Dual 14500 Lithium Ion (Li-Ion) Rechargeable Battery Travel Charger Dual 14500 Lithium Ion Rechargeable Battery charger Small, compact, folds down for easy transport Input: AC 100-240V Output: DC 4.2V @ 600mA Great for charging ultrafire 14500 or other brands of 14500 lithium ion (Li-ion) Rechargeable batteries 1.25"x 1.75" x 3" in size