NITECORE UI2 Dual-Slot USB Charger, for 18650, 21700 etc Batteries
Amazon.com: Nitecore UMS4 Intelligent USB Four 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
100% Original Nitecore Um4 Um2 Usb Qc Battery Charger Intelligent Circuitry Global Insurance Li-ion Aa Aaa 18650 21700 26650 - Chargers - AliExpress
Authenitc Black Nitecore D4 4-Slot Digital Charger for IMR / Li-Ion
NITECORE UM20 2-Slot Li-Ion/IMR Battery Charger - PhotonLight.com, Inc.
Nitecore D4 LCD Digicharger Li-ion Battery Charger - Central Vapors
Amazon.com: Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger for Li-Ion/Ni-MH/Ni-Cd/IMR 16340 14500 18650 21700 20700 AA AAA and More Batteries, with LumenTac QC3.0 Charging Adapter : Electronics