Customer review from the Amazon Vine Program Never in a million years would I have thought these batteries would outperform Duracell Alkaline batteries. I read recently that a consumer magazine recommended buying batteries based on price and not brand name. My limited testing agrees with that advice.
AmazonBasics AAA alkaline batteries performed better than two types of Duracell Alkaline batteries, and was on par with Kirkland Alkaline brand. The bigger surprise is how well Enloop batteries performed in my testing. The Kirkland and AmazonBasics alkaline batteries were roughly 20% longer lasting than the Duracell alkaline batteries. Freshly fully charged Enloops (NiMH) performed 20% better than AmazonBasics and Kirkland Alkalines.
What can you say about these batteries? Yes they are AAA, they fit in devices that require this size battery, and they last a good long time. I wanted to do some accellerated testing, put the batteries through some heavy drain use in a controlled manner. Since I don't have a testing rig like the one NLee the Engineer uses to test batteries, I came up with a standard device a small electronic flash that uses two AAA batteries.
The test setup: load two batteries into the flash, when the ready light glowed, fire the flash. I counted how many flashes each battery type could make in five minutes. I repeated the test with fresh batteries twice for each brand / model of battery. At the end of the test the batteries were pretty warm and none of them were exhausted. A battery tester showed all the batteries were about 30% spent, so there was still a good bit of life left in them.
Qualitatively, the Kirkland and AmazonBasics Alkaline batteries recycled the flash very fast during the first minute of the test. Recycle times tapered off to a constant level after that. The Enloops (NiMH) seemed to deliver a rapid recycle time throughout the test.
Kirkland and AmazonBasics Alkaline batteries fired 97 times
Duracell Alkaline and Duracell Ultra Alkaline fired 77 times
Enloops (NiMH) fired 117 times
The consumer advice seems to be accurate, purchase AAA batteries based on the lowest per cell price you can find. Enloops are the best alternative, they are rechargeable and deliver great service (Sanyo Eneloop Ni-MH Charger and 8 Rechargeable AA and 4 Rechargeable AAA Batteries). If you do search out rechargeable batteries, the best advice in the world can be found in NLee The Engineer's reviews.
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