The Nitecore F21i is an ultra-compact fast charger specifically designed for use with Nitecore 21700 i Series batteries and includes a Nitecore NL2150HPi 5000mAh cell. The F21i can also be used as a powerbank and weighs in at just 22 grams (without battery).

Nitecore 21700 i Series batteries are a patented product by Nitecore which feature dual way output with positive and negative polarities at both ends and a high energy density. Enables a highly efficient output by minimising the loss of power due to internal resistance.

When used with a Quick Charge Adapter (available separately) the F21i can charge at 18W. Three blue indicators light to show the charging status.

Multiple protection safeguards including overcharge protection, over-discharge protection, short-circuit protection and thermal protection.

Input: USB-C: 5V-2A / 9V-2A

Output: Battery: 4.2V-4A (MAX)
USB-C: 5V-2.4A / 9V-2A / 12V-1.5A

Package includes: F21i, USB Charging Cable (USB-C to USB-C) and NL2150HPi 5000mAh 21700 battery.