Usage Tips:Description This versatile emergency charger and external power box is designed specifically for safe boxes and anti-theft door locks. It ensures that your security devices remain operational during power outages. The sleek and compact design allows for easy installation and portability, making it an essential accessory for maintaining the functionality of your security systems. Features - Color: Black-Material:Plastic-Size:27.00X6.50X1.80cm/10.61X2.55X0.71in-Multifunction design: the safe box emergency charger external power box serves multiple purposes, providing a comprehensive solution for various needs.-High security: utilizing advanced antitheft technology, it protects your valuable items from theft, ensuring peace of mind.-Portable convenience: its compact and lightweight design makes it easy to carry and install, suitable for various scenarios.-Long battery life: the backup battery box offers extended power support, ensuring your devices remain operational at all times.-Strong compatibility: the universal design is compatible with various safe box and door lock brands, making replacement and upgrades easy.Package list: 1 x Battery Box