The difference in voltage discharge curves between alkaline and lithium batteries explains why their performance can vary dramatically in certain devices. If you've ever experienced a lithium AA ...

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 ...

Put a set of our Best Buy AA disposable batteries in your most power-hungry devices and they'll last more than three hours longer than the worst. For AAA batteries, our Best Buys last an hour and a ...

The Handytraxx Play is a super-portable turntable that can run on AA batteries; the two Handytraxx Tube models are equally ...

Unlock to see our ratings and compare products side by side The Energizer Ultimate Lithium AA is part of the Batteries test program at Consumer Reports. In our lab tests, AA batteries models like ...

Now, there’s something new: not a new Find My device, but a new case that incorporates external batteries. With an estimated ...

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 ...

Having a ready supply of rechargeable AA batteries on hand could keep hundreds of alkaline cells out of landfill.