⚡ Power that keeps up with your life—no compromises, just pure energy.
The Energizer Ultimate Lithium 9 Volt Battery offers up to 10 years of backup power in smoke detectors, lasts 20% longer in toys than Energizer MAX, weighs 25% less than standard alkaline batteries, performs reliably in extreme temperatures from -40°F to 140°F, and features leak-resistant construction for enhanced device protection.
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