Very similar to this question, except for Payday 2 instead: Do medic and ammo bags run out after a certain number of uses, or after a certain amount of health/ammo dispensed?
I'm trying to figure out how the Ammo bag and Medic kit work in Payday 2 so that I can optimize use of them. I haven't been able to find any reliable information about their underlying mechanics - but I have discovered plenty of conflicting accounts. I suspect some of it may be from early beta.
It appears as though the Ammo bag depletes based on the amount of ammo picked up. It's certainly something more complicated than a simple number of uses... sometimes it disappears after two uses, sometimes after many. I'm not clear on whether or not it is helpful to deplete secondary ammo before using the ammo bag, or if this simply uses up twice as much of the ammo bag. If it's simple a quantity based thing - then optimal use would probably be to only use your most effective ammunition, and recharge as often as viable.
It appears that the medic kit may be a number of charges as it was in Payday: The Heist. This would mean optimal strategy is to only use it when very low on health.
Can anyone confirm, contradict, or elaborate on these hypotheses?