[Nexus 5 Q&A, Help & Troubleshooting] kyinx:
Star & Report this issue to Google here:

http://tinyurl.com/pgcmfma​

********** UPDATE 19-NOV-2014 **********

Test 3

: Battery Consumption Lollipop 5.0 [LRX21O] vs KitKat 4.4.4 [KTU84Q] (4h 30m)

[LINK TO POST IN THREAD

HERE

]​

Scenario

:

STOCK + ROOT + SELinux Mode (Permissive) + GSAM Battery Monitor (Root) + Whatsapp + Viber + Stock Apps Only

WiFi: ON

WiFi Notification: OFF

WiFi Scanning: OFF

Cellular Network Mode: 3G

NFC: OFF

Google Now: OFF

Brightness: AUTO/ADAPTIVE

OK Google: ON (Default)

Location Mode: High Accuracy

Location History: ON

Location Reporting: ON

Alarms: NO

Observations after 4h 30m

:

Initial Charge: 100% (BOTH)

Remaining Charge: KitKat - 74% | Lollipop 67%

Power Consumption Per Hour: KitKat - 5.7% | Lollipop - 7.6% (~2%/hr MORE)

Total Battery Consumption: LOLLIPOP CONSUMES 7% MORE

[Note: In KitKat Phone & WiFi were significantly more used]

Application/Service Specific Battery Consumption: LOLLIPOP CONSUMES 8% MORE (APPROX)

[NOTE: KitKat Phone Call - 1h 45m while Lollipop Phone Call - 45m]

Screen Consumption: LOLLIPOP CONSUMES 11% MORE

Phone Radio: KitKat = LOLLIPOP

WiFi: LOLLIPOP CONSUMES 1.7% MORE (MATHEMATICALLY PROJECTED)

Conclusion

:

Overall Battery Consumption of Lollipop is significantly higher than that of KitKat.

The default Battery Stats are inaccurate in Lollipop. It's accurate in KitKat.

WiFi shows as 'Always ON' in Lollipop's default battery stats but it is actually OFF and consumes no extra power. (Thanks to GSAM).

No 3rd Party Applications are causing drain in Lollipop. Neither is WiFi (Scanning always available or Network Notification or Whatever....)

Cast Services in Lollipop are not draining battery.

Project Volta & App Optimizations - Google Apps are expected to be optimized to consume less power. But it seems exactly the opposite.

Android System, Kernel (Android OS) & Google Play Services in Lollipop 5.0 consume 2.5 times more power to run than in KitKat 4.4.4 (6.1% vs 15.3%)

Extremely disappointed with Google. Lollipop 5.0 LRX21O has rendered the Nexus 5 unusable.

The Rest is for you to judge my friends. :)

Thanking everyone for their continued support. Keep Testing. Keep Reporting.

kyinx

********** END OF 19-NOV-2014 **********​

********** UPDATE 16-NOV-2014 **********

Test 2

: Overnight Battery Drain [WiFi OFF] (8h 0m)

[LINK TO THIS POST

HERE

]

[SCREENSHOTS IN CONTENT BELOW]

Scenario

:

Cleared Cache: YES

Initial Charge: 100%

WiFi: 0FF ***** Notice how the WiFi still remains ON in the Battery Stats - Screenshot 1 of Test 2.

Cellular Network Mode: 3G

NFC: OFF

Google Now: OFF

Location Mode: High Accuracy

Location History: ON

Location Reporting: ON

Alarms: NO

Observation

:

Initial Charge: 100%

Remaining Charge: 85% (86% when the screenshot was taken, but dropped immediately)

Total Battery Use: 15%

Unreported Use (Hidden/Masked): 8%

Reported Battery Use: 7% (Summation of individual usage as per battery stats)

Note:

15% of battery consumption in 8h 0m results to 17.81% (18%) in 9h 32m (Mathematically). This is exactly same as Test 1's battery consumption i.e. with WiFi ON.

Whatsapp - 2%

Google Services - 1%

Phone Idle - 1%

Viber - 1%

Cell Standby - 1%

Android OS - 1%

[LINK TO THIS POST

HERE

]

Conclusion

:

The [WiFi ON] battery drain has been consistent with [WiFi OFF] battery drain. [Test 1 = Test 2]

The WiFi service is somehow always ON whether we disable the WiFi or simple put the device in Airplane mode. This is a definite flaw with the OS.

An idle phone with WiFi ON has never ever consumed this much of battery - 16% overnight (as per Test 1). Today's test (Test 2) proves that there definitely is a WiFi Battery Drain Bug in the final version of Lollipop LRX21O.

