Qty 2 K2123A (Rechargeable CR123A size 16340) lithium ion (LFP) rechargeable batteries with charger that has ONLY A/C capabilities. Please contact K2 if you need the D/C charge adaptors. Each batteries average voltage is 3.2 volts. Works great in your camera's, flashlights, etc. Save $ and the environment by recharging these batteries several 100 times.