[anovikov]

What i wonder about is how this scam holds for so long being so easy to test. You attach a simple electricity meter to this and run a lightbulb for a couple weeks, and when you reach the energy spent per unit of device's mass akin to gasoline (say 10 KWh/kg), you are onto something real.

[deletes]

Maybe you should read the paper conducting exactly such tests, where researchers concluded the energy density is at least one magnitude above conventional sources.