The Cygnett AA USB-C Rechargeable Li-ion Battery (4 Pack) (model CY5875CCCRB) is a high-capacity, eco-friendly power solution designed to replace thousands of single-use alkaline batteries. Like the AAA version, these AA batteries feature an integrated USB-C charging port on each cell, eliminating the need for a dedicated battery charging cradle. Power that comes back stronger No more last-minute trips to the store to replace old batteries; these batteries restore power to things that matter most such as toys, remotes, clocks & work peripherals. A smarter choice Recharge each battery up to 1,000 times. That means this four-pack replaces the need for up to 4,000 single-use batteries over its lifetime. Make the smarter choice for both your wallet and the environment. Charging cable included Recharge all four batteries at once using the 4x USB-C Charging Cable. Make it a bundle Pair with the Cygnett 20W USB-C Wall Charger and have everything you need for a smarter way to power your everyday.