Charging on the go is actually a thing now. A portable single 18650 charger that you can take with you when you're out and about.. Small, discrete, and portable, charging anytime you need it. 

USB charging cable only! No wall plug is included.

FEATURES:

• Fast charging at 1A
• Fits 3.6 or 3.7 volt batteries
• Reverse polarity protection Nitecore
• Activation function
• Auto detect charging function
• Over charging protection
• Short circuit protection
• Spring action makes a smooth sliding action when installing or removing batteries
• Steel cathode with low resistance and hard chromium plating to achieve a more precise charging voltage

Compatible with: 10440, 14500, 16340, 17340, 18350, 18490, 18500, 18650, 26500, 26650, 20700, 21700 

What you get:
1x Efest SLIM K1 battery charger

1x USB charger cable

1x User Manual

*** DON'T OVERCHARGE YOUR LI-ION BATTERY OR LEAVE A CHARGING BATTERY UNATTENDED/OVERNIGHT ***