Recently, the phenomenon of exploded smartphones is happened more usually , causing damage to property as well as the lives of users. The main cause of the explosion came from their batteries. With a desire to protect users against unfortunate losses that may occur, we have developed an application to manage temperature of battery and notify to user in emergency cases.Main features:- List information about the device's battery- Monitoring the temperature of the battery in real time.- Giving warning when the temperature is too hot or too cold.- Warning system by the color of the background and clear sound.- Guide the treatment in each particular emergency.- Giving tips to prevent the battery from exploding....................- In particular, the interface of the app is very simple to use, user can create widget to monitor battery temperature conveniently