A method of efficiently collecting a charge for the payment of money for an article of merchandise that are purchased is used in a charge collection system having a contactless storage medium in an article tag which has recorded product information therein, a contactless storage medium in a customer terminal which has recorded customer ID information therein, and a charging device in a store. The briquet is defined by an ashover phase of less than about 10 minutes, preferably less than about 6 minutes and a burn phase of greater than about 90 minutes, preferably two hours and above, with respect to any desired briquet shape. Blade locking mechanisms are incorporated in the walls of the central channels to lock each of the outer blades in an extended position. The computer system indicates for the dynamically changeable system model which managed system objects are available in each version of the managed system. The second catheter is operably couplable to the reservoir such that fluid is capable of flowing from the reservoir to the lumen.