The formula you are looking for is W = I x E. Watts = Amps x Volts.
Remember that watts are voltage x current(amps) The number of watts you can get from a 48V battery will depend on how many amps the battery can deliver and how much the load can draw.
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
Not sure about how many Watts your 36 volt charger uses, but you can find out by this formula... Volts X Amps = Watts.
Watts = Volts x Amps, if you use your algebra you will find that it's approx 14 Amps.
watts = volts * amps--> Amps = watts/ volts therefore; 2000/220= 9.09 amps
45 Watts
Remember that watts are voltage x current(amps) The number of watts you can get from a 48V battery will depend on how many amps the battery can deliver and how much the load can draw.
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
Not sure about how many Watts your 36 volt charger uses, but you can find out by this formula... Volts X Amps = Watts.
Watts = Volts x Amps, if you use your algebra you will find that it's approx 14 Amps.
watts = volts * amps--> Amps = watts/ volts therefore; 2000/220= 9.09 amps
You need to know amps to answer this... Amps x Volts=watts
Only when the load is purely resistive.
Depends on the battery. It is listed on the battery as Cold Cranking Amps (CCA).
They don't. Car batteries produce 100's of amps of current. a 1.5Volt flash light battery produces milli-amps at best.
Watts = amps x volts. Something pulling 10 amps at 12 volts is 120 watts
Amps, volts and watts are interrelated, but you need to do a little math. Amps * Volts = Watts