Battery Samsung S5?

Question

Of what is consuming the battery in a samsung galaxy s5 in a few hours . the
that would be the solution . changing the battery?

Answer 1

When Samsung Galaxy S5 appears on the screen, release the Power key. Immediately after releasing the Power key, press and hold the Volume Down key. Continue to hold the Volume Down key until the device finishes restarting.

Answer 2

The Samsung Galaxy S5 is one of just a few current top-end phones to give you access to the battery unit.
  It's a 2800 mAh in the Galaxy S4.The battery of samsung S5 dies too fast. So think carefully before buying this phone.