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Old 12-11-2009, 12:39 PM   #1
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Unhappy PRS-500 Battery Life After Epub Upgrade

Another poster mentioned that both his PRS-500s (2) seemed to have shorter battery life after the Epub firmware upgrade.

I, too, noticed the same, at first thinking it was because my 500 is old and the shortened battery life was something I had not noticed before.

But now I have my doubts.

Has anyone else noticed this?
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Old 12-11-2009, 12:57 PM   #2
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Noticing something myself. I fully charged mine before I sent it off and it came back with a half charge. I wonder if the update screws up the charger calibration. I'm going to run it till it dies and see what happens.
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Old 12-11-2009, 01:05 PM   #3
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Both of my upgraded PRS500's run out of juice after maybe 4 days or so. Both used to last for a couple of weeks. So the upgrade is starting to look like the gift that keeps giving (see my good news for Mac owners on another thread.)
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Old 12-11-2009, 09:34 PM   #4
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If I remember correctly, when the 600 was announced, Sony specifically listed battery life based on Sony's format vs. ePub, with ePub eating more power than Sony's format.

So it seems reasonable to imagine a decrease in the amount of time between recharges, all other things being equal...
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Old 12-11-2009, 10:06 PM   #5
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Quote:
Originally Posted by Brandon202000 View Post
Another poster mentioned that both his PRS-500s (2) seemed to have shorter battery life after the Epub firmware upgrade.

I, too, noticed the same, at first thinking it was because my 500 is old and the shortened battery life was something I had not noticed before.

But now I have my doubts.

Has anyone else noticed this?
With all the pluggings in I've been doing since getting it back it's hard to be sure
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Old 12-15-2009, 10:39 AM   #6
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I was getting shorter and shorter times between recharges before the upgrade, so I went ahead and ordered a battery off of Ebay while it was gone. When it came back the battery life was still weak, perhaps weaker. I popped the little 500 open, swapped the battery, and now it lasts even better than when it was new.

I certainly can't say for certain, but it seems our problems stem more from 2-3 year old li-po batteries than from epub.

Just my 2 cents.
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Old 12-16-2009, 10:00 AM   #7
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Originally Posted by taildragger-j3 View Post
I was getting shorter and shorter times between recharges before the upgrade, so I went ahead and ordered a battery off of Ebay while it was gone. When it came back the battery life was still weak, perhaps weaker. I popped the little 500 open, swapped the battery, and now it lasts even better than when it was new.

I certainly can't say for certain, but it seems our problems stem more from 2-3 year old li-po batteries than from epub.

Just my 2 cents.
Can you share your purchasing link and price? I have to charge my 500 every night now.
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Old 12-18-2009, 07:50 AM   #8
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I do think the battery life is a little bit shorter even with my new battery, but it's LOTS better than before I swapped.

Here's a link to the seller:

http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT
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Old 12-18-2009, 09:16 AM   #9
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Originally Posted by taildragger-j3 View Post
I certainly can't say for certain, but it seems our problems stem more from 2-3 year old li-po batteries than from epub.
I asked the Sony Repair guy about this when I was getting the slip to send my reader in for firmware upgrade. He said that they didn't have any way to replace the battery at the same time. It would be another repair order and another whole shipping cycle. Too bad they didn't think of that, they could have gotten my money pretty easily.
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Old 12-18-2009, 07:43 PM   #10
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I was using old lrf's that were on my card so its not epubs that are eating the battery
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Old 12-24-2009, 01:23 PM   #11
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I was using old lrf's that were on my card so its not epubs that are eating the battery
Then it is card issue.
Try to read it from internal memory.
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Old 12-24-2009, 02:44 PM   #12
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Just my $.02 - It's not a card issue. I don't use a card in my Sony, and I've been loading books as .lrf (epub sucks - wish I hadn't done the upgrade). My battery life has been cut to 1/2 or (if I'm being generous) 1/3 of what it used to be.
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Old 12-24-2009, 02:51 PM   #13
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I'm sure the epub books chew up the battery a little more quickly than the lrx format did, but it's a pretty good swap to get access to the epub format IMHO.
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Old 12-24-2009, 03:33 PM   #14
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Just my $.02 - It's not a card issue. I don't use a card in my Sony, and I've been loading books as .lrf (epub sucks - wish I hadn't done the upgrade). My battery life has been cut to 1/2 or (if I'm being generous) 1/3 of what it used to be.
It is really worrying to hear people complain about battery life degradation after the upgrade
I think that you have to start a new topic, maybe even with poll asking people who did the upgrade whether they noticed a significant battery life degradation or not. Then email Sony and include a link to the poll. Maybe it will grab their attention.
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Old 12-24-2009, 04:25 PM   #15
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My observations: I have 2 upgraded 500s and the battery life is MUCH shorter than before. I used to get 10-14 days on a charge with typical reading levels. Now I get 3-4 days. This isn't a subtle effect for me.
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