Anyone experiencing fast battery drain on their 1520?

Had rapid battery drain for two days, but discovered the culprit yesterday. Yahoo Mail decided to stop syncing but kept trying anyway. Deleted the account then just added it again from scratch. Fixed the problem immediately and battery is back to normal.

Always check to see that your email accounts are syncing normally if you experience sudden battery drain, in addition to the regular check of background apps in Battery Saver.
 
It happened just after I upgraded to 8.1 anyways I use UC browser, uses less resources. Quit IE. Secondly install Battery Saver App and track unwanted program running behind. This helps.
 
for now the only solution to the problem is to change the battery, I personally did all kinds of tests and that's the only solution.

remove the old battery when this average less than 2.4 v. it should be noted that when the clearing had more than 80% load. My problem was later upgraded to 8.1