Power your industrial and professional devices with Energizer Industrial Lithium 9V Batteries. Proven lithium performance keeps you on the job with the longest-lasting professional batteries in high tech devices at construction sites, facility maintenance, repair services, medical centers, business offices, classrooms and more. Because your tools of the trade are an investment worth protecting, these industrial 9V batteries are 100% leakproof in standard use. They perform in extreme temperatures (-40°F to 140°F) and hold their power with up to 10 years of shelf life. All of these features are packed inside a lithium 9V battery that weighs 25% less than an alkaline 9V. Oh, and there's this-these 9V batteries provide up to 10 years of backup battery in AC-powered smoke detectors. So, for the precision devices and crucial equipment of your worksite, depend on the power and protection of Energizer Industrial Lithium 9V Batteries.