Rockbox Development > Feature Ideas

Offical Battery Life

(1/3) > >>

Eli Gundry:
When I look at the battery bench page, I really can't get an idea of how long the battery life is. I mean, when you look at Apple's iPod page, they come right out and tell you an amount of time its expected to last, under normal use. As of right now, Rockbox's battery lives are all over the place.

This is what I propose. We have two different pages. One for "Unofficial Battery Benches", which would be the page we have right now. The other would be for "Official Battery Benches", in which each bench follows exactly the same conditions as the others. These conditions would be things like the same playlist/album on repeat, the same WPS, same .config files, same type of headphones at the same volume, etc. And in order to account for discrepancies in hardware, we take several benches and just average them together.

Here are just a few guidelines I'd like to throw out here right now:

-Have Pink Floyd's "Dark Side Of The Moon" on repeat. It's one of the best selling albums ever and many audio professionals use it to test audio equipment.
-Have it encoded in LAME MP3 at 144 kbps CBR. Its between 128 and 192, which I'd imagine is the average bit rate of mp3s.
-Use the default Cabbie 2.0 WPS.
-The volume would be at -15 db. That just seems average to me.
-Album art turned on.
-I'm not sure about if most people turn hold on, but have it on.
-LCD powers off after 5 seconds.

I just want these official benches to mirror a normal users configuration, so if you have and ideas, toss them out there.

Llorean:
Do you have a proposal for how we get a factory new player of each sort with a fresh battery on which to perform these tests?

Battery benches aren't "realistically" useful unless they meet your own use conditions anyway. So trying to match the Apple ones (which are actually 'best case' rather than 'realistic') doesn't seem to do much good.

What good would it actually do users?

Eli Gundry:
As to the first part, you take an average.

To the second part, look at the current battery bench page. All I want to do is kind of eliminate the confusion that comes when you see an iPod Video's run time range from 5 to 20 hours. By doing it my way, you have a constant method of testing pretty much all platforms. It's supposed to sway new users. Most (normal) people will be confused if they see that mess of a runtime page.

And yeah, I suppose Apple's runtime's are best case also, but aren't you supposed to be better than them?

froggyman:

--- Quote from: Eli Gundry on April 12, 2009, 07:50:32 PM ---As to the first part, you take an average.

To the second part, look at the current battery bench page. All I want to do is kind of eliminate the confusion that comes when you see an iPod Video's run time range from 5 to 20 hours.

--- End quote ---

well that happens because of the players being older and some being newer and some being less used and ect. you just can even them out, you just cant unless you were to use all new batteries

Eli Gundry:

--- Quote from: froggyman on April 12, 2009, 08:09:26 PM ---

well that happens because of the players being older and some being newer and some being less used and ect. you just can even them out, you just cant unless you were to use all new batteries



--- End quote ---

The ones with 5 hours to 20 hours are outliers, as they either have old batteries or are using unrealistic settings for their benches. All I want is an average battery life for all players with unified test settings. By taking an average, you can avoid the problems of accounting for old or new batteries.

Navigation

[0] Message Index

[#] Next page