When this happens it normally has to do with the configuration and setup of the tablet. Check to see what apps you have opened and running in the background. Close apps that you are not using. If you have apps that always check for updates, change the setting so that they no longer do. When you are done using an app, close it and don't just click away. The app will stay running in the background and drain your battery. Turn off your location service if you're not using them. This will always drain a battery. Check your setting and turn off all things that you don't use or need. There are many things in the setting that will drain the life of a battery. I finally had to delete the Facebook app from my tablet because it was a major battery drain. I noticed this on a few other apps that I didn't really use much. It is best to get rid of all of them. If you are still having major issues, back up your table to the cloud or your computer. Now do a factory reset. This might be a small pinhole on the side or back of the tablet that you can use a paperclip to reset the table back to factory setting. This will always correct these problems with a tablet. You can easily reload your information back on.