How to charge car battery when it out of power?

How to charge car battery when it out of power?

The battery it's very important for the car, ignition must use battery. What if you don't have electricity for a long time? We got some methods from netizens.

How to charge if the car battery is dead? - Power consumption

When the vehicle is started, it is driven by the starter motor on the flywheel side of the engine. The power consumption of the starting motor is the power consumption when the car starts. Generally, the car with a displacement of less than 2 liters has a current of 500 amps in winter and a voltage of 12 volts when starting the motor. The duration of the start is generally 5 seconds, so the power consumption for one operation is: W=uit=12* 500*(5/60) =500 watts.

Current required by electrical equipment (amperes)

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Winter start 225-500

Start 200-400 in summer

Reading light 25

Rear compartment light 25

Ice cream 25

Cigarette lighter 25

Seat adjustment 20

Brake light 20

Double flash light 20

Turn signal 20

Speaker 20

Window lift 20

Headlights (high beam) 18

Air conditioning 15

Headlights (near light) 14

Radio 10

Taillight 8

Warm air 7

Wiper 6

Instrument light 4

Electric antenna 2

Power consumption

How to charge if the car battery is dead?

The generator is used for this purpose. When the engine is working, the generator not only provides the power demand of the whole vehicle, but also charges the battery. However, due to the limitation of power, if the vehicle is driven long distance at night, generally the power of the generator can only supply the light, so when driving at night, try not to use other appliances besides the light engine

How to charge if the car battery is dead?

Charging the battery with a portable charger, it usually takes 20 hours to charge the car to start the battery. Then check the battery to see if it is charged. The open circuit voltage of the 12V battery is about 13.0V when it is fully charged. If the voltage meets the capacity of the retest test or the ignition start, if it is feasible, it is normal. If it is not possible, it can only be changed. The battery is gone.

12V100Ah charging mode: using constant voltage current limiting mode for charging, constant voltage 14.8V current limit 15A charging for 16 hours, and then charging with 3A constant current for 4 hours, a total of 20 hours.

When car battery is dead, you no need to panic and you also don't need to change battery.

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