What is a common characteristic of a non-rechargeable fire extinguisher?

A non-rechargeable fire extinguisher is designed to be used once and must be disposed of after its contents have been expended. This is a critical characteristic because, once the extinguishing agent is discharged, the extinguisher cannot be refilled or reused; it is intended to be replaced instead. This design is typically found in smaller, portable fire extinguishers, which are often used in residential or light commercial settings.

The other choices do not accurately describe a non-rechargeable extinguisher. For example, while some fire extinguishers can be heavy and difficult to carry, many non-rechargeable models are designed to be lightweight for easy use. Additionally, non-rechargeable extinguishers do not have indicator lights; that feature is more common in rechargeable models to indicate the charge status. Finally, the ability to refill multiple times directly contradicts the very nature of being non-rechargeable.