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Old 10-16-2008, 06:00 AM   #7
bob_ninja
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Posts: 204
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Join Date: Aug 2006
Device: Zire71
Quote:
Originally Posted by wallcraft View Post
I think this conclusively demonstrates that the DR has a single cell 1300 mAh battery.

Power from single cell 3.7V 1300 mAh battery = 4.8 Watt Hours

Power from four 1.2V PowerEx 2700mAh batteries = 13.0 Watt Hours

This is consistent with 5 hrs vs 12.5 hrs, and also suggests that the DR1000S is drawing about 1 Watt.
Hmmmm, sounds about right except I am still bit confused:

4.8 Wh = 5h = 1A load, 1W power use

Now adding 13 Wh from AAs:

4.8 + 13 = 17.8 Wh / 1W = 17.8 hrs

Assuming both fully loaded DR battery and 4AAs according to this we should get 17.8 hrs as opposed to 12.5 hrs!!!!

Question: Did you use brand new Powerex AAs? Were they broken in? Did they reach their full capacity?

P.S.: Not sure what is the load while charging. Don't have data for 2700. For 2500 at 1A we get about 2.8 Wh, slightly less than the calculation above.

http://www.candlepowerforums.com/vb/...ad.php?t=79302

Last edited by bob_ninja; 10-16-2008 at 06:10 AM.
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