Such high overnight battery consumption with either WiFi ON or OFF cannot be contributed only to the WiFi Bug. There are definitely other hidden battery drain issues other than this which Google knows but we do not.

50% of battery usage is still unaccounted/masked/hidden. The Developer Preview version of Lollipop shows that the Battery Stats are not incorrect. Hence I believe that Google does/did not want the users to know about the drain by MANIPULATING the stats.

It is now upto Google to come up, acknowledge this issue and fix it. They have already made a fool of themselves by releasing the Developer preview about 6 months back and still not being able to rectify the bug in the final release. I wonder if they actually are listening to us!

I thank all readers and participants of this thread for their support. Kindly continue tracking the battery usage and report observations and fixes if any..

[LINK TO THIS POST

HERE

]

kyinx

********** END OF 16-NOV-2014 **********​

********** UPDATE 15-NOV-2014 **********

Test 1

: Overnight Battery Drain [WiFi ON] (9h 27m)

[LINK TO THIS POST

HERE

]

[SCREENSHOTS IN CONTENT BELOW]

Scenario

:

Initial Charge: 100%

WiFi: 0N

Cellular Network Mode: 3G

NFC: OFF

Google Now: OFF

Location Mode: High Accuracy

Location History: ON

Location Reporting: ON

Alarms: NO

Observation

:

Initial Charge: 100%

Remaining Charge: 82%

Total Battery Use: 18%

Unreported Use (Hidden/Masked): 14%

Reported Battery Use: 4% (Summation of individual usage as per battery stats)

WiFi - 1%

Phone Idle - 1%

Google Services - 1%

Android System - 1%

[LINK TO THIS POST

HERE

]

Conclusion

:

There is something seriously wrong somewhere. 14% of Battery Drain overnight with screen off is ridiculous.

In KitKat the overnight battery consumption used to be 5% (Average) and 8% (Max). This used to be reported in Battery stats and this was not a drain.

Google is surely hiding the battery drain in Lollipop. It is a half baked cake and Google knows it.

I request all users (not only Nexus) to track their battery usage on Lollipop and report their observations. A comparison report with KitKat would be Excellent.

[LINK TO THIS POST

HERE

]

kyinx

********** END OF 15-NOV-2014 **********​

********** ORIGINAL POST 14-NOV-2014 **********

My Device

: Nexus 5 LG-D821 (India). Not an OTA update. Flashed LRX21O Factory Image. Did not use Google or any other Backup & Restore utility. No Root.

Flashback

: Lollipop 5.0 Developer Preview LPV79, LPV81C & LPX13D had serious battery drain issues. Detailed as "Miscellaneous" it was the WiFi Battery Drain bug which bothered all Lollipop users.

Report

: After using my Nexus 5 for two complete charge cycles, I have observed that the WiFi battery drain bug persists and the details are very cleverly hidden by Google. I am framing my observations and conclusion below.

[SCREENSHOTS IN ATTACHMENT BELOW]

Initial charge: 100%

Used: 45% (Summation of individual usage as per battery stats)

Remaining: 10%

Unreported Use (Hidden/Masked): 45%

Wifi was ON the whole time (11h 5m). Consumption: 2% [SUSPICIOUSLY LOW]

uTorrent was downloading over WiFi (3h 14m). Consumption: 5% [LOOKS GOOD]

Phone idle (9h 52m). Consumption: 1% [SUSPICIOUSLY LOW]

Voice Calls (1h 20m). Consumption: 11% [LOOKS NORMAL]

Screen ON (2h 6m). Consumption: 12% [SUSPICIOUSLY LOW]

Conclusion

:

There is about 50% masked battery drain in the final release of Lollipop LRX21O which Google does not want it's users to know.

Google has termed the "Miscellaneous Wifi Battery Bug" as SOLVED by just MANIPULATING the Battery Stats.

At first anyone would be very happy to see that "Miscellaneous" does not appears in the Battery stats and each service uses battery economically. But by observing carefully and refering to the Kitkat 4.4.x battery consumption stats one can easily makeout that the Lollipop battery stats are incorrect. Services are using far less amount of battery than they should (logically) and the device is still draining battery over WiFi.

Google did a hasty job with their final release of Lollipop. They are trying to hide the unresolved bugs.

Project Volta is supposed to give us 30% battery gain and not 50% battery drain.

I request Nexus users to track their battery usage on Lollipop and report their observations.

kyinx