11-12-2010, 06:21 PM
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#1 |
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Evangelist
  Posts: 404
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Join Date: Dec 2009
Device: Kindle Paperwhite, Kindle DX, Kobo Aura HD
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Battery life when reading from SD card
Does reading ebooks from the SD card drains the e-ink reader battery a lot quicker than from using the internal storage?
I don't have statistics but my iRiver reader lasts for just a few hundred pages before the battery completely runs out, but iRiver specs claimed that it's able to read 7000 - 9000 pages on a full charge. I always read my ebooks stored on the SD card. I wonder if it is generally the case that accessing the SD card uses more battery power? |
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11-12-2010, 08:31 PM
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#2 | |
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Well trained by Cats
Posts: 29,779
Karma: 54830978
Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
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Quote:
 The same technology storage (flash) is inside your reader. Change your brand of SD Card and see if it helps.  There are crummy cards that don't power down and sleep. |
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11-12-2010, 09:49 PM
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#3 |
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Evangelist
Posts: 404
Karma: 664
Join Date: Dec 2009
Device: Kindle Paperwhite, Kindle DX, Kobo Aura HD
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I'm using a Sandisk card with a 4G storage. Not really sure if it's the culprit, or the battery life as claimed by the manufacturer is just dishonest advertising.
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11-12-2010, 10:01 PM
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#4 |
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Professional Adventuress
Posts: 13,368
Karma: 50260224
Join Date: Sep 2009
Location: The Olympic Peninsula on the OTHER Washington! (the big green clean one on the west coast!)
Device: Kindle, the original! Times Two! and gifting an International Kindle
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you might get more help in the forum related to your device?
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11-12-2010, 10:06 PM
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#5 |
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You kids get off my lawn!
Posts: 4,220
Karma: 73492664
Join Date: Aug 2007
Location: Columbus, Ohio
Device: Oasis 2 and Libra H2O and half a dozen older models I can't let go of
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I have noticed the same problem with my Sony PRS-650 and a 4GB Lexar Memory Stick. The battery dropped a bar after a week of reading from the main memory, now it lasts a day or two at the most before it drops a bar.
Might have to do with indexing the increased number of books, though, and not the card itself. I don't know. |
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11-13-2010, 11:39 AM
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#6 | |
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Well trained by Cats
Posts: 29,779
Karma: 54830978
Join Date: Aug 2009
Location: The Central Coast of California
Device: Kobo Libra2,Kobo Aura2v1, K4NT(Fixed: New Bat.), Galaxy Tab A
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Quote:
Since I don't have a "Total Pages read" counter, I can't state in court that the value is exaggerated  I do get many 300p books read per charge.There are "Laboratory - Life tests" and "Real World (tm) - usage Tests". Advertising will always use the one that looks best Sandisk is a good BRAND. That does not mean that you did not get a bad Card. I don't know the Iriver, but turning OFF my PEZ between reads uses MORE power re-booting and Re-scanning than just locking the keyboard (unit sleeps). There was bad Firmware versions released for my model , that did not sleep properly and depleted the battery. ASK in the Iriver group about firmware to be using. You may have a similar problem) |
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