Is anyone giving or receiving a holiday gift labeled "batteries not included"? We thought so. Listen up: We tested 15 AA batteries—the type typically used in digital cameras, flashlights ...

Don't Buy AA and AAA batteries Our tests uncover the best and the worst. If a product performs so poorly that we think you should avoid it, we call it a Don't Buy. We've tested two AA and three AAA ...

Hit your parts bin and set aside an afternoon to build a wind turbine that recharges batteries. You can see two AA batteries hanging off the side of this small generator. You only need a few parts ...

Our evaluation included extensive discharge tests to find long-lasting alkaline batteries -- including AA, AAA, C, D and 9-volt options. We also considered the cost per battery for each option to ...

It worked fine in all three. Yes. But here's what I didn't know: AA and AAA batteries put out the same 1.2- to 1.5-volts.