The Nitecore NL2140i 21700 battery is specifically designed for the Nitecore i Series, including the Nitecore P10i and P20i. The cell has a capacity of 4000mAh and a maximum continuous discharge of 8A.

The i Series battery enables a highly efficient output by minimising the loss of power due to internal resistance. It features a dual way output with positive and negative polarities at both ends, plus a high energy density of up to 240mWh/g.

The 21700 battery has a high performance protective circuit in addition to a range of safety features, including: 

• Nickel plated steel straps at both ends of the battery to ensure high impact resistance, good electrical conductivity and oxidation resistance
• Coated with a durable metallic film to guard against abrasion
• Tough plastic circuit board protector

The Nitecore NL2140i 21700 battery can be charged in the following Nitecore chargers: UMS2, UMS4, UI1 and UI2.

Please note: We are unable to accept returned batteries once they have been opened, so please ensure they are the correct cell for your device before ordering.