Our Intrinsically Safe Battery is ATEX Zone 0, 1, 2 and Class I Division I certified to use in hazardous areas. Nothing outlasts the long-lasting power of Ultimate Lithium Batteries. Each battery’s safety-conscious, leak-proof design gives you confidence that your most-loved devices are protected against leaks and corrosion. These batteries can perform in extreme temperatures (from -40F to 140° F) and last in storage for up to 20 years… making Ultimate Lithium batteries the clear choice to dependably power the essential devices in your life.