12 hours remaining... yeah, right.

[FourOhFour]

Oh, I wish. Actually, it showed 17 before I managed to get a screenshot.

Now it's showing 4:51. That's more like it.

[Chris]

Does this happen frequently? If so, you can capture a log so I can see why that's happening. Use the steps here:
http://osirisdevelopment.com/wiki/Submit_a_bug_report

BatteryBar's time estimation does two things:
1) It calculates a time remaining based on history averages of number of seconds each percentage point takes to discharge
2) That value is adjusted based on an accuracy measurement. The accuracy measurement measures that actual amount of time elapsed while running on battery versus the estimated time elapsed. It calculates a ratio between the two and adjusts the display accordingly. For example, if you're watching a movie, you'll see the time estimation drop. If you're not doing anything and the screen is off, you should see the time remaining go up. My guess is that the accuracy calculation got messed up somehow. I'd like to see a log if you can reproduce the issue.

[FourOhFour]

I've only seen it once. And it isn't nearly as absurd as the 120 hour calculation I've seen OS X give.

[Chris]

Well at least you know what's going on now. I do think I should put some limits on the accuracy calculation, such as nothing below 50% or above 150% of normal usage.

[Sovereign]

(02-19-2010 05:01 PM)Chris Wrote:  Well at least you know what's going on now. I do think I should put some limits on the accuracy calculation, such as nothing below 50% or above 150% of normal usage.

Well, define "normal usage." My "normal" usage is 4-5 hours, but if I turn off wireless, dim the screen down, terminate background processes and run only one app (OneNote) I can get 7 real hours out of my computer. My computer is an energy-hungry Inspiron E1505. I'm betting that some smaller computers can see even greater variance in power usage from "heavy" to "light" usage.

In my case I'd be getting 140% of "normal." Not outside your range, just food for thought.

Also, regarding "nothing below 50%" if your battery begins to die, it will have a lifetime possibly less than "50% of normal usage." Further, if your computer essentially has all its power saving features turned off (portable gaming mode) it may be possible to breach the 50% lower value.

[Chris]

I haven't actually implemented that idea.

[Zyxmon]

Time estimates of BB Pro 3.3.3 are weird. I have never seen such estimates in 3.3.2.
I have fully charged my battery. My usual total time estimate by BB is 7+ hours. After some 20-30 minutes on battery I noticed an estimate in the tray 6+ hours. But what is strange this time was growing. Here is the picture

I was doing web browsing using the power scheme I usually use, reading the usual sites and forums. The power consumption was quite usual.
here are some lines from BatteryBar.Profiles.xml

Code:

<PercentTime Percent="84" Time="271" Samples="4" />
      <PercentTime Percent="85" Time="269" Samples="5" />
      <PercentTime Percent="86" Time="267" Samples="5" />
      <PercentTime Percent="87" Time="261" Samples="5" />
      <PercentTime Percent="88" Time="256" Samples="4" />
      <PercentTime Percent="89" Time="222" Samples="3" />
      <PercentTime Percent="90" Time="261" Samples="3" />
      <PercentTime Percent="91" Time="285" Samples="3" />
      <PercentTime Percent="92" Time="299" Samples="4" />
      <PercentTime Percent="93" Time="312" Samples="5" />
      <PercentTime Percent="94" Time="330" Samples="4" />
      <PercentTime Percent="95" Time="281" Samples="4" />
      <PercentTime Percent="96" Time="256" Samples="5" />
      <PercentTime Percent="99" Time="0" Samples="1" />

[Chris]

If you use less battery than usual, BatteryBar makes an adjustment for that. It does this by comparing the actual time that the computer has been running to the estimate time it should have run.

Right now there's now way to see what that ratio is without generating a debug log. Perhaps it would be a good idea to include that information somehow.

Turn on debugging by holding SHIFT while you right-click on BatteryBar. In the log file you'll see some entries about the Accuracy ratio/percent. That value is multiplied against the time remaining to make the adjustment.

[Zyxmon]

Chris I think the weird estimate is due to the line PercentTime Percent="99" Time="0" Samples="1". I usually do not charge my note when it is on. This time I've inserted power plug when working with note. After the battery was fully charged I have pulled the power cord off after some 10-20 minutes. That gave me (after the power adapter was pluged off) not 100% but 99% - this makes this record. It is also strange - there are no records with 98% and 97%. I am sure this charges (98% and 97%) lasted some time (some minutes).
I have already send you the debug log on the problem described here - http://osirisdevelopment.com/forum/threa...tml#pid266 (jump at 50%). This jump also ocures in 3.3.3.

[Chris]

The fact that your battery profile doesn't contain data for 95-98 percent wouldn't cause the time remaining to increase as you discharge. The fact is, those data points that are missing are extrapolated based on surrounding data points, so those points will be estimated at approximately 250-300 seconds each.