Wow, pretty comprehensive stuff. I'll get back after running some tests. Thanks PW
On Saturday, June 5, 2021 at 5:54:45 AM UTC+1 Xavier wrote: > On Fri, Jun 04, 2021 at 04:27:38PM -0700, 'P Wat' via OsmAnd wrote: > > > >On Friday, June 4, 2021 at 6:19:44 PM UTC+1 Xavier wrote: > > > >> On Fri, Jun 04, 2021 at 04:07:20AM -0700, 'P Wat' via OsmAnd wrote: > >> >[image: OsmAndPowerDrainScreenshot_20210530-184241.png]Has OsmAnd power > >> >consumption been creeping up? > >> >I first noticed the problem several months ago, but have only recently > had > >> >the opportunity to analyse it. > >> >Just normal daily use receiving mail, texts, making the odd phone call, > >> >running Osmand as a map, the consumption is OK. Battery lasts all day, > and > >> >more. > >> >Running OsmAnd for navigation (route instructions, etc) it eats my > battery > >> >in an unacceptable time, eg 45 minutes. > >> > >> First question: Is the phone today the same phone from "a couple of > >> years ago"? > >> > >> Second question: If it is the same phone, is it *also* the same battery > >> from "a couple of years ago"? > >> > >> Also, if it is the same battery (which would also mean same phone) then > >> the batterie's capacity will have dropped in the interveaning years, so > >> the battery will be less able to stand up to heavy current usage now as > >> compared to a couple years ago. > >> > >Hi Xavier. > >Thanks for your lucid response. Questions understood, and the reason for > >them. > >1) Phone - IS the same as a couple of years ago. > > A reasonable comparison then. > > >2) Battery - IS the same as a couple of years ago. > >"Aha! There's the problem"; I hear you cry. And I understand your logic, > >(where you're coming from). I am an engineer and am cognisant of the > >problems of aging batteries, diminished capacity, reduced current > delivery, > >and such. However, in defence of the battery in this instance, I am > >reasonably confident that it is still giving respectable delivery. Daily > >drain under normal circumstances is so far not unduly reduced since new. > > Yes, but, daily drain without the GPS receiver running will be lower > than daily drain plus the current pulled by the GPS receiver. One > possibility is that the additional current draw trips your battery over > a knee where it can't handle the load. > > >Clearly you are technically aware so I'll refer back to parts of my > >original post:- > >a) "Just normal daily use receiving mail, texts, making the odd phone > call, *running > >Osmand as a map*, the consumption is OK". To which I could add listening > >to radio for several hours per evening, and other usage. > > Yes, that does imply a reasonable capacity does remain. Although using > Osmand as just a map, without navigation also running, will likely not > toggle on the GPS chipset as much, so the current drain will naturally > be lower. > > >b) " Battery lasts all day, and more." This phone model does have an > >unusually high capacity battery. It can still easily do 24 hrs between > >charges, but is generally charged overnight. > > Also implies a reasonable capacity does remain. Does not rule out a > critical current draw level above which the battery is unable to cope. > > One possible test to determine if the drain is caused by the GPS > chipset, or by Osmand, might be to install this app briefly: > > https://f-droid.org/en/packages/com.android.gpstest.osmdroid/ > > And run it (with Osmand off, to remove Osmand usage from the picture) > under a similar senario and time as the navigation where you saw the > drastic drop in your posted screen shot. > > If you get a similar drastic drop in the capacity curve, then that > points to the battery possibly having a critical current level above > which it cannot cope. > > If you don't get a drastic drop with the alternate app, then that would > implicate Osmand as a potential cause. > > -- You received this message because you are subscribed to the Google Groups "OsmAnd" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/osmand/090840d3-ef68-4dde-930c-359bcb72e864n%40googlegroups.com.
