3500mah No.1 Long-lasting - 8 Pack 3500mAh AA lithium batteries, you can feel the power overwhelming, especially on devices which draw more energy. Peace of Mind In Extreme Environments Our batteries are cold and heat resistant, giving reliable, long-lasting power from -40°F to 140°F whether you're on an outdoor trip, at home, or at work. No Leakage We take the safety of your favorite gadgets very seriously, the battery has a professional triple safety leak-proof design to eliminate leakage, no need to worry about safety issues. 20-Year Shelf Life Blinkspower batteries are always fresh and shelf life of up to 20 years, making them an perfect choice for long-term storage and hurricane preparedness items. Widely Compatible It is specifically built for high power consumption devices, but it is also ideal for a wide range of regularly used home smart devices, including Blink cameras, outdoor trail cameras, smoke alarms, remote controls, and more. Note: 1. Battery life