Why does my iPhone 5s die fast?

Every time when my iPhone get to 100% I wait 5 more minutes and than when I unplug it it stay at 100% for 1 minute or 2 and than it goes to 99% and 98% is that normal? And that happens sometimes when I wake up and unplug my phone

Battery usage can be affected by a low cell signal, bright display, and GPS running in the background.

How old is your cell? Could the battery be getting weak? Let it discharge most of the way and recharge a couple of times.

Do you ever use your phone while it's charging? That's harmful to the battery. This has happened with my tablet. I think you're going to need a battery replacement

My iPhone 5s seems to have a very good battery life. I help lengthen mine by always

keeping the brightness low,
turning Wi-Fi Bluetooth GPS and location services off when they aren't necessary.
turn off auto sync
Delete any background apps (especially camera)

Do a quick search on the internet to find more ways of improving battery life

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