Strange item in Battery statistics (mirek190 v6.0)

[suisse]

Related to X98 Air 3G, C5J6, tpad2.05 BIOS, mirek190 Android5.0 v6.0 running on it (besides Windows 10):

Might be a dumb question. Also tried search here. But never saw an item

“Over-counted power use” in battery statistics in other Android ROMs.

It’s opening:  “Total battery capacity”, “Computed power use”, and “Observed power use” subvalues denoted in mAh.

Anybody knows what this is about ? Being an engineer in electronics, I know 100% battery indication in handheld units is just a fake to prevent normal people complaining about Lithium batteries not being fully loaded (which for reasons of physical endurance absolutely makes sense). Even know those tricks done in various battery sensors softwares to once in time have the shown fake percents (which are starting at 100%) to  recover with actual physics (which are that load curve is electronically stopped at 85 .. 90%, so you never had 100% and somewhere in time this needs to be reflected properly –> The reason behind strange linear de-load curves ending in a sudden flat stop (at the true value) right after “full load” and while not having done anything on the device).

But what are those shown items I denoted above? Is it something mirek has done to reveal a bit more the reality ? Then how to read those strange values ? Or is it on stock Teclast already ? (Had that one not even 5 minutes on my C5J6 tpad2.05 before pulling over mirek190 v6.0 …)

Cheers, suisse

[suisse]

update:

I maybe have partially understood that over-counted battery stats thing:

To begin with, I’ve now two times nearly fully loaded after being at around 3% my X98 Air 3G C5J6. Currently that item “Over-counted power use” is gone on battery statistics page !

Still see the linear drop from 100% to around 96% while not doing anything on the tablet, after which it stabilizes on that level for hours. Nothing much to be surprised about. That’s what I explained above. 100% has never been 100% and so the battery stats framework need to virtually let it go down to the real value it had once in time, but told you it were 100%. If you are interested and speak German, read

http://www.giga.de/downloads/firmware/news/warum-die-akku-anzeige-von-smartphones-lugt-und-warum-das-gut-ist/

Second, I seems that “over-counted power-use” is something that comes straight from Android, not just mirek’s ROM (Sorry, was not intending to blame you. I love your ROM on the Air 3G, it’s awesome!). I somehow have not seen it on any other device I own. But it looks like the Android framework for power stats can detect that estimated values are wrong based on power profile tables:

https://source.android.com/devices/tech/power/index.html

I assume this over-counted item states that the sum of estimate sub-mAh values drawn is too high. After all you cannot have consumed more than is your maximum physical battery capacity …

I don’t know why this over-counted item is now not showing up any more, but maybe it is sort of calibrated out now, having two times fully depleted and fully loaded (“fully” in the software and not physical sense…).

Cheers, suisse

 

 

 

 

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