It has a maximum of 120 watts.
A 12 volt solar panel has a maximum output current of 10 amps. According to the power calculation formula P=IV, the maximum output power of the solar panel can be obtained as 12 volts multiplied by 10 amps, or 120 watts. A 12 volt solar panel therefore has a maximum capacity of 120 watts.
Assuming the effective lighting duration of a 12V5W solar panel is 4 hours per day, the electricity generated is 5W
/12V
< p>*4h=1.67ah,1.67/0.8≈2.1ah. If you want to fully charge it in one day, use a 2 Ah battery. If you want to fully charge it in two to three days, use a 5 to 6 Ah battery. .