Can I get some help with a battery issue?

[amit ja]

battery issue

I am using htc 820 dual sim phone its having big issue of battery . Draining even data off n screen is off when i find out that background aap running when screen is off its showing 70%, 75% used by androide os plz help me...plzz

 

[Rukbat]

Re: battery issue

70% to 75% of how much being used? 75% of 1% of battery use is great. 75% of 90% battery use is terrible.

The lines you're looking at are the percentages of the total amount used by each app, they're not the percentage of battery capacity being used.