Detailed battery usage?

answered 2014-01-15 20:48:11 +0200

Winfried
1644 ●7 ●11 ●14

My basic monitoring app is work in progress. One problem is that with the current Android-like static power management, the phone goes into a deep sleep soon after the display turns off. At that moment processes are not scheduled and timers don't trigger anymore. So basically any battery app can only show info as long as phone is not suspended (except by preventing the phone suspend altogether, but that will drain your battery).

answered 2014-09-23 16:14:37 +0200

drcouzelis
5165 ●27 ●36 ●35

There is detailed battery usage information in the "System Monitor" application by Basil Semuonov. It is a native Sailfish application. It records system information even when the application isn't running and the screen is off.

https://openrepos.net/content/basil/system-monitor

I'm sorry, I don't know what "sort of like Android has" means (I only use Sailfish) ;) but this application has all of the information that I need. I'm using it right now to view my battery usage over the past week. I love it. :)

answered 2013-12-28 22:00:31 +0200

otto
1461 ●9 ●13 ●13

If you enable developer mode, then you can in the terminal run

devel-su
pkcon install powertop
powertop

Powertop will show details of power usage at a given time. It can also be run to generate CSV or HTML reports.

Nevertheless, it would be good to have battery usage statistics collected by default, shown to user in UI and maybe even sent to some Jolla server for research and development of better power saving optimizations.

answered 2013-12-24 21:58:52 +0200

Penguin
1307 ●19 ●27 ●31

http://I.have/

Own app so everybody doesn't need to install it and it does not consume battery it not needed by a phone user.

answered 2014-09-23 15:35:19 +0200

r0kk3rz
10112 ●108 ●186 ●181

upower -d

this gives a lot of battery stats and is already on every JPhone. This information could be put on the battery GUI

answered 2015-12-12 19:13:00 +0200

palikao
4258 ●55 ●85 ●75

I think that a Battery section in “Settings” is needed, more than a standalone app (like in N9)

answered 2015-02-02 14:27:50 +0200

Philippe De Swert
7698 ●74 ●88 ●91

What information are you actually looking for?

Possible relatively accurate info:

• current voltage
• current remaining charge

Not too unaccurate info:

• averaged current charging current
• averaged discharging current
• remaining charging time

Entering the realm of a shot in the dark style info:

• remaining battery life

So why are some of those listed as inaccurate or wildly inaccurate? This has to do with the way the device works. In the past on old style phones the power usage was a bit more predictable as only usage and cell tower recption changes etc fluctuated much. Other fluctuations where less. These days a smartphone has so many difference power points (settings for voltage, speed for power management) and switches so often between them in an attempt to save the maximum amount of power the approximation of power draw starts to be really hard. Also current drawn from the battery changes several times a second when in use. So if you factor in that you might also be moving, and your usage is hard to predict a remaining battery life prediction would only be relatively accurate if you kept doing the exact same thing, in the exact same place, in the exact same conditions. Which we all know will not happen. A rough estimation is definitely possible, but if it can be an hour or two off is it useful information?

Battery statistics etc over a longer period belong rather to an additional app due their potential impact on battery life. No need to log and store weeks of battery data and process it for the use of some. I think we want better battery life for all and decreasing it by collecting stats should be a choice.