I have the standard 510 passthrough (with the 10440P 340mah battery). I have been reading about how the actual voltage on the regular 510 battery is around 3, 3.1 or so. I don't have a volt meter. If anyone does, and has the same passthrough, would you mind checking for me? I'm getting a Vypr 510 in a couple of days too, so I'm just curious about how it will compare with my PT. Thanks!
