How often do you recharge? - Page 2

ZenEngineer · 06-01-2008, 11:59 PM

I usually add more books once a week, which is often enough that I never get below two bars. I've noticed that Southwest has charging stations at each gate. These charging stations have 110AC and USB slots for charging. The rental car I have now also has a USB slot. Even if I couldn't get my laptop out and use it to recharge, I could plug into these USB charging slots and never bring the AC adapter.

DrMoze · 06-02-2008, 01:32 AM

Quote:

Originally Posted by DixieGal

It pops up a little dialog box saying "Battery low - shutting down" and then shuts down. So I plug it in and keep reading. EB-1150 lets you use the device while it is charging. I get 12-13 hrs per charge. I also got an extra power cord so that I'm able to charge either at home or work, after running out of batteries a couple of times when I didn't have a cord at work.

I'm in love with my cute little reader!

There's no reason to let it drain all the way down before charging. BTW, noticed it's not a Reader you're referring to. (This is the Sony forum!) Does the EB-1150 really have such a short battery life?

Zabuton · 06-02-2008, 01:53 AM

Li-Ion batteries on laptops need recalibration every 30cycles just to ensure the OS reads the battery level correctly. (A full cycle is defined as a complete drain from 100%. For Li-Ion battery, partial cycles are acceptable and accumulated to form a complete cycle)

Assuming this is true for Sony Reader and assuming that it is charged weekly (when it drop by one bar or roughly translated 25%) this would require 30 months before the battery requires a calibration. If the usage is 2 bar/week, then it will roughly requires 15months before recalibration.

Even if you miss a calibration cycle, it is no biggie since the inaccuracies is minimal.

Bottom line - just charge it whenever you want.

astrodad · 06-02-2008, 10:09 AM

Quote:

Originally Posted by ZenEngineer

I usually add more books once a week, which is often enough that I never get below two bars. I've noticed that Southwest has charging stations at each gate. These charging stations have 110AC and USB slots for charging. The rental car I have now also has a USB slot. Even if I couldn't get my laptop out and use it to recharge, I could plug into these USB charging slots and never bring the AC adapter.

Have you actually tried charging your device from the USB ports? I've seen them but I have always been afraid they would drain instead of charge.

RSaunders · 06-02-2008, 11:04 AM

Quote:

Originally Posted by jplumey

Have you actually tried charging your device from the USB ports? I've seen them but I have always been afraid they would drain instead of charge.

If you have a 500, it will not charge from a USB port unless it detects a "friendly" set of drivers. I hear this is fixed in the 505. It is also not possible to charge a "dead" battery from the USB port. If you let it get to the point where it shuts down, you have to use the Sony/PSP power port.

I know these things because I often leave my reader too long in my briefcase. I have a 500, and the cute desk stand. I thought I'd keep it in the stand, always charged up. In practice, it takes a couple of weeks for the battery to run down. I keep it in my briefcase unless I notice that the battery is down to one bar. If I don't notice, then I see the boot screen when I turn it on. Sometimes I can get it to charge off the laptop, but more often than not I have to get my PSP battery backup out to charge it up. All my fault, I can't blame the device.

astrodad · 06-02-2008, 03:10 PM

I'll give it a shot next time I am in BWI. I'll use it down to two bars and then plug it in to see if it charges. I usually end up with nothing to do at the airport except read for a couple of hours, so it should be able to charge it up pretty quickly.

jakeluck · 06-02-2008, 03:32 PM

I recharge my 505 every 10-14 days, reading about 150-300 pages/day. I keep the active reading content on the internal memory to save battery.

Ervserver · 06-02-2008, 05:17 PM

anyone notice if warm/cold weather has any effect on a charge?

DrMoze · 06-02-2008, 11:38 PM

Quote:

Originally Posted by jplumey

I'll give it a shot next time I am in BWI. I'll use it down to two bars and then plug it in to see if it charges. I usually end up with nothing to do at the airport except read for a couple of hours, so it should be able to charge it up pretty quickly.

I'd be VERY careful with that., Actually, I would recommend NOT doing that. I have a 505 (yes, a 505, not a 500) and plugging it into a couple of general USB wall chargers has DRAINED the battery. So, you might find yourself with a dead Reader and nothing to read.

BTW, this draining effect has been discussed previously on this forum.

flamaest · 07-05-2008, 11:30 PM

I have a sony 500..

I noticed I am able to read and listen to music for about 6 hours max. After this time, my reader display battery low message and freeze the screen, but I am still able to listen to music and change tracks for about another 3 hours!

Then the system conks out. So about 9 hours total.

Thanks,
Fabian.

MickeyC · 07-05-2008, 11:47 PM

I've gotten in the habit of doing just that and it seems to work fine.

