CP-E4 Output voltage?

[Flightphoto]

Hi guys,

Bit of a technical one here, I'm thinking of making my own battery packs using LiPo batteries for some HS flashes (580exii etc)
I'm wondering if anyone has a CP-E4 and could measure the output voltage?

There are people quoting 300v online but this isn't confirmed etc, if it's 300v then I'll not bother but if it's just a straight 6v output to match the flash then this will be handy!

I just think it would be handy to use the 3 pin socket instead of butchering the internal battery bay etc

 

[Flightphoto]

Finally found my answer! Upon opening it has a DC converter which ups the voltage to 300V which will give a bit of a sting!

Looks like I'll be buying several more CP-E4's instead!

 

[Tugster]

Cant you utilise the DC converter in the CP-E4 with a larger capacity battery?

If its portable enough, Id also be very interested