Energizer® Ultimate Lithium™ batteries are the world’s longest-lasting professional batteries in high-tech devices. In the field, on the go, when battery changes are inconvenient, Energizer® Ultimate Lithium™ delivers the reliable, leak-proof and lightweight power that professionals demand. Wherever you work whether it’s a construction site, facility maintenance, medical centre, business office or classroom: no professional portfolio last longer, these AA batteries keep your electronics ready for the job. Based on standard use, they’re 100% leak proof to protect your work site devices. And, if you work outdoors or in an environment where the temperature may vary, these batteries operate in temperatures ranging from -40ºC to 60ºC.