Rechargeable Lithium Ion (Li-ion) battery specially designed for the "i" series flashlights

• High capacity 6000mAh
• Internal safety features
• High discharge current 20A
• Mercury and lead free

The "i" series of 21700 batteries is revolutionary and powerfully upgraded.

• Patent No. US No.20190165406A1
• Utility Model Patent No. ZL201820118916.0

As a patented product developed by NITECORE, the 21700i series battery is an exclusive rechargeable 21700 lithium-ion battery with dual output with positive and negative polarity at both ends and high energy density. It allows for extremely efficient output, minimizing power loss due to internal resistance.

Incredible battery performance

The dual polarities of the 21700i series battery at both ends have broken the mold of connecting the head and tail of the flashlight in order to minimize its size and weight. This significantly reduces internal resistance, providing instant energy conversion to power the device. Thanks to innovative technology and techniques, this can offer more possibilities in the design of our flashlights.

It ensures a stable and long-lasting power supply, ideal for high-consumption devices.

• Large capacity: 6000mAh
• Continuous discharge current: 20A

Internal Safety Features

• Ceramic diaphragm with temperature resistance
• Pressure relief valve activated in case of rapid temperature increase
• Built-in