To keep your batteries fully charged and ready to go the Orca Torch C108 battery charger is what you're looking for. The C108 charger will charge both 18650 and 16340 lithium-ion batteries, and is multi-functional, supporting AC and DC Charging coming with adapters for both power sources. The charging unit has an LED indicator display charging in progress for each battery. There are 2-independent charging channels allowing you to charge to batteries simultaneously and separately. Charger is equipped with short circuit, overcharge, over current and reverses polarity protection; it features the constant-current charge which extends the lifespan of the battery. The charger can be used with power source (AC) 100 to 240V, 50/60 Hz, 1000mA 12V (DC).