NOTE: Batteries Can Not Be Recharged! Long-Lasting Reliable Power Each battery houses an impressive 1,500mAh capacity with low internal resistance. This ensures you can efficiently power your equipment for an extended period of time. Save the trouble of changing batteries for years to come. Supports Most Appliances Invest in a pack of RAVPower CR123A Batteries that can be used to power everyday appliances with the capacity of 1500mAh / 3.0V (4.5Wh). Pair it up with your Polaroid, Arlo cameras, flashlights, microphones, and most household medical equipment to be prepared for any emergencies. Replace CR123, DL123A, K123A, EL123AP, 5018LC, CR17345 and CR17335 with 3V voltage; Replace RCR123A, RCR17335, VL123A and ML123A with 3.7V voltage. Superior Performance in Any Weather Benefit from unconditional convenience and consistent performance in either freezing Arctic conditions or a scorching desert. Our batteries can beat the most extreme weather ranging from -40??C to 85??C / -49??F to 185??F. Up to 10 Year Shelf Life Premium low self-discharge mechanism keeps for nearly 10 years of idleness without draining the battery. Never get stuck ever again because of a dead battery. Greener and Safer Environment-friendly Li-ion batteries are your first step to a greener world. Containing no harmful chemicals, RAVPower batteries are guarded with short circuit, over current, and voltage surge smart protections that are gentler to the earth and safer for you.