K4 battery life

Soldim · 07-06-2012, 07:06 AM

I bought a K4 (NT) last fall, and both my wife and me have been using it quite heavily. On average, it's getting used probably between one and two hours a day. Lately, I realize that battery life seems to be decreasing quite fast (wifi mostly switched off). Currently a fully charged battery hardly lasts us a week when we read a bit more than average -- when the device was new it often had one third or more left after two full weeks.

I was wondering if anyone has similar experience and has been on contact with Amazon?

HarryT · 07-06-2012, 09:01 AM

Poor battery life is often due to a book that's got stuck indexing. To check this, do a search for a non-existent string, and see if you get an "X items waiting to be indexed" type message.

Zeebra · 07-06-2012, 09:54 AM

Quote:

Originally Posted by Soldim

I bought a K4 (NT) last fall, and both my wife and me have been using it quite heavily. On average, it's getting used probably between one and two hours a day. Lately, I realize that battery life seems to be decreasing quite fast (wifi mostly switched off). Currently a fully charged battery hardly lasts us a week when we read a bit more than average -- when the device was new it often had one third or more left after two full weeks.

I was wondering if anyone has similar experience and has been on contact with Amazon?

I've had my Kindle 4 since it was released last fall and I haven't experienced poor battery life as you're suggesting. Perhaps it has to do with an indexing problem as the above post suggests. I read at least an hour a day and haven't had to charge my Kindle in 3 weeks.

RainingLemur · 07-06-2012, 12:07 PM

Indexing, most likely. Either that, or you happened to get a lemon.

Soldim · 07-06-2012, 12:44 PM

Quote:

Originally Posted by HarryT

Poor battery life is often due to a book that's got stuck indexing. To check this, do a search for a non-existent string, and see if you get an "X items waiting to be indexed" type message.

Hmm, I did the search and it didn't come up with the 'indexing' message. I did delete 200 or so books just to be sure, leaving the 8 we might want to read within the next two weeks. It's fully loaded now -- if I don't report back I will probably be all happy and have forgotten about it

Blossom · 07-06-2012, 01:48 PM

I would do a factory reset and then add the books back slowly. Keep it plugged in while it indexes. The K4 can be temperamental. It doesn't like too many books. I once sent 20 books to it through email and it froze up on me. I have about 140 books on mine that was slowly added. I get about two weeks charge but I read about 5 to 8 hours a day on it. If I read less I can get 18 days of charge.

I've had mine since release day and it still works fine. So if after a factory reset and less books it still give that amount of battery life give Kindle support a call.

sirmaru · 07-06-2012, 02:20 PM

From what I read in my NowBible manual on their Lithium battery is that all lithium batteries have a life of 500 full charges. After that they go kaput.

If you do more full charges than others, your battery will last less than others.

07-06-2012, 07:06 AM	#1
Soldim Not so important Posts: 1,064 Karma: 10181343 Join Date: Mar 2010 Location: Zurich Device: Sony PRS-505, Kindle 4, iPad, Kobo Glo 4	K4 battery life I bought a K4 (NT) last fall, and both my wife and me have been using it quite heavily. On average, it's getting used probably between one and two hours a day. Lately, I realize that battery life seems to be decreasing quite fast (wifi mostly switched off). Currently a fully charged battery hardly lasts us a week when we read a bit more than average -- when the device was new it often had one third or more left after two full weeks. I was wondering if anyone has similar experience and has been on contact with Amazon?

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07-06-2012, 09:01 AM	#2
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Poor battery life is often due to a book that's got stuck indexing. To check this, do a search for a non-existent string, and see if you get an "X items waiting to be indexed" type message.

07-06-2012, 12:07 PM	#4
RainingLemur Spork Connoisseur Posts: 2,355 Karma: 16780603 Join Date: Mar 2011 Device: Nook Color	Indexing, most likely. Either that, or you happened to get a lemon.

07-06-2012, 01:48 PM	#6
Blossom Treasure Seeker Posts: 18,708 Karma: 26026435 Join Date: Mar 2010 Device: Kobo HD Glo, Kindles, Kindle Fires, Andriod Devices	I would do a factory reset and then add the books back slowly. Keep it plugged in while it indexes. The K4 can be temperamental. It doesn't like too many books. I once sent 20 books to it through email and it froze up on me. I have about 140 books on mine that was slowly added. I get about two weeks charge but I read about 5 to 8 hours a day on it. If I read less I can get 18 days of charge. I've had mine since release day and it still works fine. So if after a factory reset and less books it still give that amount of battery life give Kindle support a call.

07-06-2012, 02:20 PM	#7
sirmaru Wizard Posts: 2,426 Karma: 6561538 Join Date: Nov 2007 Device: Kindle PW 2013, HDX 2013, Galaxy S5 2014	From what I read in my NowBible manual on their Lithium battery is that all lithium batteries have a life of 500 full charges. After that they go kaput. If you do more full charges than others, your battery will last less than others.

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