maybe the sticker says on it "turn off your device when you are not using it".. thereby.. extending the battery life. a sucker born every minute it sounds like.
I will make a note regarding Tweek's comment about $750 audio cords.. wrong comparison.. i've done studies and A-B comparisons.. i've also gone through multiple steps of upgrading.. and never expected anywhere near as big of a difference, but there always was more than i expected.
There is real science behind it to back up why audio cable sound different.
That said.. if you can't hear the difference, it's pointless to buy it.. i've always bought my more expensive cables on a 100% satisfaction guarantee.. 30 day trial sort of thing..
I do have a 600W/ch main amp that really knows how to push the limits of audio, and i've done direct a-b comparisons with basic cables and my high-end stuff and most people with good hearing in both ears can easily tell the difference.
Ok.. went and checked out batmax site.. and laughed out loud literally when i read 'affects through the cell's wall'.. a passive device that can pull that off.. definitely sounds like snake oil..
Well i'd like to see some 3rd party independent review.. just like the concept of the speaker wires.. once i mentioned to a good bud about how wires can be made so that the high frequencies and low frequencies will go through the cable at the same speed because high frequencies tend to travel on the skin of a conductor and lows go through the center. He looked at me like i was on crack (which haddn't been invented yet).. but let it slide..
Two days later he called me up to say in his ham radio books he just found out that the skin effect is an important consideration due to the frequencies involved.. So.. it's impossible to know if it really is snake oil no matter how crazy it sounds.
If i said that Mr Al accidentally invented a driver that manages to keep the light output constant even though the current changes a fair amount, it sounds crazy, but that's what the meter says when i measure it.. ****oo ****oo :-D
If they are cheap get some, try it.. post the results, if they are bunk it will surprise nobody.. if they aren't bunk, a bunch of use wiseguys can eat some crow.
-awr