The Nitecore NL2155HPi 21700 i-Series Battery delivers exceptional performance with a high capacity of 5500mAh, ensuring a long-lasting, reliable power supply. Its 20A continuous discharge current makes it ideal for high-drain devices, including high-performance flashlights and other demanding electronics.

This rechargeable Li-ion battery features dual-way output with positive and negative polarities at both ends, and a high energy density that minimizes power loss due to internal resistance, resulting in highly efficient performance.

The NL2155HPi offers an economical and environmentally friendly solution, capable of being recharged over 500 times, reducing waste and long-term costs.

Safety is a top priority for Nitecore. The NL2155HPi includes multiple internal safety mechanisms, such as:

• A pressure relief valve that activates in the event of rapid temperature increases.
• A ceramic diaphragm with high-temperature resistance.
• A built-in intelligent protection circuit at the positive polarity to guard against overcharging, over-discharging, and short-circuiting.

Externally, the battery is coated with a durable metallic film to resist abrasion and features a tough plastic circuit board protector for enhanced durability. Both ends are equipped with nickel-plated steel strips, providing high impact resistance, excellent electrical conductivity, and superior oxidation resistance.

The NL2155HPi is compatible with the following Nitecore chargers: UMS4, UMS2, CI4 and CI2.

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

Please note all orders for individual batteries without a device are sent via Royal Mail 48 Tracked, and not Royal Mail 24 Tracked or Special Delivery. Due to shipping restrictions, we are unable to individual batteries to the Outer Hebrides, Scottish Highlands and surrounding areas, Channel Islands and Northern Ireland. Please see our delivery page for further details.