[Nexus 5 General] hicks12:
Em the settings are different for 4.4 but the "battery saving" mode that I used for location is using Wi-Fi and mobile networks to estimate location, so I assume its very similar to that setting.

No in 33 hours I managed 2hrs 50 min screen time, the screen time metric means nothing out of context as when my screen was on I was browsing the web, running benchmarks reading news articles via a few media applications, sending text messages and some other things at 100% and auto brightness settings about 50/50 so really that screen on time could be extended to 4 hours.

The impressive feat is on the MOBILE connection, not once did I log on a WiFi access point as my N5 ran straight off the Three network and you can see that my signal was okay for the most part, not amazing but still okay, in my use case comparing it to two Nexus 4s with multiple roms and kernels trying to eek out that extra hour, the N5 runs rings round them for overall up time.

If I ran it in airplane mode with WiFi only and 10% brightness I am sure it will beat the N4 result by a large margin but its not how I use my phone as I need it mobile and the other part is this isnt with a large amount of music, normally I use Google music for 4 - 7 hours a day while working so the fact the N5 can offload this to the specific DSP means even less power usage.

Back to the matter regarding the CPU being faster etc, I should have added more to that comment and I apologies what I mean is this...

CPU is faster clock for clock and is a higher clock so if given a task it can complete it faster (excluding games) therefore it can drop to idle much faster reducing the overall power expended within that timeframe. Further to this the CPU is more efficient than the S4 in the N4, clock for clock if the 800 was at 1.5ghz it will use less power and this is the joy of increased yields, improved architecture and a new process from TSMC which is the 28nm HPM vs the S4s 28nm LP, the core voltage is lower meaning less power usage. I know the S4 cores at 1.5ghz were using up to 750mW per core and Qualcomm said that the 800 would vastly improve on performance of the S4 while sticking to this 750mW usage, I havent seen any power benchmarks but if they said it and its a better yield and a better process then I would atleast expect this to use a lot less power at 1.5ghz and probably about the same around 2ghz mark.

Your analogy with cars isnt right either, compare any car with its previous years model and AT THE SAME SPEED it will use less fuel because it is more efficient, I am sorry but I must ask do you really know what efficient means? Because you say it doesnt matter how efficient it is it will still use more which is really wrong lol, being more efficient in this context means getting more performance out of the same input i.e you fill up your car and it gets you 200 miles where as the newer car gets you 300 miles at the same use case.

Technology is easier to improve upon and thats why there can be a drastic change in performance each generation yet the power consumption goes down or stays the same.

And you say you're trying to warn people off that XDA has 90% false reports which I think is wrong, I and many others simply shared our own battery life experiences, if someone is looking for a result that will 'decide' their purchase for them then all they need to do is look for the results that match or are at least similar to someones here and that result should be okay, thats why CONTEXT is key for these results and the reason why most of us include our usage with it so people can judge for themselves. Just point out to people they need to read into the results that is all.

Finally I remember a few other things that were running on my N5, I had Facebook with chat on and refresh of 4 hours (i did look at facebook a few times!) and google+.