Universal Lithium Ion Li-on Rechargeable and Nickel Metal Hydride NiMH Battery Charger - Dual Slot Portable design with indicator light Designed to charge your rechargeable Lithium ion (LI-ION) and nickel metal hydride (NIMH) batteries quickly and safely Can charge all kinds of 3.6V ,3.7V lithium battery, such as LIR123A, 18650, 14500, 10440 and so on Can also charge 1.2V MH-Ni battery, such as C, AA, AAA 2 slots to charge two batteries at the same time