![]() The Panasonic Digital Power batteries were not only the most expensive of the alkaline batteries we tested ($2.84 for two), they scored lowest in our tests.īatteries are a benign everyday item, but they do present some dangers if they're used or disposed of incorrectly. Kirkland Signature batteries were designated a Consumer Reports Best Buy, at 90 cents a pair. Unlike alkalines, lithium batteries don't contain a corrosive liquid. We prefer lithium batteries over alkalines for hard-to-access or infrequently used devices, because of lithium's higher stability (lower "self-discharge" or power loss over time). It's a cheaper option than lithiums for high-drain situations (such as often-used flashlights). The top-scoring alkaline battery model-Duracell Quantum-was not significantly different from the high-scoring lithium models, and it costs less than half as much. Within the 13 alkaline brands, we saw a fairly wide range of performance, but seven were recommended by Consumer Reports. But alkalines are far less expensive, and several brands came close to the lithiums in performance. The two lithium models we tested (Energizer Ultimate Lithium and Energizer Advanced Lithium) outperformed all of the alkaline batteries. We repeated each test until the batteries were drained. A second test involved turning a flashlight on for 4 minutes every hour for 8 hours, then leaving it alone for 16 hours. Our toy test mimicked an hour a day of continuous play. Our test scenarios were based on typical battery usage in toys and in flashlights. This year we evaluated 13 alkaline and 2 lithium batteries. So we tested the most popular brands, to make sure you're getting the most energy for your buck. ![]() AA batteries powers many toys, game controllers, and other popular gadgets we get as gifts.
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