The CZVV 1.5V Rechargeable AA Lithium battery is designed for use in household and business items like mice, keyboards, gamepads, remotes, toys, and more. Ultra-High Capacity High energy density in a small volume ensures maximum capacity. Whether it is daily necessities or office devices, the large capacity escorts the endurance of devices significantly. Cycle 1300s of Times Cycle times to over 1300x, the combined value of a single battery exceeds 1000 ordinary dry batteries. All batteries are guaranteed to be pre-charged before leaving the factory. CZVV warrants these batteries to be free from defects in materials and workmanship. About Constant Output We have noticed that for a long time, there has been a tangled question - why are the advantages of disposable and rechargeable batteries incompatible? The voltage of a rechargeable battery always drops gradually over time. When the rechargeable battery voltage is not high enough to wake the device, a new annoyance arises - why does the rechargeable battery always seem to fail to achieve the ideal battery life? The key to solving this problem is how to keep the voltage of the rechargeable battery at a constant level. A new generation of 1.5V constant voltage output AA rechargeable batteries is here. Equipped with short-circuit protection, overcharge protection, constant voltage control circuit, etc. - the CZVV laboratory has once again defined the smart chip technology in the battery field. About CZVV We are an emerging high-tech enterprise from China. We founded the brand with the vision to redefine green energy and make life better. At CZVV, we focus on producing the highest quality products for consumers - a philosophy that has been in place since we produced our first battery on the shop floor. Since then, the pursuit of supply chain excellence has become not an end but a mission for us. Not the end, but the beginning.

What You Get: CZVV Ultra Pro 3500mWh 1.5V AA Batteries(4 Count Pack), Batteries Storage Case, our worry-free 12-month warranty, and friendly customer service. Wide Range of Applications: Compatible with any AA battery-powered device, AAA batteries are also available. Thanks to the process characteristics of lithium-ion batteries - compared with the 30% self-discharge rate of Ni-MH batteries, the 23% rate of Ni-Cr batteries, the unique 1% rate of CZVV rechargeable AA batteries ensure the service life - which means the batteries still maintain 80% capacity after 36 months of non-use. Cycle 1300s of Times: Small Body, Big Power. Equipped with CZVV 1.5 volt constant voltage innovation technology, through the proper ratio of positive and negative materials, CZVV rechargeable AA batteries increase the cycle times by 30% compared to traditional rechargeable batteries. Spend Once, Hassle-Free Use. Ultra-High Capacity: Weighs as little as a piece of the fountain pen(0.71 oz) yet could power last smart lock use times 50% more, Oximeter use times last 37% more. Whether it's a gamepad, wireless keyboard, mouse, or other devices powered by AA batteries - choose rechargeable AA batteries, Recharge Anytime, and Use Smoothly.