The Goa'uld staff weapon use a small tube of green liquid naqahdah as power source, and it last many many yr.
The Ori staff weapon use a crystal as power supply,for a brief period ,it's power level equal to two Naquadah generators (Episode Bounty, when Sam use a piece of Ori crystal to replace two fail Naquadah generators)
Continuum spoiler
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An energy weapon power by Naquadah generators must be powerful, but can Earth bulit some super power battery
The Ori staff weapon use a crystal as power supply,for a brief period ,it's power level equal to two Naquadah generators (Episode Bounty, when Sam use a piece of Ori crystal to replace two fail Naquadah generators)
Continuum spoiler
*
Spoiler:
An energy weapon power by Naquadah generators must be powerful, but can Earth bulit some super power battery
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