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Did the new backlight brightness feature increase battery life on the iPod?

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TexasRockbox:
I know the figure is meaningless and I have not run the battery benchmark but I did notice that the estimated battery life jumped from a consistent 12h 00m with a full charge to 14h 17m with a full charge -- with r15804-071125.

Is iit possible the brightness change resulted in a little extra battery life?

saratoga:

--- Quote from: TexasRockbox on November 28, 2007, 06:39:51 PM ---I know the figure is meaningless and I have not run the battery benchmark but I did notice that the estimated battery life jumped from a consistent 12h 00m with a full charge to 14h 17m with a full charge -- with r15804-071125.

Is iit possible the brightness change resulted in a little extra battery life?

--- End quote ---

No, as you pointed out, that feature is meaningless.  It changed because someone changed the total time value for the Ipod 5G.

pixelma:
I thought the original poster was talking about the fact that the backlight brightness is now settable on the Ipod Video and some others at all (since about two weeks maybe) and not about the settings change which came later - but it's not very clear from reading the post.

The backlight is usually one of the bigger power drainers so I wouldn't be surprised if using a lower brightness would lead to an increased runtime. But as already mentioned, a battery_bench would be most helpful to find out for sure. I'm not aware of someone doing one or rather two to compare before and after.

Edit: After reading again I have to add: yes the estimated runtime doesn't tell and is rather useless, you need proper runtime tests to compare.

Yotto:
About 7 weeks ago I did a series of tests (and posted about them here) that showed that the backlight on full on my iPod 5G used up about twice as much juice as no backlight, and a backlight level of "5" (on the 0-15 scale) was much easier on the battery than full brightness was.

This was on an unofficial build because, at the time, there was no official build to test it on.

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