First, confirm the positive and negative polarity of the battery. Connect the red clip of the charger to the positive terminal and the green clip (or black clip) to the negative terminal.

(2) Turn the current regulation switch counterclockwise to the first position off, then switch the voltage selection switch to the corresponding voltage position. Start turning the current regulation switch from weak to strong, and observe the charging ammeter to determine the appropriate charging position (generally, the charging position is placed in the normal charging position).

(3) To extend the battery's service life, please charge it with a current of 1/10 of the battery capacity. If urgently needed, you can appropriately increase the current to reduce the charging time. If there is no instrument to check whether the battery is fully charged, you can directly unscrew the battery cap. If a large number of bubbles emerge, it is considered full (except when the battery is broken).

(4) Before connecting or disconnecting the charger to the battery, disconnect the power supply first.

(5) When charging the battery installed in a car, first connect the battery end that is not connected to the chassis, and then connect the other end to the chassis. The connection point should be far away from the battery and fuel lines. Then connect the charger to the power supply network.

(6) After charging is complete, disconnect the charger from the power supply network, then disconnect the connection with the chassis, and then disconnect the connection with the battery.

(7) Turn the current regulating switch to the critical position. Disconnect the power supply, remove the battery clip, and clean the dirt on the battery clip.