[High Power Capacity] Includes TENAVOLTS AAA High-Capacity Rechargeable Batteries (4-Pack) pre-charged, up to 1110 mWh.100% Quality Guarantee and Satisfied Customer Service. [8 Hours to Charge fully] Get a full charge in 1.8 hours. Faster than Traditional Ni-MH rechargeable batteries needed 3 hours to charge fully. [Constant voltage and Best Performance] TENAVOLTS rechargeable lithium batteries are by far superior in charge retention and longevity. Equipped with innovative technology, Tenavolts outputs 1.5 voltage from 100% to 0% electric capacity, provides constant voltage, and best performance in heavy load discharge. [Wide Usage] 4 AAA high-capacity rechargeable batteries are great for use in your household devices, such as digital insulin pumps, toys, remote controls, flashlights, and portable audio players(NOT FOR CAMERA FLASH USE). [Long-lasting batteries, Less Waste] Tenavolts can be recharged in 1,000 cycles. From environmentally conscious, rechargeable batteries are more economical and better than regular batteries for the environment. Since discarded batteries are terrible for the environment.