The Kirkland Signature (Costco) AA Alkaline is part of the Batteries test program at Consumer Reports. In our lab tests, AA batteries models like the AA Alkaline are rated on multiple criteria ...

Listen up: We tested 15 AA batteries ... until batteries die), a top-rated Energizer lithium took 609 shots; the best of the alkalines, a Duracell, 76 shots; and the lowest-rated alkaline ...

it does appear that Energizer Max outperforms Fusion. But since both are made by the same company and Rayovac Fusion might be ...