NITECORE UI2 Dual-Slot USB Charger, for 18650, 21700 etc Batteries
Nitecore i2 Charger - Nitecore | Vaprio.eu
Nitecore i4 4 Channel Battery Charger – Modlite Systems
Nitecore UMS2 Dual-Slot USB Fast Charger for 18650 21700 batteries
Amazon.com: Nitecore UMS2 Intelligent USB Dual-Slot Quick Battery Charger for Li-Ion/Ni-MH/Ni-Cd/IMR 16340 14500 18650 21700 20700 AA AAA and More Batteries, with LumenTac Battery Organizer : Electronics
F2 (Discontinued)
NITECORE UI2 Dual-Slot USB Charger, for 18650, 21700 etc Batteries