The machine battery is charged from a direct current source. In this case, various rectifiers are used, which allow you to regulate the charging current or voltage. Typically, two methods are used to charge batteries: constant current or constant voltage.
Instructions
Step 1
Charge the car battery at a constant current value of 0.1 times a 20 hour charge rate. For example, if your battery has a capacity of 60 Ah, then the charging current will be 6 A. Use a regulating device that will keep the current constant during the charging process.
Step 2
To reduce gas evolution and increase the state of charge of the battery, it is necessary to stepwise decrease the current strength with an increase in the charging voltage. The battery is considered fully charged if there are no changes in current and voltage within 1-2 hours. The disadvantage of this charging method is the need for constant monitoring and control over the magnitude of the charging current.
Step 3
Use the constant voltage method to charge the machine battery. The state of charge will directly depend on the voltage of the charger. The internal resistance of the battery can lead to the fact that at the moment of switching on the current value can reach 40-50 A. In this regard, the charger must be equipped with a circuit design that limits the charging current to 20-25 A.
Step 4
Connect the charger to the car battery. Determine the polarity of the wire connected to the chassis of the vehicle. As a rule, it has a minus value. In this case, it is necessary to connect the positive wire of the charger to the positive terminal of the battery, and the negative wire to the vehicle ground. In this case, the wires should not come into contact with the battery or gasoline line.
Step 5
Plug in the charger. Set the required battery charging mode. Check the charging process and change the parameters of the charging current or voltage if necessary. After finishing it is necessary to disconnect the device from the network. After that, the negative wire is first disconnected, and then the positive wire.
