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 UI2 Dual-Slot USB Charger, for 18650, 21700 etc Batteries
Lithium battery Charger for 18650 and 21700 batteries.
Nitecore Q6 6 Bay Battery Charger | Quick-Charging
Amazon.com: 8 Bays Charger USB C Battery Charger XTAR VC8 Type C 3A Fast Charger 8-Bay Smart Charger LCD Display for 3.6V 3.7V Li-ion 1.2V Ni-MH C (Package Not Including Battery)
Nitecore UMS2 Dual-Slot USB Fast Charger for 18650 21700 batteries