Alkaline Battery Ultra Pro 48.5 mmx26.5 mmx 17.5 mm 9V^ Alkaline Battery, Ultra Pro, 9V, Reclosable, Dimensions: 48.5 mmx26.5 mmx 17.5 mm, Capacity: 500 mAh, Suitable for cameras, door locks, smoke alarms and more, professional applications and provide long-lasting, reliable power