The lithium battery adopts a single, replaceable design, which requires shell packaging. Users can remove, install and replace the lithium battery from the device by themselves.

　　The battery interface adopts 3-wire contact type, including power supply+, power supply - and temperature detection points. The contact points need to be gold-plated.

　　The battery has a rated voltage of 3.8V, a working voltage range of 3.5~4.2V, a capacity of 6000~8000mAh, a discharge rated current of 5A, and a peak current of 8A.

　　The battery has a temperature sensing function, which can integrate a negative temperature coefficient thermistor inside the battery. The internal temperature of the battery can be monitored through the charging management chip.

　　The charging management chip adopts TI's BQ24193, integrates switch mode battery charging management and system power path management, and supports a wide range of input sources, including standard USB host interface, USB charging port, and high power DC adapter.

　　Complete a charging cycle without software control, and realize three stages of charging by automatically detecting the battery voltage: pre charging, constant current charging and constant voltage charging. When the charging current is lower than the preset value (10mA), the charger will automatically terminate.

　　BQ24193 provides a variety of safety features for battery charging and system operation, including double negative temperature coefficient thermistor monitoring, charging safety timer and over-voltage/over-current protection, and supports the temperature curve in line with JEITA standards.

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