The use of universal charger:
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1. Fasten the cell phone battery and look at the positive and negative terminals marked on the cell phone battery. Universal charger is divided into positive and negative electrodes;
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2. Open the clip of the universal charger, put the mobile phone battery into the clip, and touch the metal interface of the mobile phone battery on the universal charger with a metal sheet. Before contact, look at the positive and negative electrode marks on the universal charger. The negative electrode can directly make the battery interface contact with the metal sheet of the charger. If the position of the metal sheet is not suitable, you can adjust the metal sheet on the charger to the appropriate position. After contact, if the charger lights up, it indicates good contact;
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3. After the charger is in good contact with the battery, plug the charger into the socket. If you see the indicator flashing, it means that it is charging. Wait patiently