Do medic and ammo bags run out after a certain number of uses, or after a certain amount of health/ammo dispensed?
Solution 1:
It's both actually! Ammo bags and Doctor bags act differently in this regard.
Ammo bags have a set amount of ammunition that depletes depending on how much you take. It'll initially have enough to fully reload a weapon 4 times, which can be increased up to 10 times through upgrading.
Doctor bags, however, have a set number of uses. It starts off at 2 and increases to 5 through upgrading.
Due to this difference in functionality, feel free to just top off your ammo when you need it from an Ammo bag, but don't do the same for the Doctor bag because you'll essentially be wasting a use that may be better off saved for someone else or when you really need it.