Cars have a specific port for recharging the AC unit, but it's not something you would typically "recharge." The AC unit uses refrigerant, which is a sealed system and doesn't need to be recharged regularly.
However, if you have a leak in the system, you would need to have it recharged by a mechanic at a shop equipped to handle this.
If you're having trouble with your car's AC, it's best to take it to a professional mechanic for diagnosis and repair.
