Listen up: We tested 15 AA batteries—the type typically ... Battery life was 7.3 hours for an Energizer, 6.8 hours for a Duracell, and 4 hours for a Toys "R" Us battery.

He pitted three cheap AA battery brands -- Sunbeam High Drain, Panasonic, and a generic CVS brand -- with three more pricey options -- Duracell, Energizer Ultimate Lithium, and Duracell Quantum.

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 ...

battery capacity and price that you need to consider. The Duracell Rechargeable AA Batteries have a capacity of 2500mAh and come pre-charged out of the box. The batteries have a good shelf life ...