Re: Battery losing charge while off [Devel Digest, Vol 75, Issue 63]
On Thu, May 31, 2012 at 12:41 PM, Yioryos Asprobounitis mavrot...@yahoo.com wrote: On 05/24/2012 11:59 PM, Yioryos Asprobounitis wrote: laptop serial number. Was it a pre-production XO-1 ? Both XO-1s used to test the battery are C2 machines #CSH7470023EA #SHF80701C99 The batery in question is #00802091012110003588 So let me review and see if I have all the details. Seems like each new email has more new details. - Battery does not lose charge outside the laptop. - Tested the battery in 2 different laptops and the loss is the same. Roughly 12% overnight. - A different battery in those same laptops does not lose 12% Correct in all 3 (but ~12% in a 24h period) Ah... 24 hours... Looking back you said that in the original email. So 12% is about 370mAh which at the nominal battery voltage should be 2.2 to 2.5 Wh. Over 24 hours that a draw of 90 to 100 mW. Thats high for the EC not going to into stop mode but perhaps there's enough error in the measurement to skew the results. My 1st guess is that something in the battery EEPROM is making the EC unhappy and its not going into stop mode when the power is off. Put the funky battery in the laptop and boot it. Then stop at OFW and do a 'bat-dump-banks'. Then send on the output. -- Richard A. Smith One Laptop per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Battery losing charge while off [Devel Digest, Vol 75, Issue 63]
On 06/01/2012 10:12 AM, Yioryos Asprobounitis wrote: Done See attached screenshot. I don't see anything that looks obviously wrong. So here's a test to see if the EC is going to sleep or not. Run the battery down to where the red LED is active. Then power off the laptop. If the EC goes into stop mode the red LED should go out after a few seconds. If you press a game button the EC should wake up briefly and the led will turn back on then in a few seconds go back out. -- Richard A. Smith rich...@laptop.org One Laptop per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: Battery losing charge while off [Devel Digest, Vol 75, Issue 63]
On 05/24/2012 11:59 PM, Yioryos Asprobounitis wrote: laptop serial number. Was it a pre-production XO-1 ? Both XO-1s used to test the battery are C2 machines #CSH7470023EA #SHF80701C99 The batery in question is #00802091012110003588 So let me review and see if I have all the details. Seems like each new email has more new details. - Battery does not lose charge outside the laptop. - Tested the battery in 2 different laptops and the loss is the same. Roughly 12% overnight. - A different battery in those same laptops does not lose 12% Correct in all 3 (but ~12% in a 24h period) ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
