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  #1  
Old 05-30-2014, 05:10 AM
audiogene audiogene is offline
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Default Clip Zip Rockbox low battery runtime.

So i used to get about 15-17hrs of playback (rockboxed) when i first got my clip zip in november last year, but after putting the microsd (Sandisk 16GB sdhc class 4), i am only getting 8-10hrs of playback, i thought it was display, so i ran a battery bench with display off the whole time, vol at 32db, about 650 songs on shuffle (all on sdcard, mix of flacs, vbr and 320kbps cbr), connected with my normal listening SoundMagic E10's and was shocked to see the runtime for just <8:30hrs, i have seen people getting >15hrs of battery with micro sdhc cards, so how to determine what's causing the battery drain? do i have a bad battery?


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  #2  
Old 05-30-2014, 07:53 AM
skip252 skip252 is offline
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Welcome to ABi

Having a card inserted and playing files from it shouldn't make a difference. Notice I said "shouldn't" not "doesn't". There have been reports in the past that it does but when I did battery benches it didn't for me. When others did there were a couple of results that indicated it did for them.

If you want to verify the card is what's causing the difference you need to run more tests. I'd run a series battery benchmarks using the test methodology outlined here http://www.rockbox.org/wiki/BatteryRuntime. Make sure to control any other possible variables by using the same build and files playing in each case.

I'd at least run one with the card removed and all the files played from the internal memory. Then another with the files all on the card. If there's a significant difference in runtime that indicates having a card inserted is the problem. If there isn't and the results are still that low that points to a change in Rockbox or the battery.

You said you were getting much longer runtime at one point. If you determined that with a battery benchmark test the build used is part of the info included. If you still have those results or that build available you can test using that again. If your results with that build is significantly better somethings changed in Rockbox. The Rockbox devs need to know what build that has the better runtime so they can bisect and try to track down what has negatively impacted battery life.
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  #3  
Old 06-01-2014, 07:46 PM
saratoga saratoga is offline
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You could test again without the card to see if something is wrong with it.

SD cards are little microcontrollers that use power. FWIW, when i tested on the clip+ a few years ago, adding an SD card reduced runtime by about 10 minutes total. I think that is typical but its possible they could use more.
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  #4  
Old 06-04-2014, 10:35 AM
audiogene audiogene is offline
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Quote:
Originally Posted by skip252 View Post
Welcome to ABi

Having a card inserted and playing files from it shouldn't make a difference. Notice I said "shouldn't" not "doesn't". There have been reports in the past that it does but when I did battery benches it didn't for me. When others did there were a couple of results that indicated it did for them.

If you want to verify the card is what's causing the difference you need to run more tests. I'd run a series battery benchmarks using the test methodology outlined here http://www.rockbox.org/wiki/BatteryRuntime. Make sure to control any other possible variables by using the same build and files playing in each case.

I'd at least run one with the card removed and all the files played from the internal memory. Then another with the files all on the card. If there's a significant difference in runtime that indicates having a card inserted is the problem. If there isn't and the results are still that low that points to a change in Rockbox or the battery.

You said you were getting much longer runtime at one point. If you determined that with a battery benchmark test the build used is part of the info included. If you still have those results or that build available you can test using that again. If your results with that build is significantly better somethings changed in Rockbox. The Rockbox devs need to know what build that has the better runtime so they can bisect and try to track down what has negatively impacted battery life.
Quote:
Originally Posted by saratoga View Post
You could test again without the card to see if something is wrong with it.

SD cards are little microcontrollers that use power. FWIW, when i tested on the clip+ a few years ago, adding an SD card reduced runtime by about 10 minutes total. I think that is typical but its possible they could use more.
Thanks for the input, ok i would test it without microsd and post results here..
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  #5  
Old 06-13-2014, 04:28 PM
audiogene audiogene is offline
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Sorry for the delay, wasn't getting enough time to test the player, so i trimmed my playlist to about 250 songs with the similar file types, removed the memory card and let it play in the similar settings as in the previous test, well, got slightly less time in this test, so the card is not at the fault.. But still can't say what's causing the drain, bad battery, or something eating up the CPU? does themes have any affect on battery considering the display is off the whole time? Shall i try with re-installing and testing with default rockbox configuration?
As i have numerous themes installed but use:
WPS: http://themes.rockbox.org/index.php?...t=sansaclipzip
Radio: http://themes.rockbox.org/index.php?...t=sansaclipzip
Base Theme: http://themes.rockbox.org/index.php?...t=sansaclipzip

