HouseHoldHacker decided to test some batteries for you with some standard flashlights. It’s not exactly the most scientific way to test batteries but it gives you a pretty good idea.
Our testing process was fairly simple but effective. We used the exact same brand of flashlight (Maglite Xenon) all straight from the box. Each pair of batteries tested came from different stores around the Portland, OR area. Set 1 came from Fred Meyer, set 2 from Target and set 3 from Safeway. We did this to make sure we used different shipments and manufacturing dates from the battery companies.
While the procedure was not necessarily scientific, it gives you an indication of what you might expect when purchasing not only batteries, but any product on the market today.