any word on whether this exists? tried the 510 batt to 901 atty adapter - works great on 3.7 mods -- but no connection on 5v USB - no power. i want the 901 to rock at 5 volts! how can i do this? loving the 901 (and loving the 510 when it works and does not taste like crap at higher energies) 901 attys (pointy) seem to rock, but 510'a are hit and miss! 
