Power your industrial & 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 & 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 (-40F to 140F) & 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, & there's thisthese 9V batteries provide up to 10 years of backup battery in AC-powered smoke detectors. So, for the precision devices & crucial equipment of your worksite, depend on the power & protection of Energizer Industrial Lithium 9V Batteries. Battery Type: Lithium; Battery Size: 9V; for Use With: Electronic Equipment; Flashlights; Garage Door Openers; Smoke Detectors; Battery Capacity: 3500 mAh.