Huawei Ascend P6 — Battery running out way too quick

Hi guys, My phone used to last me a full day no problem. But over the last few weeks it lasts less than 12 ours.
If I go into Settings>Battery I see that Media is running at 72%
If I click inside MEDIA its says INCLUDED PACKAGES> Media Storage/Download Manager/Downloads. I have then gone into Manage Apps and swiped across to ALL. In here I have found those 3 items and forced them to stop to see if that helped. But MEDIA still seems to be eating all the power.

I took my phone back to Vodafone and they say they would have to take the phone and send it away and it will take up to 4 weeks to fix. I cant afford to be without it for that long.

Does anybody have any suggestions how to increase my battery life.

Thanks in advance.
Diskwiz