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Decrease in battery life after installing 3.11

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jjbjammin:
I was curious if other Rockbox users have noticed a decrease in battery life with 3.11? I have Rockbox installed on a Sansa Fuze (v1) and I use to get around 12-13 hours battery life with 3.10. Since upgrading to 3.11 I now get about 10 hours. None of the settings on the player have changed since the upgrade. Any ideas or suggestions? I guess I could always revert back to 3.10 to get those couple hours back.

bertrik:
Have you actually measured a difference, using battery bench mark for example?
It could be that the battery has just lost a bit of capacity, or that you're unconsciously misjudging the runtime.
Try doing a couple of back-to-back battery benchmark (e.g. 3.10 first, then 3.11, then 3.10, then 3.11) with the same audio material, same volume and same other settings.

Only if that still gives a significant difference, then we can look into it seriously.

jjbjammin:
I was able to run benchmarks for both 3.10 (build 2dc891b-120213) and 3.11. For both tests I used identical settings and had the same mp3 file play on repeat. The benchmark for 3.11 shows that it depleted 50% of the battery in a little over 6 hours while the 3.10 benchmark shows that it had depleted the same amount after 8 hours and 45 minutes. Attached are the benchmark results and my Rockbox configuration settings. Thanks for your help!

tpijag:
With all due respect, you really need to use the benchmark test as designed. Run it to completion.

As you have tested, you have a major confounding variable. You do not know whether you have confirmed a change in battery life or a change in the accuracy of the battery meter.

jjbjammin:
True. These battery benchmarks can be time consuming so I wanted to run a partial on both versions just to see if it was me or the player and it does confirm something has changed with Rockbox since the Feb 13th build. When I have the opportunity I will try to run complete benchmarks on both. Thanks.

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