The Energizer AA batteries are rated at 2200 mAh and the Duracells at 2000 mAh (that’s milliampere-hours, a measurement of energy charge). But the Duracells last a lot longer.

Best 9V: EBL 9V Battery and Charger; Best C: Energizer C Battery; Best D: Tenergy High Capacity D Battery; Best 12V: Optima 12V Batteries RedTop; Why should I use rechargeable batteries?

Even when everyone agrees a battery is great, like Energizer Ultimates, ... Overall, though, the other Amazon alkalines performed quite well, and the 9-volt batteries amazingly so, ...

America’s top battery brands are locked in a power struggle over battery life claims. Duracell has filed a lawsuit against Energizer, accusing the rival battery maker of running a deceptive ...

Duracell has filed a lawsuit against Energizer, accusing the rival battery maker of running a deceptive advertising campaign. In a complaint filed in federal court in Manhattan on June 13, ...

NEW YORK, June 16 (Reuters) - Duracell has sued Energizer, accusing its rival of misleading consumers in a nationwide TV and online ad campaign about whose alkaline batteries last longer. Sign up ...