|  08-18-2011, 08:25 PM | #1 | 
| Enthusiast            Posts: 34 Karma: 129008 Join Date: Jun 2011 Location: Ottawa, ON Device: Kobo Glo, Kobo Mini, iPad Pro 9.7, iPad Air, iPad Mini Retina | 
				
				Power off vs. Sleep
			 
			
			The Kobo Touch ships with default settings of sleep after 15 minutes and to never power off. Is there any downside to not turning it off, just putting it to sleep? Are these the preferred settings?
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|  08-18-2011, 09:04 PM | #2 | 
| Zealot            Posts: 121 Karma: 42214 Join Date: Apr 2011 Location: CANADA Device: Kobo touch | 
			
			possible battery drainage when only on sleep
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|  08-18-2011, 09:54 PM | #3 | 
| Evangelist            Posts: 482 Karma: 534340 Join Date: Oct 2010 Location: Ottawa/Canada Device: Kobo Wi-Fi - Kobo Touch - GNex - N7 | 
			
			this is actually been mentioned a couple of times; when in sleep mode , the last page you are on stays in the systems ram, which requires power to maintain, and this is why it's much faster to get back into your book from a sleep state. When the device is off, ram is cleared so no power is required to maintain it. There is however, I believe, constant power drain regardless of the power state for the system clock, but this should be negligible.
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|  08-19-2011, 07:26 AM | #4 | 
| Me, Myself, but not I            Posts: 161 Karma: 228652 Join Date: Aug 2010 Device: Kobo Original, Acer 200, Asus FHD, Kobo Touch | 
			
			I've had my KT for a couple of weeks now and have only used the default settings. I don't notice a great battery drain when it sits idle and will probably leave those settings and only turn it off when I know I won't be using my Kobo Touch for  number of days.
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|  08-19-2011, 08:11 AM | #5 | 
| Addict            Posts: 399 Karma: 104628 Join Date: Oct 2010 Location: Canada Device: Kindle PW-2 | 
			
			My Kobo Wi-Fi lasts 40 days using power off and lasts 11 days using sleep mode, reading once a day for 2 hours.
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|  08-19-2011, 08:55 AM | #6 | 
| Wizard            Posts: 1,326 Karma: 1077205 Join Date: Jun 2011 Device: Kobo Touch, Sony T1, Kobo Mini | 
			
			I once had auto off after 1 hour set. Seemed I was often turning it on soon after auto off so no power saved.
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|  08-22-2011, 11:57 AM | #7 | 
| Connoisseur            Posts: 87 Karma: 19104 Join Date: Jun 2011 Location: Toronto / Ontario Device: Blackberry Playbook | 
			
			Battery savings mainly as many have said. if i only "sleep" and never power down, i'll get a weeks reading out of a charge. If i power off between uses, Easily 2-3 weeks | 
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|  08-22-2011, 10:14 PM | #8 | |
| Member  Posts: 17 Karma: 10 Join Date: Jul 2011 Device: Kobo Touch | Quote: 
 Bottom line is; don't use sleep mode. It may be convenient, but it sucks the life out of your battery. | |
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|  08-23-2011, 12:06 AM | #9 | |
| Product Manager            Posts: 487 Karma: 590887 Join Date: May 2010 Location: Toronto Device: Kobo Aura H2O | Quote: 
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|  08-23-2011, 07:14 AM | #10 | 
| Connoisseur            Posts: 86 Karma: 4890 Join Date: Jul 2011 Location: Bedford, Nova Scotia Device: iPad Mini | 
			
			I started using sleep mode two days ago, after recharging my battery. Powered off only in the evening. After approximately 6-8 hours of reading, my battery died. The monitor was showing it was approximately 3/4 full. Charged it overnight for about 11 hours. This morning, it still said it was connected and charginig. After disconnecting, it looked fully charged. I am running 1.9.9
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|  08-23-2011, 08:23 PM | #11 | |
| Member  Posts: 17 Karma: 10 Join Date: Jul 2011 Device: Kobo Touch | Quote: 
 Still, I get about a week with a single battery charge when on overnight sleep mode. | |
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|  08-23-2011, 10:55 PM | #12 | 
| Retired            Posts: 2,552 Karma: 37638420 Join Date: Nov 2010 Location: Vancouver Island Canada Device: Kobo Touch, Optimus One (2.3), Nexus 7 (4.2) | 
			
			I leave mine on sleep all day, it's a bit of pain turning on and loading the book I'm reading. Of course this might change if I got a KT because the start up speed is so much faster. But also remember that turning it one will take up a bit of power as well.
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|  08-25-2011, 11:46 AM | #13 | 
| Wizard            Posts: 1,277 Karma: 5935030 Join Date: Jun 2011 Location: Ontario, Canada Device: Kobo Aura HD | 
			
			Sleep mode on the Kobo is not nearly as power efficient as Kobo seems to think.  I can only compare to my other e-reader, the Sony PRS-650.  That one can go a month on a single battery charge with sporadic daily reading in sleep mode..  The KT, oth, needs to be powered off or it will barely go over a week.  It doesn't help that the Battery meter on the KT is so unreliable.  (At best, the unit will force shutdown when the battey is still at a quarter.)
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