AC Delco
Ultramax
Alkaline with 2,490 mAh capacity. Claims extra long 10-year shelf life. Good internal resistance at 71 milliohms. Made in China.
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Finally! A Battery That's Better Than Energizer And Duracell!
Project Farm
Dec 21, 2025
Ranked #19
2.7
"Alkaline with 2,490 mAh capacity. Claims extra long 10-year shelf life. Good internal resistance at 71 milliohms. Made in China."