X Power 21700 4000 mAh INR Battery

Prepare your replacement cell

This X Power 21700 has a stated capacity of 4000 mAh. Its positive terminal is flat and its chemistry designation is INR. Before installation, make sure the device accepts this format and contact type. Then align the terminals with the markings in the compartment.

Match the specifications to your equipment

Nominal voltage is 3.7 V and continuous discharge current is 20 A. A current limit describes electrical conditions to respect; it is not a universal power setting for a mod. Consult your device requirements with the fitted battery in mind.

Also choose a charger that supports the 21700 format and the cell type in use. Inspect the battery before charging or installation. Damaged outer insulation or a damaged contact means you should stop using the cell.

Store the battery as soon as it is removed

The product comes with instructions and a plastic case. Use the case to transport the cell separately, protecting its terminals. Keep the battery away from metal objects instead of leaving it loose among your belongings.

This accessory is intended for adults. Store it out of reach of children.