A while back, I came across a video on social media showing somebody's wireless computer mouse not working because of dead AA batteries. The user then positioned a much smaller AAA battery in its ...

Batteries are made in certain sizes and shapes for reasons of cost and manufacturability, but in other cases because of ...

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 ...

Low-drain tests show how batteries last in devices such as clocks and smoke alarms – these use a small and steady amount of power over ... We regularly revisit the AA and AAA batteries on sale to see ...