How Much Current Can A 12v Battery Supply. If youre talking about a car battery then 210 amps would take charge it overnight where as 2050 amps would charge it in an hour or two. The wimpy prius 12v battery cant even power the 750 watt heater at all the voltage drops to 105 volts pretty fast and sounds the low-voltage alarm on the inverter.
Answer 1 of 43. If the battery has Wh information on it convert it to mAh. 9 of these lights will pull 1224 amps per hour.
If youre talking about a car battery then 210 amps would take charge it overnight where as 2050 amps would charge it in an hour or two.
If the battery has Wh information on it convert it to mAh. Select the charge current according to battery size. If you want to charge a 12 volt lead-acid car battery with a 12 volt DC power supply which is not a battery charger then no that wont work. 1 using front cig lighter nothing else plugged in - 8 amps basically as much as the battery can draw per specs 2 using front 12v outlet nothing else plugged in - 8 amps.
