This 7A Safety fuse is designed to add protection and piece of mind when using an unprotected battery in your Mod Device.  

It magnetically attaches to the positive end of your battery, and when it detects a short it will trip and disconnect the battery from providing power to the device.  

It is an extra safety feature and highly recommended when using unprotected batteries, but that does not mean it makes your device completely fail safe!

The Vapesafe can also protect variable voltage circuitry in some devices, hot springs, and other circuitry that can be damaged from a short.

The fuse will add approximately 3.7mm in length when installed on your battery so it will not fit in all devices.  Please be sure to measure you device to ensure that it will fit before purchasing.