Welcome to the HP Support Forums! It is a great place to find the help you need, from other users, HP experts and other support personnel. I understand that your device is draining the battery faster than expected and running hot. I am happy to help with this.
Please see this document, which shows how to conserve power or how to find which apps or processes are consuming power, so you can choose to disable those services if you are not using them.
It may also help with the heat issue you describe, as lower or slower power use is going to generate less heat. However if you find there is still significant heat, more than has been normal, there may be a physical problem. In that case I would suggest contacting phone support. Please use the following http://www.hp.com/contacthp and create a case for your issue and contact HP. If you live outside the US/Canada, please click the link below to get the contact information for your region. http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
Please let me know how that works for you, and if it does resolve your issue, please mark this post as a solution. Kudos would also be appreciated.
Malygris1 I work on behalf of HP Please click Accept as Solution if you feel my post solved your issue, it will help others find the solution. Click Kudos Thumbs Up on the right to say “Thanks” for helping!