The necessary condition for charging the car battery at home is to need a charger with 14 volts of direct current at the output end and 5-10 amps of output current, and the output current is best adjusted. Charging the battery at home needs to master the charging time, the average charging time is about 8 hours, if the time is longer, there is an explosion.
When the car battery is out of power and the engine cannot start, it can be charged using the battery jumper method. Battery lapping is to connect the battery of another car with the battery without power, the power transmission can start the engine, and then rely on the internal generator to charge the engine in the running state.
Car batteries have a self-discharge phenomenon, about 1% of the natural loss of electricity every day. If the car battery is out of power, it will not only affect the use of electrical equipment in the car, but also cause the car to be difficult to start.
The methods of charging the car battery at home are: using the charger to charge the battery, using the car's generator to charge the battery, using the battery jumper method to charge, wireless charging, charging with conventional charging current, and replacing the battery pack. The specific method is as follows: Use the charger to charge the battery, usually the battery capacity of the family car is about 60Ah, and the charging current required is one-tenth of the battery capacity, that is, 6A. Charging with this current generally takes about 3-5 hours to be full, if you charge with low current, you need to charge for about 10 hours to be full.