The collaboration continues!
Now that the Q1’s have turned up, people are also reporting their battery life figures.
Summary info from the last 24hrs:
- Ctitanic found a great software tool for measuring battery useage. (Notebook Hardware Control)
- Q1 battery - 29W/hr rating. (as marked on battery pack. Reported here.)
- Eo battery - 26W/hr rating. (as marked on battery pack. Reported here.)
- Eo idle battery drain (USB bus disabled) - 13w (2hrs/ 26W/hr battery). Reported here.
- Eo idle battery drain (USB bus enabled) - 17w (1.5hrs/ 26W/hr battery). Calculated from multiple reports.
- Q1 idle battery drain - 10w (2.9 hrs / 29W/hr battery). Calculated from the report here.
- Playing a MPEG-2 on the Eo (with USB bus off and hardware acceleration turned on in WinDVD) - 13.5W. reported here.
- Known USB/power registry hack didnt work as reported here.
Those battery drain stats are significant - they show that even with the higher power Celeron processor, the Q1 design is far far more efficient. The only good result to come out was that the Eo can play MPEG2 quite efficiently. Just under 2hrs worth of MPEG-2 is possible.
One point of note: Although the Eo battery is rated at 26W/hr, the Notebook Hardware Control Tool shows only 24W/hr full capacity. Its also possible that the Eo is switching off before the battery is really empty. More testing is needed here.
Test update:
- Contact Tablet Kiosk and raise a ticket. No update yet. (Over 24hrs since the first contact was made.)
- Measure current drain from the battery during full-power. - Software tool (Notebook Hardware Control) is helping here.
- Measure playback performance / drain with screen off. No update yet.
We’re waiting from feedback from Tablet Kiosk now to hear if they have software fixes available for the USB bus issue. As for the design itself, I hope that Tablet Kiosk and Paceblade will be going back to the designer and asking for improvements.
In no particular order, thanks to:
docbliny, MrGadget, JeffGr, ctitanic, John Tokash, marix, Roy and all the others that are posting information on Origamiproject.com and Origamiportal.com forums.
Regards
Steve / Chippy.
May 11th, 2006 at 2:10 pm
And when I said I was interested in the Q1 in part for its longer battery life, they said I was mad. Mad, I tell you… *grin*
I wonder how Samsung did it… my initial guess was that they’d tweaked the display somehow, as that’s one of their fields of excellence, but that was just a wild guess. It’ll be interesting to see the battery life results compared if folks take you up on that “video while the screen is off” test.
The extra three watt-hours in the battery will help too, but it’s that added idle efficiency that I honestly thought would be won by the VIA-equipped models that’s winning it for the Q1. Weird.
— Steve
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May 11th, 2006 at 2:20 pm
You’re right.
When we compare an unknown OEM and Samsung, who’s going to have access to the best tech?!!
The OEM will learn from this though and I expect they’re looking at their design as we type. However, if Samsung are putting advanced tech from their other divisions into the mix, I guess it will be difficult for an unknown OEM to keep up.
The display-off battery life test is really important at this stage to determine the power-rating of the LCD component.
S.
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