Support and General Use > Hardware
[Clip+, Clip Zip, ClipV2, FuzeV2] Improve battery life, part 2
asymsucon:
--- Quote from: johnb on January 02, 2017, 07:33:37 AM ---When decreasing from +6dB (i.e. in the + range) I hear sometimes a click (similar to transitioning the -40dB threshold).
--- End quote ---
I hear a pop too - sometimes on a +3dB mark going downwards, but it's very faint and almost unnoticeable.
johnb:
the latest build does not improve the SDcard behaviour!
"
the variant 0 gets a little further on the Samsung card: I can browse through the dirs and even select a song. It displays the tags in WPS, but won't ever play.
"
I am now going to look at FuzeV2.
johnb:
Fuze variant 0:
- Samsung card shows the same behaviour as with clip+ -> unusable
- Sandisk Ultra 128GB: worse than with clip+: trying to load a song sometimes seems completely unresponsive, but then recovers. Skipping to next song, it can take 10+ s for the playback to really start.
Volume: going from +3 to +4 playback pauses for a few milliseconds.
asymsucon:
OK, my battery is now fully charged, so I'll test the variant 0.
Still, it seems that the best way to measure this consumption would be on a used opened unit with a PSU instead of 3.7V li-ion battery.
This battery benchmark will produce different results based on 'wear level' of each user's battery and is thus a poor indicator of how much energy was saved compared to dev build.
From your 30-hour figure, that'd be around 38mW during playback (3.7V@290mAh). That's insanely low!
Just for comparison, Fiio X5II consumes about 25 times more, Fiio X7 over 40 times more! :)
--- Quote from: Mihail Zenkov on January 02, 2017, 06:19:03 AM ---Good :) But be warned: at >0 dB it consume more power than current rockbox.
--- End quote ---
I'm curious. How much more approximately? Having an undistorted 1V RMS into 600Ohm load would be worth sacrificing a bit of battery runtime, but depends on how much.
asymsucon:
The battery lasted 9 hours and 14 minutes. Not an improvement from regular version.
During the test the UI was somewhat unresponsive.
Playback through folders, -10dB volume, output loaded with 600Ohm headphones (AKG K240)
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