The Nitecore D2 is a great battery charger. I have one myself and enjoy it very much. There’s a long list of batteries that are compatible but I’m sure the majority of vapers will have any combination of 26650, 18650, 18500/18490, 18350 which are all compatible with this charger. The screen on it is great and gives various information regarding the battery or batteries that are currently being charged such as battery voltage, charge time, battery type, etc. Upon inserting a battery it will automatically detect the battery type and power status and selects the appropriate voltage and charge mode.

I love my Nitecore D2 and would recommend it to any vaper in need of a great battery charger.

Details:

Capable of charging 2 batteries simultaneously
Each of the two battery slots monitors and charges independently
Compatible with and identifies Li-ion (26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries
Optimized charging design for IMR batteries
Integrated LCD panel clearly displays charging parameters and progress
Two conveniently located side buttons allow easy selection of specific battery types and charging parameters
Intelligent circuitry detects the battery type and status before entering automatic charge mode (CC, CV, dV/dt)
Automatically detects battery power status and selects the appropriate voltage and charge mode (with the exception of LiFePO4 batteries which require manual selection
Compatible with LiFePO4 batteries
Compatible with small capacity batteries
Automatically stops charging when complete
Features over-charge prevention to protect batteries
Features temperature monitoring to prevent overheating
Made from durable ABS (fire retardant / flame resistant)
Features reverse polarity protection
Designed for optimal heat dissipation
Certified by RoHS, CE, FCC and CEC