"I have many 18650 batteries. The Nitecore F2 is the perfect way to use them to charge micro USB devices quickly when I am traveling. With 2 3200 mah 18650s inserted, it charges my cell phone 3 1/8 times pretty fast. Fantastic." - Joe J. from La Palma, CA // NITECORE Store Customer Charge your primary batteries or pair the F2 with fully charged batteries to power your USB devices, the choice is yours!
— Products shown: Nitecore F2 Flexible Dual-Slot Power Bank Charger for 18650, 16340, 14500 . See More
