[Nexus 5 General] hicks12:
No the numbers do add up, the CPU is faster so it will reach idle quicker depending on the task of course so gaming would certainly be the outlier for draining the battery as you will make full use of the speed and wont reach idle since you're simply increasing the FPS but excluding gaming it should be better as the 800 is much more efficient.

The screen is larger but more power efficient, dont just look at the technology as IPS and the screen size as things have changed behind the scenes although the lack of GRAM was a bit of a disappointment but its still more efficient. Then take into account the radio is built in the SoC which reduces power dramatically and it has envelope tracking(dont believe the G2 has this!) which reduces the power usage even further.

So yes gaming will reduce the battery quicker but most tasks will actually last longer... I must say I lost 1 % battery in 8 hours on mobile network while sleeping and thats with 2 Gmail accounts syncing and news feeds.

I will contribute to this thread and give a very early look into my current battery life on the N5, so far I am quite impressed as the N4 battery life is terrible compared to this and that was on many battery friendly ROMs and kernels with large undervolting so if we just compare it to stock its probably about 60% more than what I got from the n4 :).

So 1 day 9 hours, just a brief summary of things I did:

2 Gmail accounts syncing (about 40 emails a day)

BBC news updating every 4 hours and reading some stores (most of the 6 hour syncs)

Pulse news updating every 6 hours (about 20 feeds) and reading some stores (about 15)

Using hangouts for a few messages along with about 20 SMS

about 20 photos and a 3 minute video (uploaded to Gdrive and G+)

Installing 15 apps (about 500mb download)

running quadrant two times, antutu twice, luxmark both tests, 3d mark test and a few others

Messing around with Google now talking setting alarms and shiz, probably 30 minutes

50 minutes web browsing

Skype for 15 minutes

Google music - Playing for about 30 minutes on speaker

Youtube videos for about 15 minutes

I am sure I missed out some things I did in the time but to me it seems to be much better than the N4 as I said above, I am more impressed with the fact all the Google locations were active and I know it is on "battery saving" mode but it seems to get my location quickly and effectively so everything is active and yet the battery life is by my own opinion "Good", first charge so means bugger all at the moment but I can see it getting better still and the custom rom/kernel scene will improve this further.

I think some people forget that the N4 to achieve these high battery scores you disable location and Google now, I have had everything disabled on my N4 and never matched the performance of these stats in the N4 thread so I would assume alot of people simply do nothing with the screen on or have it low brightness which reminds me, the N5 was on 100% brightness for about half of the on screen time the rest of the time it was auto (was comparing it with things lol).

edit: Forgot to say its all on Mobile network! WiFi I am not sure why it appears there but I think that is simply for the Google location stuff, it was never connected to a WiFi point.

Edit2: remembered I had Facebook on as well with 4 hour syncing and looked at it for about 5 minutes