The BL2150U is a premium quality 21700 lithium-ion battery with 5000 mAh capacity specifically designed for high-intensity torch use.
Featuring a built-in micro-USB charging port, BL2150U makes charging easier than ever before! You can charge the battery directly with a USB cable and 5V adaptor. No extra charger is needed anymore!
Of course, it still can be charged on an external charger if desired.
The all-new Li-ion battery provides the voltage and power needed for extended runtime and higher lumen capacities than the 18650 battery.
Besides the short circuits, overcharge/over-discharge, and overheating protection, BL2150U also has three sets of overheat protection - pressure relief, microporous, and PTC cathodal block to ensure safety.
||5000mAh 3.6V protected Li-ion rechargeable 21700 battery with the USB TYPE-C charging port
|USB Charging Voltage:
|USB Charging Current:
||Recommended 1A, maximum 5A
|Charging and Discharging Cycle:
|Protections in the anode:
Short circuits, overcharge/over-discharge, and overheating
☑️ Pressure Relief Valve Protection
☑️ Separate Microporous Protection
☑️ PTC Cathodal Protection
||Red during charging, Green when charging finished
||21mm/0.82" (Diameter)* 70mm/2.75" (length)
||1-year (12 months) free warranty
In the Package:
USB charging cable
Tips to Maximize Lifespan of 21700 Battery
Please avoid storing the 21700 battery in harsh and extreme conditions such as below:
- High Humidity
- High Temperatures
- High Constant Current Load