
I have tried all the so called major brands and some others would never think , like Polaroid, Panasonic, CVS, Walgreens and many more. I tried my own test and ignored the comments of others. I used 3 headlamps that we use for camping, 2 were 150 lumens, the third was 200. I used 3 Rayovac Fusion in 200 and Energizer and Duracell in the other two. I can believe Fusion's comment "alkaline batteries don't last longer". Everything lasted quite a long time on High and Fusion batteries, I'm a fan. They were cheaper and ran at high power for 5 hours until I got bored and turned them off. Nobody leaves their headlight on high power for 5 hours. No, they didn't leak, no, they weren't dead out of the box. Worked as stated. New fan.

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