Ervserver · 07-06-2008, 01:21 AM

me too, once I hook up to add books I let it recharge for a bit

Quote:

Originally Posted by ZenEngineer

I usually add more books once a week, which is often enough that I never get below two bars. I've noticed that Southwest has charging stations at each gate. These charging stations have 110AC and USB slots for charging. The rental car I have now also has a USB slot. Even if I couldn't get my laptop out and use it to recharge, I could plug into these USB charging slots and never bring the AC adapter.

gwynevans · 07-06-2008, 04:52 AM

Note that the critical point being warned about is the use of USB chargers/charging stations, as opposed to a USB connection to a computer.

AIUI, the Sony doesn't recharge unless it's sucessfully 'negotiated' with the charging device - again, AIUI, this is part of the USB protocol, ensuring that devices don't take more power than the chargers want to allocate them. A computer will support this but a basic 'USB power adapter' probably won't. Other devices might just ignore the failure & charge anyway, so you can't assume a charger does or doesn't support it if other devices work.

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06-01-2008, 11:59 PM	#16
ZenEngineer Connoisseur Posts: 65 Karma: 92 Join Date: Feb 2008 Location: California Device: Sony PRS-505	I usually add more books once a week, which is often enough that I never get below two bars. I've noticed that Southwest has charging stations at each gate. These charging stations have 110AC and USB slots for charging. The rental car I have now also has a USB slot. Even if I couldn't get my laptop out and use it to recharge, I could plug into these USB charging slots and never bring the AC adapter.

06-02-2008, 01:53 AM	#18
Zabuton Member Posts: 23 Karma: 14 Join Date: Feb 2008 Device: BB8800/Sony PRS-505	Li-Ion batteries on laptops need recalibration every 30cycles just to ensure the OS reads the battery level correctly. (A full cycle is defined as a complete drain from 100%. For Li-Ion battery, partial cycles are acceptable and accumulated to form a complete cycle) Assuming this is true for Sony Reader and assuming that it is charged weekly (when it drop by one bar or roughly translated 25%) this would require 30 months before the battery requires a calibration. If the usage is 2 bar/week, then it will roughly requires 15months before recalibration. Even if you miss a calibration cycle, it is no biggie since the inaccuracies is minimal. Bottom line - just charge it whenever you want.

06-02-2008, 03:10 PM	#21
astrodad Guru Posts: 962 Karma: 568242 Join Date: Dec 2007 Device: Kindle Oasis 3, Kindle Paperwhite 1, iPad, iPhone	I'll give it a shot next time I am in BWI. I'll use it down to two bars and then plug it in to see if it charges. I usually end up with nothing to do at the airport except read for a couple of hours, so it should be able to charge it up pretty quickly.

06-02-2008, 03:32 PM	#22
jakeluck Groupie Posts: 193 Karma: 3252 Join Date: Dec 2004	I recharge my 505 every 10-14 days, reading about 150-300 pages/day. I keep the active reading content on the internal memory to save battery.

06-02-2008, 05:17 PM	#23
Ervserver Wizard Posts: 2,624 Karma: 1008294 Join Date: Dec 2007 Location: Iowa, USA Device: Nook Simple Touch	anyone notice if warm/cold weather has any effect on a charge?

07-05-2008, 11:30 PM	#25
flamaest Groupie Posts: 155 Karma: 1044459 Join Date: Jul 2007 Device: prs-500	I have a sony 500.. I noticed I am able to read and listen to music for about 6 hours max. After this time, my reader display battery low message and freeze the screen, but I am still able to listen to music and change tracks for about another 3 hours! Then the system conks out. So about 9 hours total. Thanks, Fabian.

07-05-2008, 11:47 PM	#26
MickeyC Grand Sorcerer Posts: 16,731 Karma: 12185114 Join Date: Nov 2007 Location: Florida Device: iPhone 6 plus, Sony T1, iPad 3	I've gotten in the habit of doing just that and it seems to work fine.

07-06-2008, 04:52 AM	#28
gwynevans Wizzard Posts: 1,402 Karma: 2000000 Join Date: Nov 2007 Location: UK Device: iPad 2, iPhone 6s, Kindle Voyage & Kindle PaperWhite	Note that the critical point being warned about is the use of USB chargers/charging stations, as opposed to a USB connection to a computer. AIUI, the Sony doesn't recharge unless it's sucessfully 'negotiated' with the charging device - again, AIUI, this is part of the USB protocol, ensuring that devices don't take more power than the chargers want to allocate them. A computer will support this but a basic 'USB power adapter' probably won't. Other devices might just ignore the failure & charge anyway, so you can't assume a charger does or doesn't support it if other devices work.