About this item [Package Includes]: 4 Advanced 9V Lithium Batteries (NOTE: Non-Rechargeable). [New-Generation 9V Lithium Battery]: EBL 9V lithium batteries feature advanced technology that offers a battery life 2.5 times longer than standard 9V Alkaline (6LR61) batteries, eliminating the need for frequent replacements every two years. [High-Powered Standard Size]: Featuring a standard size design compatible with most smoke detectors and offering ample power for various devices, these super lithium 9V batteries maintain their charge for up to 10 years in storage. [Exceptional Performance]: EBL lithium 9V batteries provide reliable, high performance across a broad temperature range from -40°F to 140°F, ensuring consistent operation in any weather condition. [Compatible with Various Devices]: These batteries provide power for your essential devices, such as smart home systems, outdoor surveillance setups, digital cameras, and handheld gaming consoles. [Product Upgraded]: Package may vary.