The NITECORE F21i is the Fast Charging Power System specially designed for 21700 i Series Batteries with 18W USB-C dual way fast charge.
2-in-1 Battery Charger & Power Bank
When used as a battery charger, it is available to charge a 21700 i Series Battery when connected to an external power source. When used as a power bank, it is always ready to charge other devices when the 21700 i Series Battery has sufficient power.
Tap the USB-C port, and the blue indicators will turn on to display the power level. It also has multiple protection safeguards including overcharge protection, overcurrent protection, over-discharge protection, short-circuit protection, thermal protection, overvoltage protection. It is ultra compact and lightweight with only 22g (0.78oz). The body is made from lightweight and fire retardant PC materials while the elastic band is made from EPDM rubber, featuring outstanding durability and excellent corrosion and heat resistance.
• Dual Way Fast Charging Power System for 21700 i Series Batteries
• 18W USB-C dual way fast charging available with QC, PD and more protocols
• Automatic detection on the USB devices to be used as a power bank
• Power indicators can indicate the remaining battery power
• Mechanical polarity reverse protection
• Multiple protection safeguards including overcharge, over-discharge, overcurrent protections and more
• Body made from lightweight and fire retardant PC materials
• Elastic band made from durable, corrosion and heat resistant EPDM rubber
- Diameter: 27.4mm (1.08")
- Length: 112.5mm (4.43") (With Battery)
- Weight: 22g (0.78oz)
- USB Charging Cable (USB-C to USB-C)
- Input: USB-C: 5V-2A / 9V-2A Output: Battery: 4.2V-4A (MAX) USB-C: 5V-2.4A / 9V-2A / 12V-1.5A