MobileRead Forums - View Single Post - Post-update battery weirdness

Aerlock · 03-05-2007, 07:02 PM

I just had the same problem with reader. I hadn't charged it since I updated about a week after the new firmware came out. My battery ran down and I got the low battery warning so I popped it onto the USB cable overnight and in the morning I still had the liow battery warning. I popped out my memory card and tried again. Same deal. Remembering that sometimes the system can get too low to charge off USB I busted out the AC adapter and again let it charge overnight, this time with the memory card out of it. And guess what!?! I still had the low battery warning. So being the industrious fellow I am (humble too

), I came on here and checked the forums. Finding a link to the reset instructions on the wiki I gave the soft reset a whirl. Surprise! It worked. After a wait that seemed like forever as it powered back on, my battery was back again at 4 bars and everything worked fine. Just another long wait while it indexed my memory card after popping it back in and everything was good to go.

So far it seems like the battery may be lasting longer since the reset. I've not actually measured but when it "died" on me I had about 300 pages left in the book I was reading and I'm about 250 into the next and the bar hasn't moved. Before the reset I seem to recall the battery emptying faster, again no actual measurments but I noticed the battery being about a bar lower after reading a 500-600 page book.

I definately agree that the 7500 page turns is under optimal conditions, 7500+ page book, start reading on a full battery that was charged after loading page 1, never turning the reader off or bookmarking a page, etc.

Also something that occurred to me while thinking about my battery issue, are they ($ony) calling a page turn one change in the screen or do they include the black flash that the reader does before showing the next page? If they're just counting page turns by saying to themselves (fake numbers here folks, I don't know the real ones off the top of my head) the battery has 7.5 watts and it takes 1 milliwatt to change the screen once, so therefore we (by we I mean $ony marketing) can say it's good for (7.5 watts/1 milliwatt= 7500) 7500 page turns, then in actual usage it'd be more like 3750 if the black flash is is a screen change too. Less if you count all the bookmarks, menu reads, power on/off switching, etc. that is done during normal usage of the reader.

03-05-2007, 07:02 PM	#44
Aerlock Member Posts: 15 Karma: 10 Join Date: Jan 2007 Device: Sony PRS-500	I just had the same problem with reader. I hadn't charged it since I updated about a week after the new firmware came out. My battery ran down and I got the low battery warning so I popped it onto the USB cable overnight and in the morning I still had the liow battery warning. I popped out my memory card and tried again. Same deal. Remembering that sometimes the system can get too low to charge off USB I busted out the AC adapter and again let it charge overnight, this time with the memory card out of it. And guess what!?! I still had the low battery warning. So being the industrious fellow I am (humble too ), I came on here and checked the forums. Finding a link to the reset instructions on the wiki I gave the soft reset a whirl. Surprise! It worked. After a wait that seemed like forever as it powered back on, my battery was back again at 4 bars and everything worked fine. Just another long wait while it indexed my memory card after popping it back in and everything was good to go. So far it seems like the battery may be lasting longer since the reset. I've not actually measured but when it "died" on me I had about 300 pages left in the book I was reading and I'm about 250 into the next and the bar hasn't moved. Before the reset I seem to recall the battery emptying faster, again no actual measurments but I noticed the battery being about a bar lower after reading a 500-600 page book. I definately agree that the 7500 page turns is under optimal conditions, 7500+ page book, start reading on a full battery that was charged after loading page 1, never turning the reader off or bookmarking a page, etc. Also something that occurred to me while thinking about my battery issue, are they ($ony) calling a page turn one change in the screen or do they include the black flash that the reader does before showing the next page? If they're just counting page turns by saying to themselves (fake numbers here folks, I don't know the real ones off the top of my head) the battery has 7.5 watts and it takes 1 milliwatt to change the screen once, so therefore we (by we I mean $ony marketing) can say it's good for (7.5 watts/1 milliwatt= 7500) 7500 page turns, then in actual usage it'd be more like 3750 if the black flash is is a screen change too. Less if you count all the bookmarks, menu reads, power on/off switching, etc. that is done during normal usage of the reader. Last edited by Aerlock; 03-05-2007 at 07:06 PM.