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  #6  
Old 06-13-2014, 06:18 PM
Carson Dyle Carson Dyle is offline
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If you have Rockbox installed then you can still boot into the SanDisk firmware. Run a similar test using the original firmware to either confirm or dispel any notion that Rockbox is the reason for the decreased battery life.
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  #7  
Old 06-13-2014, 08:01 PM
Enigmatic Enigmatic is offline
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Quote:
Originally Posted by audiogene View Post
So i used to get about 15-17hrs of playback (rockboxed) when i first got my clip zip in november last year, but after putting the microsd (Sandisk 16GB sdhc class 4), i am only getting 8-10hrs of playback, i thought it was display, so i ran a battery bench with display off the whole time, vol at 32db, about 650 songs on shuffle (all on sdcard, mix of flacs, vbr and 320kbps cbr), connected with my normal listening SoundMagic E10's and was shocked to see the runtime for just <8:30hrs
Did you also do a battery benchmark in November?
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  #8  
Old 06-14-2014, 12:34 AM
audiogene audiogene is offline
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Quote:
Originally Posted by Carson Dyle View Post
If you have Rockbox installed then you can still boot into the SanDisk firmware. Run a similar test using the original firmware to either confirm or dispel any notion that Rockbox is the reason for the decreased battery life.
hmm, yeah, i'd try with original firmware as well as stock Rockbox, i have re-installed it..
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  #9  
Old 06-14-2014, 12:36 AM
audiogene audiogene is offline
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Quote:
Originally Posted by Enigmatic View Post
Did you also do a battery benchmark in November?
not actually with battery bench, but i was on my way to another city and journey was 20hrs, rockbox almost made through whole journey, so it should be about 15-17hrs..
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  #10  
Old 06-14-2014, 05:44 AM
Enigmatic Enigmatic is offline
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Quote:
Originally Posted by audiogene View Post
not actually with battery bench, but i was on my way to another city and journey was 20hrs, rockbox almost made through whole journey, so it should be about 15-17hrs..
The more charge cycles a battery goes through, the less the battery’s ability to hold a charge. The more time that passes, the less the battery’s ability to hold a charge.
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  #11  
Old 06-14-2014, 07:32 PM
Carson Dyle Carson Dyle is offline
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Coincidentally...

Yesterday I was cleaning off a desk in the corner of my office and found my old Fuze v2 that I don't use much any more. It was covered in about 1/4" of dust. Wiped it off, turned it on and it reports a 75% charge. It probably hadn't been charged in six months. Meanwhile, my Clip Zip loses a full charge, not even playing anything, in just a few days.
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  #12  
Old 06-15-2014, 12:04 AM
Mikerman Mikerman is offline
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Quote:
Originally Posted by Carson Dyle View Post
Coincidentally...

Yesterday I was cleaning off a desk in the corner of my office and found my old Fuze v2 that I don't use much any more. It was covered in about 1/4" of dust. Wiped it off, turned it on and it reports a 75% charge. It probably hadn't been charged in six months. Meanwhile, my Clip Zip loses a full charge, not even playing anything, in just a few days.
Well, that's just because the Zip is, well, zippier.
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  #13  
Old 06-15-2014, 05:24 AM
Enigmatic Enigmatic is offline
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Quote:
Originally Posted by Carson Dyle View Post
Meanwhile, my Clip Zip loses a full charge, not even playing anything, in just a few days.
I did not use my Clip Zip for several weeks. When I turned it on, the battery-charge status showed 100%.
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  #14  
Old 06-16-2014, 04:43 PM
RBX RBX is offline
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http://anythingbutipod.com/forum/sho...1&postcount=17
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  #15  
Old 06-17-2014, 04:25 PM
audiogene audiogene is offline
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ok guys, so i reinstalled rockbox and tested with default config (just increased treble, bass and stereo width), same settings as OP, without running battery bench, total runtime was about 10hrs.

Tried with sansa's OF, got ~8hrs, so anything more to test or i can say that the battery has actually gone bad just in 2-3 months of purchase? Does charging with a phone charger (Nexus 5, 5v) degrades the battery, as i had been charging the sansa with it.

Quote:
Originally Posted by Enigmatic View Post
The more charge cycles a battery goes through, the less the battery’s ability to hold a charge. The more time that passes, the less the battery’s ability to hold a charge.
but i usually charge my sansa once a week or two, mostly i listen from it 1-2hrs. every 1-2days, so it usually lasts more than a week this way, i don't think that it has been charged that much to exhaust charge cycles seeing that i have been getting these runtimes since feb.

yeah, thought of trying that, but all the tests with battery bench were untouched, and without it were just occasional screen on to see the battery stats. but it's still useful, thanks.
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  #16  
Old 06-19-2014, 09:37 AM
RBX RBX is offline
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Quote:
Originally Posted by audiogene View Post
yeah, thought of trying that, but all the tests with battery bench were untouched, and without it were just occasional screen on to see the battery stats. but it's still useful, thanks.
I get about 50% increased runtime in day to day use by using the no backlight on keypress patch. If you are doing a battery bench without using the player as you normally would, of course there won't be much difference.

There's only so much leeway when you are dealing with a 300mah battery.
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