• Status Closed
  • Percent Complete
  • Task Type Bugs
  • Category Battery/Charging
  • Assigned To No-one
  • Operating System Sansa e200
  • Severity Low
  • Priority Very Low
  • Reported Version Daily build (which?)
  • Due in Version Undecided
  • Due Date Undecided
  • Votes
  • Private
Attached to Project: Rockbox
Opened by Fed - 2007-07-18
Last edited by bagder - 2007-08-21

FS#7449 - Battery consumption

More battery consumption on recent builds.

Closed by  bagder
2007-08-21 08:00
Reason for closing:  Invalid
Additional comments about closing:   Warning: Undefined array key "typography" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 371 Warning: Undefined array key "camelcase" in /home/rockbox/flyspray/plugins/dokuwiki/inc/parserutils.php on line 407

Not an issue, evidence proves it was a one off.

More details required! Maybe try battery benchmarks on daily builds to see which day the battery life was reduced?

Fed commented on 2007-07-18 09:25

I will try a couple of benchmarks and post them later.

Fed commented on 2007-07-19 13:55

Here are a couple of tests I did. The second is after updating the plugin as noted on the website. I hope this helps.

Saying ‘My battery lasts less time’ isn’t grounds for a bug report. If you have conclusive proof that a recent change has caused this, then fair enough, but the following things need to be considered:

Revision currently
you noticed the battery usage went
that you may be using higher bitrate files, lossless audio, using the backlight more, using plugins more...

The battery benchmark you provided is hard to follow, it splits a few times and is therefore unreliable.

There are so many factors affecting battery life that I’m not sure whether or not this should be closed...

Fed commented on 2007-07-31 01:09

My unit lasts 8 hours when I use no functions at all. Is that normal? I think it was more like 14 hours before (1 month ago).

I will make a better battery benchmark on the lastest SVN and post it tomorrow. If you think it is normal, please let me know.

According to people in the chat this is a few hours shorter than they are getting. However, this means that, rather than the firmware being more wasteful, it’s more likely a problem your end. Are you using the backlight extensively, or listening to high bitrate files? This will cause your battery to run down faster. If you are the only person experiencing a drop in battery life I can’t imagine this is a problem with the firmware.

However, a battery bench would be very helpful if you could do it.

Fed commented on 2007-07-31 17:38

It seems that recent changes have improved things. I got 13 hours this time. It looks like when I do recording, the battery consumption goes faster from that point on, even if I do no more recording.

Here is the test.

Thanks for your help!

That’s odd... Perhaps the recording part isn’t getting shut down properly... But this is the first report of its kind I believe. Perhaps someone should look into this issue before this is closed.

Fed commented on 2007-08-01 12:47

I’m doing another benchmark, but with recording once, then not. I’ll post it later.

Fed commented on 2007-08-02 01:00

Here’s the anther battery_bench. It lasted 12 hours this time, with some recording.


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