what voltage is it
suspect its up to if you reduce the light level
at 12v 1 amp is around 12.5w so 20w will be around 1.6amps per hour so x8 will be around 13 amps
what capacity is the battery [volts and amps/watts]
suspect its up to if you reduce the light level
at 12v 1 amp is around 12.5w so 20w will be around 1.6amps per hour so x8 will be around 13 amps
what capacity is the battery [volts and amps/watts]
