How to recharge a Staff in Skyrim [duplicate]
Solution 1:
To recharge a staff, go to your inventory, and select the staff. If you're on Xbox you can press RB to recharge it with soul gems filled with souls. If you're playing on PC/PS3, it'll say "press button to recharge" in the bottom of the screen.
Solution 2:
You can recharge a staff in the same fashion as any enchanted item. When you are viewing the staff in your inventory, there will be an option (the button depends on the platform) to recharge the staff using a filled soul gem. The higher the soul the more charges will be restored.