Lumia 950 battery drains rapidly

Wait a second. You said that I should buy the phone costs 650$ and just turn off all the features that costs that much?

I've been using HTC Mozart (wp7), HTC 8X (wp8), Lumia 1320 (wp8) and everything you said was turned on all the time, and there were not any problems. Lumia 1320  worked 2-4 days without charging, btw it has almost same battery capacity. I'm expecting the same experience with 950/950XL, why not?

All the time windows phone (both 7 and 8) was very optimized operating system that really could use battery effective, much better than some of competitors, and that was one of the most delightful traits of that OS. Looks like that wp10 is just not optimized yet and we got just close-to-release-but-still-beta version.

Yes, your advice is definitely helpful, everything you wrote should help to save the battery, but this is not an option many people wanted. It's like we buying a Ferrari that could ride only 10 miles after gas station.

During initial setup, there is a ton of things that are turned on automatically and you have to turn them off, like location services, sending data about typing, sending data about web browsing...etc...

Also remove unnecessary live tiles that you do not need that require connectivity.

Once you turn all of these off, it saves on the battery...also turn off wifi and bluetooth if you are not using it. I used mine yesterday with minimal usage around 9am and by 11pm it was down to 78% battery left.

I have a Lumia 950 XL and it seems to be doing the same thing.  Yesterday, I had 100% battery then played a game or two and sent some text messages and maybe read a few emails.  In about 3 hours, I had 28% battery left.  My previous phone was a Lumia 928 and it could go all day with more usage.  I contacted Microsoft support and they asked me if I had reset the phone.  They said to backup everything first and then do the reset.  If this didn't fix it, then they said to contact them.  I will be doing that tonight to see if the issue goes away.  It is very hot when I charge the phone and takes much longer than I would expect (easily 7 hours to get a full charge).  The 950 XL is supposed to be liquid cooled but it is very warm to the touch most of the time.  This morning, the charge is going down pretty fast, but not as fast as yesterday.

Me too...7 hours....10% battery....not used much....

I'm having the same issue. Not using my phone any different than previous windows phone. The 950 is dead in 5 hours compared to only 50% for 16 hours of use. Also gets hot