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The Energizer Ultimate Lithium AA is a 1.5V lithium battery built for high-drain devices and extreme conditions. It lasts up to 9x longer than Energizer MAX alkalines in digital cameras, holds power for 20 years in storage, and operates from -40°F to 140°F. It weighs a third less than standard alkalines, making it a favorite for film and video production gear like wireless transmitters and timecode boxes. Reviewers praise its longevity and cold-weather performance, though it costs more than alkalines and is sold individually or in bulk boxes.
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Reviewers consistently praise the Energizer Ultimate Lithium AA for its long life in high-drain devices and reliable performance in cold weather. Many note it lasts significantly longer than alkaline batteries, though some find the price high.
The Energizer Ultimate Lithium L91 is a 1.5V AA lithium battery. It is made for wireless and content-critical film and video production devices, such as wireless headsets, audio transmitters and receivers, field recorders, timecode boxes, slates and microphones.
It uses lithium battery technology and has a leak resistant construction. It weighs one-third less than a standard alkaline battery. It lasts up to 9x longer in digital cameras than Energizer MAX, though results vary by camera.
It performs in temperatures from -40° F to 140° F and holds power for 20 years when not in use. The batteries are sold individually and are also packed in bulk boxes of 20 or 50 for quick battery swaps.
