Energizer Ultimate Lithium batteries are long-lasting cells you can use for high-drain devices, such as cameras. In several comparison tests, these batteries perform better than other brands. Experts recommend them if rechargeables are not a viable option.
Outlasts and outperforms other disposable batteries. In ConsumerReports.org's disposable batteries testing, the Energizer Ultimate Lithium cells lasted the longest, taking 1,286 pictures before running out of juice. In comparison, the poorest performer in the test, Walgreens supercell alkaline, was only able to capture 133 photos. The Ultimate Lithium cells performed even better for PopPhoto.com's Zach Honig, who managed to take 5,213 shots without flash and 2,890 shots with flash. In a test conducted by TheGadgeteer.com's Jackie Cheng, Energizer Ultimate Lithium emerged as the best performer, having powered a LED flashlight set to high for six hours and 27 minutes.
Powers energy-hungry devices. In expert tests, Energizer Ultimate Lithiums not only last a long time, but excel at powering even high-drain electronics such as cameras and even CD players. Lithium batteries generally last longer than alkalines, and these are no exception, allowing testers to take thousands of photos without interruption. Honig says that while lithium batteries are generally more expensive than other types of batteries on the market, "their longevity justifies the price."
Review Credibility: Excellent The editors of ConsumerReports.org test a group of lithium, nickel oxyhydroxide and alkaline AA batteries, pitting them against each other by using them with a digital camera. While editors at ConsumerReports.org still prefer rechargeable batteries as they're a greener choice, the publication recommends lithium batteries in the absence of rechargeables.
Review: Batteries: Which AAs Rate an A?, Editors of ConsumerReports.org, December 2011
2. Choice magazine
Review Credibility: Excellent Choice magazine editors test 19 rechargeable and non-rechargeable batteries using a digital camera simulation. Editors recommend rechargeable batteries as the most economical option, but suggest using long-lasting lithium batteries if you don't have access to rechargeables.
Review: High Capacity Batteries Review, Editors of Choice, June 14, 2008
Review Credibility: Excellent PopPhoto.com's Zach Honig tests a number of batteries using an 8-megapixel Canon PowerShot SX100IS and taking pictures with and without flash. Tests ran overnight, and the batteries were used until they were completely empty.
Review: AA Battery Test, Zach Honig, Dec. 16, 2008
Review Credibility: Good Energizer Ultimate Lithium batteries are highly rated by users at Amazon.com. With more than 300 reviews, these batteries retain an overall score of 4.4 out of 5 stars, with over 250 users awarding them at least 4 stars. Those who rate them lower complain that the batteries they received were not packaged properly or that they're too pricey.
Review: Energizer Ultimate Lithium Batteries, Contributors to Amazon.com, As of February 2013
Review Credibility: Good Jackie Cheng tests the Energizer Ultimate Lithium against other rechargeable batteries and alkaline batteries using a TerraLux Lightstar 100 flashlight. Energizer batteries last the longest.
Review: Energizer Ultimate Lithium Batteries Review, Jackie Cheng, June 6, 2012