Designed for long-lasting performance in modern electronic devices, the 3500mAh Energizer Ultimate Lithium AA Batteries in this 4-pack are great for powering cameras, GPS units, wireless controllers, and more. The cells weigh about 33% less than equivalent alkaline batteries. Thanks to their very low self-discharge rate, they will hold their power for up to 20 years in storage. The batteries also function well in a wide range of temperatures, from -40 to 140°F. Additionally, their leakproof construction will help keep your devices safe.