Power up your devices reliably with this 9V 300mAh NI-MH rechargeable battery. Built with advanced nickel-metal hydride technology, this battery delivers consistent power output while being completely rechargeable for multiple uses. The 300mAh capacity ensures long-lasting performance for your electronic devices, from smoke detectors to musical instruments. Its durable construction maintains charge retention when not in use, making it ideal for both frequent and occasional use applications. Perfect for replacing traditional disposable batteries, this rechargeable option helps reduce battery waste while providing dependable power. The standard 9V form factor makes it compatible with a wide range of devices that use 9V batteries. For optimal performance, charge fully before first use and store in a cool, dry place when not in use.