x watts that equals 1. 1volt x 1amp = 1 watt...
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...