The cost of recharging a fire extinguisher will depend on the extinguisher, the number needed to be recharged and the professional recharging. “Fire extinguisher” (CC BY 2.0) by SmartSignBrooklyn. On average, a basic recharge can cost anywhere from $10 to $50, depending on the weight of the extinguisher. For example, the fire station in Fridley, Minnesota, allows residents to drop their fire extinguishers off for a recharge, and their fees range anywhere from $9 to $19 depending on the size of the extinguisher.