@ vocr,
The VV Batt was released today at one vendor, it only goes up to 4.2,,, However,, There is another one coming that is going to go to upwards of 5.5 real soon, the switch is being worked on for an e-power unit now, there is also 2 others coming as well
A 5.5 volt VV ego would be insane fingers crossed it comes out soon.