The traditional Li-ion battery with protective plate is the nickel plate connection method for the negative protection circuit, while the Weltool UB22-19 uses the built-in protection circuit in the battery positive technology, the steel shell is riveted and integrated with the battery core, effectively avoiding short circuit caused by collision or wear and so on. and will not increase the battery diameter.And it does not increase the battery diameter.
The Type-C USB charging interface is set in the positive protection circuit. It can be connected to the USB charging cable to connect the 5V adapter to charge the battery directly, or the USB interface of the computer with high current output. It can also be connected to the mobile power source to charge the battery. You can also put the battery into the charger in the Charging; there is a charging indicator on the battery to indicate the charging status.
Selected 22430 Li-ion battery cells, low internal resistance, high capacity, large discharge current; battery has triple overheat protection: pressure safety valve protection, diaphragm micro hole protection, PTC cathode blocking protection and positive protection circuit with four protections : Overheat protection, overcharge protection, over discharge protection and short circuit protection. The battery positive cap is raised. It is used in the flashlight to contact the positive spring or the PCB contact surface is tighter. Single or multi-cell batteries can be used at the same time.
Model: UB22-19
Capacity: 1900mAh
Internal resistance: ≤50mΩ
Voltage: 3.7V
Continuous discharge current : 9A（10-25 ℃）
Charging current: 2A (Type-C USB interface charging current), 3.4A (Max. charger charging current)
Overcharge protection voltage: 4.2±0.05V
Over-discharge protection voltage: 2.5±0.1V
Cycle charge and discharge times: 300 times, the battery has 80% capacity
Charging indicator: red light (charging), blue light (charged)
Charging temperature: 0~+45 ℃
Discharge temperature: -20~+55℃
Storage temperature: -5~+35℃ (Less than 3 months)
Dimensions: 22.6±0.2 mm (diameter), 50±0.2 mm (length)
Weight: 47±0.5g
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