High Power Capacity: Includes TENAVOLTS AA High-Capacity Rechargeable Batteries pre-charged, the capacity of each battery is 2775 mWh. Great use for high-power demand device, including insulin pump, toys, gaming controller, game camera and portable audio players. 1.8 Hours to Fast Charging: This lithium AA batteries come with a super fast charger. From 0 to 50% only need 0.5 hour; and fully charged only need 1.8 hours. Much faster than traditional Ni-MH rechargeable batteries which need 6 hours to fully charged. Constant 1.5V Voltage: TENAVOLTS rechargeable AA batteries with charger are far superior in voltage retention. Designed with innovative technology, TENAVOLTS outputs 1.5 voltage from 100% to 0% electric capacity, providing constant voltage and best performance in heavy load discharge. Suitable to be used in the blink cameras, gaming camera etc. 1000+ Charging Cycles: This rechargeable lithium AA batteries can be recharged in 1,000 cycles. Since discarded batteries are terrible for the environment, from environment perspective, rechargeable batteries are more economical and better than regular batteries for the environment. Unique recharge design: TENAVOLTS 1.5V batteries AA size can only be recharged with the authorized unique Tenavolts battery charger. The TENAVOLTS battery charger satisfies the special recharging requirements. High Power Capacity: Includes Tenavolts AA High-Capacity Rechargeable Batteries pre-charged, each with 2775 mWh. Great use for high-power demand device, including insulin pump, toys, remote controls, and portable audio players. 1.8 Hours to Fully Charged: Get a full charge in 1.8 hours. Much faster than traditional Ni-MH rechargeable batteries which need 3 hours to fully charged.Constant voltage and Best Performance: Tenavolts rechargeable lithium batteries are far superior in voltage retention. Designed with innovative technology, Tenavolts outputs 1.5 voltage from 100% to 0% electric capacity, providing constant voltage and best performance in heavy load discharge.Long-lasting batteries, Less Waste: Tenavolts can be recharged in 1,000 cycles. Since discarded batteries are terrible for the environment, from environment perspective, rechargeable batteries are more economical and better than regular batteries for the environment. Unique recharge design: Tenavolts AA batteries can only be recharged with the authorized unique Tenavolts battery charger. The Tenavolts battery charger satisfies the special recharging requirements. These small batteries Suitable to be used in Toys, electric shavers, toothbrushes, lmassagers. Our rechargeable batteries aa also suitable for flashlights, outdoor lights, solar lights, lamps, flash, cameras, game consoles, XBOX controllers, headsets, wireless speakers, microphones, intercoms, remote controls, mice, keyboards. This double a battery also can be used in headphones, Musical Instruments, drones, pulse meters, alarm clocks, calculators, thermometers, telephones, car devices, doorbells, home decor Lawn lights, LED lights, table lamps, clocks, electronic candles, door locks. This aa batteries lithium is also named aa batteries, battery aa, blink batteries lithium replacement, blink camera batteries, pilas recargables aa, ring camera battery, xbox controller rechargeable battery, rechargeable batteries xbox,