Capacity is the core parameter of lithium batteries, and lithium battery manufacturers generally have dedicated equipment for testing to ensure the quality of shipped products is qualified. However, for ordinary users, how do they know if their newly purchased lithium battery capacity is qualified?

　　Lithium battery processing manufacturers here introduce a relatively simple testing method: the multimeter testing method.

　　Taking a 1000mAh lithium battery as an example (in addition to the lithium battery and multimeter, a charger should also be prepared)

　　Firstly, it is necessary to theoretically understand the voltage value of lithium batteries:

　　1. Charging termination voltage: It is also the no-load voltage, which is the voltage that does not work, usually 4.2V.

　　2. Working/nominal voltage: It is also the load voltage, and the voltage during normal operation is generally 3.7V.

　　3. Discharge termination voltage: refers to the voltage at which the battery cannot operate, with different designs of 3V and 2.75V.

　　To start testing, first use a charger to fully charge the battery with a full charge voltage of 4.2V. Then use an external meter as a constant current load and discharge at 0.2C (i.e. 1000 * 0.2=200mA). Set the discharge voltage of the multimeter to 3V. If the discharge time reaches 5 hours, it indicates that the battery is qualified. Nowadays, lithium batteries can generally discharge up to 2.75V, and the discharge depth is the same as the previous 3V termination voltage, which is 80%. However, it can be discharged for 8 hours, indicating an improvement in the power of lithium batteries.

Read recommendations:

Ni-MH AAA600mAh 1.2V

What are the types of lithium batteries

6F22 carbon battery.Operation process of iron lithium batteries

1.5V rechargeable battery

502030 battery