The secret to unlimited battery power is inside that thing, and we won't crack it open for the sake of a world record that no other battery will beat already? ARGH!!!,(reply>), @TheDeathmail It's not like we can't make better batteries, it's that there is always a compromise and for vast majority of users we want a cheap small battery, that will last a few years, not something that costs 100€.,(reply>), Not unlimited power... just the ability to maximize the full power of a small battery... normal batteries, even if you do not use them lose power easily, but this one was able to keep the power and not waste it...,(reply>), I don't think it would be able to last that long with a real load on it. Neat as a novelty; but impractical for any useful purpose. Which is probably why it was never developed further when better batteries were developed for specific loads.,(reply>), No, if they cracked open they will make no money!! I'm sure they have crack some other alike and that how they figure out how to make battery now days with just 5 percent battery same thing with our life now day....make sense.....big conspiracy behind this all of this.....,(reply>), The bell uses power and an AA battery would lose its charge after a few years (batteries kept on shelves lose their charge in 2-5 years). So no matter what you say, this battery is amazing.