Testing by MyBroadband revealed that Duracell Optimum batteries offer better performance than other alkaline batteries, but it is not significant enough to influence purchasing decisions.

accusing Duracell of duping consumers by implying that its new "Optimum" AA and AAA batteries are more powerful and last longer than all rival batteries. By Jonathan Stempel NEW YORK, Sept 30 ...

accusing Duracell of duping consumers by implying that its new "Optimum" AA and AAA batteries are more powerful and last longer than all rival batteries. It is only in the "mice-type" fine print ...