Checking the battery capacity can be done by checking the instructions on the phone battery, relying on software specifically designed to test the battery capacity of the phone, or through a special testing section. A normal battery manufacturer can have a relatively high capacity compared to nominal ones. The capacity of lithium-ion mobile phone batteries is generally between 1300 and 1400mah, so currently, lithium-ion batteries can meet the requirements of 1.5 times that of nickel hydrogen batteries used, followed by 3.0 times that of nickel cadmium batteries
Mobile phone battery detection method
1. Check the battery capacity through software specifically designed to test the battery capacity of mobile phones.
2. In the case of constant current during the testing process, select a resistor that is similar to the resistance of the mobile phone tested in series with an ammeter, and discharge the battery to 3.7V at full charge (4.2V). Measure the current and record the time. If the recorded current is 200mA, the discharge time is 4 hours. So the battery capacity is 200X4=800mAh
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