Recharging paintball canister

Answer 1

If you're implying that you're battery run out then it'll depend on the gun you have but most you'll have to open the gun in order to replace the battery, no gun I ever heard of yet can be charged.

Answer 2

There are two different answers to this.

You either mean a, Paintball Hopper - Which sits on top of the marker and feeds paintballs into the marker, acts like an ammo magazine on real guns.

Or you either mean a Pod - A pod usually carries 100-140 rounds on paint in one pod. You carry the pod in a pod pack and you use it to reload your hopper.

Answer 3

...is possible.

Take it to any local paintball store or any local field.

Co2 and N2 are the common "canister" types and this is what you would refill them with.