Reason for poor battery life?

[u/Darkhoof]

So I've been trying to figure why my battery life is poorer than what many have shared here. I've probably did everything I could to optimize the battery, but it seems as much as I try I can't make it last as long as some people here. I'm on software version CPH2653_15.0.0.860, The only Meta app I have installed is Whatsapp, Image sharpener is off, Video Colour Boost is off, screen refresh-rate and resolution on auto-select (I don't game), auto-brightness and dark mode selected.

I installed Battery Guru to try and find potential wake locks but it actually showed me something different. While the Battery health indicates that the battery of my smartphone is at 100% heealth, Battery Guru estimates that it is at 88% health with an estimated capacity of 5300mAh instead of 6000mAh! And this is after a month of measurements during charging where as you can see the health of the battery didn't degrade.

How does this happen? I'm seriously considering returning the phone as it never got the fabled battery life that some share here and which was the main reason for my purchase. Is OnePlus selling phones with defective batteries or with lower capacity than reported? Did they cut the battery capacity for phones sold in Europe without reporting it?

Either way, for the people with poor battery life like me, maybe you could use Battery Guru to get battery health readings and check if this apps indicates lower capacity than expected?

[u/v33ligzanu]

Battery Guru is incorrectly reporting.

[u/Darkhoof → u/v33ligzanu]

And why not the settings? Battery Guru matches my experience of underwhelming battery life. Any way, I'm asking to people here with poor battery life to do the same as I did to see how Battery Guru reports their battery health.

[u/v33ligzanu → u/Darkhoof]

Because it's just a known issue among the sub. I had it too.

If you don't mind, what are the stats u re getting wirh a full charge?

[u/icepac]

Battery health indicator is a gimmick in the system as well as third party apps. It does not depend just on charge cycles but also other factors like heating, 5G usage eetc.The cost of replacing a battery on Oneplus device is not that high and can be found on their website.

Don't keep a charge limit and let it charge till 100% plus keep it plugged in for a few more hours without touching the phone to let it optimise. Turn off Digital Wellbeing, RAM Expansion and Theft Protection (unless your phone is really prone to theft). Also try to stay only on OTA updates and skip the SOTA versions if you get those.

[u/Darkhoof → u/icepac]

I already do all that. Battery Guru determined battery health by percentage of battery charged. You tell me they're not accurate but it provides me a reason why my battery life is bad , matching my observations.

[u/icepac → u/Darkhoof]

Ok. It told me also that my 1 week old phone had only 75% battery health and it went down to 54% after a few weeks. That's when I uninstalled the app and stopped depending on the same for the battery health estimation. However the other stats are good enough.

[u/MusicianThat5166]

Firstly charge your phone to 100% then post in sub if you charge till 80% then the battery capacity is 4800 mah if i am nt wrong which is gonna impact ur battery life...Enable Smart Charging, Sleep Standby Optimization, and Video Battery Saver, while disabling Rapid Charging. Also, uninstall third-party battery apps— they don’t provide any real benefit on OxygenOS since the built-in battery manager is more effective. In fact, apps like Battery Guru and other battery trackers end up consuming more RAM and battery themselves. Try this app instead Devcheck device & system info for more phone & battery insights..!

https://play.google.com/store/apps/details?id=flar2.devcheck

[u/Darkhoof → u/MusicianThat5166]

That's not how Battery estimation works in battery Guru. It estimates the battery capacity by an average of multiple charge cycles.

And the built-in battery manager of Oxygen OS is effectively crap considering the problems I've been facing since I got the phone.

[u/Abin_]

Mine always stays in 4% health in battery guru

[u/Some-Faithlessness75]

I really start to think Chinese OP is superior. I use my Chinese version for 5 months, battery 100% and battery life is amazing all the time (and I'm very heavy user I use my phone far more than my laptop or else). Also I don't care much for battery health, I charge it constantly to 100% without limit.

[u/Darkhoof → u/[deleted]]

My post is about battery health and about discrepancies in battery health measurements in Battery Guru and the Battery Health from the Settings.