I would suggest, settings-->general-->usage-->battery percentage and turn it off. This will give you time to use for something else during the day.
I tried that but then i stucked with no power on phone in required moment, so i want to check the battery percentage no matter other things you consider are better to do in that micro-seconds, but anyway in some ways you are right but thats another subject
Now what i wonder is if there is a hardware issue because i noticed that battery drains fast recently
Okay so thats software issue apparently, i hope they will fix itAh yep another one! Yup this is happening to all iPhones on iOS 8-8.1. I've been posting/complaining about this same things all over these forums. Apple needs to fix this. Super annoying. Happens while charging too. Turn on your percentage you will see.
https://forums.macrumors.com/threads/1791147/
If you are worried about the battery draining faster than normal I would focus on the usage data Apple provides.
There are others that have mentioned this bug before. I don't think it has anything to do with the actual battery dropping faster at those "spots".
I think ranges and/or calibration are a bit off... My phone keeps shutting down between 4% and 8%.