Solar panels are rated in watts output. To find the amperage use this equation, Amps = Watts/Volts. The wattage will be on the nameplate of the solar panel.
What is the Solar panel wattage to use charging a 12 volt 45 amp battery.
Yes, you can.
Yes. Provided that it has above 12 V output. I will. You must have a diode in place though.
20 amp on a 12 volt system
No. At 125 volts, the same 15 amp current results in 10 times as much power. Ohm's Law states that amps x volts = power.
No. If you connect two 12 volt batteries in series(positive to negative) to make 24 volts, you will have 100 amp hours. If you connect two 12 volt batteries in parallel(pos to pos, neg to neg) you will stay at 12 volts but have 200 amp hours
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
A 1-amp adaptor can not be used for equipment that draws more than 1 amp. It is not clear from the question which part of your system is 12 v and which is 20 v.
Yes if it is a 12 volt DC bulb.
12 volt 10 amp charger is what you need.
No.
It will be a 12 volt battery.