Warp feed question

[Magz_rule]

Im getting a used warp feed from someone hero on AO. They said it runs on 2 batteries but arent sure if its the 12 volt mod or the big cell mod. How can I tell?

[TSalPaintball]

Noramally it is a PTP upgrade and runs off two 9v.

[ChucktheMAGician]

If the batteries are just wired together it's the big cell mod. If something else is in there it's the 12v.