Nitecore Digicharger D4 Four Cell Lithium Ion IMR Charger

The D4 from Nitecore is the vapor industries' favorite because of its feature-rich design, speed of charge, ease of use, and reasonable price.  You can charge one tiny cell, or four large batteries, or any combination due to each channel being completely independent.  This smart charger includes every safety feature you can think of, it's even made out of fire retardant materials.  Each channel features its own digital display showing battery charge status. The display is very straightforward and tells you everything you want to know about each battery:  

Full Features Include:

• Capable of charging 4 batteries simultaneously
• Each of the four 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
• Insured worldwide by Ping An Insurance (Group) Company of China, Ltd

Specifications:

• Input: AC 100-240V 50/60Hz 0.35A(MAX), DC 12V 1A
• Output voltage: 4.2V ±1% / 3.7V ±1% / 1.48V ±1%
• Output current: 375mA x 4 / 750mA x 2
• Compatible with:
• Li-ion / IMR / LiFePO4: 26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340 (RCR123), 14500, 10440
• Ni-MH / Ni-Cd: AA, AAA, AAAA, C
• Dimensions: 143mm× 99mm×36mm
• Weight: 239g (without batteries and power cord)

You can download the full Nitecore D4 User Manual / Instructions here.