Nitecore D4 LCD Digicharger Li-ion Battery Charger - Central Vapors
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
NITECORE UMS4 4-Slot USB Fast Charger, for 18650 21700 Batteries
Nitecore UNK2 Dual-Slot USB Charger for Nikon EN-EL15 UNK2 B&H