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Customer Discussions > Kindle forum

Better to let Battery Run Down?


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Showing 1-25 of 31 posts in this discussion
Initial post: May 6, 2011 3:20:34 PM PDT
Margaret says:
Is it better to let your Kindle battery run all the way down before recharging it? I usually recharge it about 1/2 way down. Will this shorten battery life? Thanks for any info.

Posted on May 6, 2011 3:33:21 PM PDT
Nicole H says:
Good question! I was wondering that myself!

Posted on May 6, 2011 3:35:38 PM PDT
I've been told that you should never let it die. It will shorten the battery life.

From my experience, charging it when it's at half-power doesn't affect battery life, but I may be wrong.

Posted on May 6, 2011 3:35:39 PM PDT
C. Jackson says:
No. Lithium Ion (Li-Ion) batteries do not need to be run down. NiCad, yes. I would recommend that you don't let it discharge below about 20%. Keep it charged. And, don't over charge. The charging system should protect you from that, but just don't leave it or the charger plugged in for days. There is no need.
I hoe this helps.

In reply to an earlier post on May 6, 2011 3:41:43 PM PDT
bird lover says:
Is there a way to know the exact percentage of battery life?

In reply to an earlier post on May 6, 2011 3:43:04 PM PDT
Just guesstimate with the battery meter. To my knowledge, there is no way to see the exact percentage.

Posted on May 6, 2011 3:46:09 PM PDT
Beth Sexton says:
It doesn't hurt the battery but the Kindle can get confused and require a Restart if the battery runs down completely.

Posted on May 6, 2011 4:00:09 PM PDT
Carly says:
From what I was told by Kindle Support was to re-charge when 1/2 to 3/4 out....not to let it run down at all.

Posted on May 6, 2011 4:25:51 PM PDT
Margaret says:
Thanks for all your input. I guess I am doing it right by recharging at about half way down or a little more down.

Posted on Sep 9, 2011 4:01:25 PM PDT
YAS.PR says:
Also it's not a good idea to recharge your kindle or tablet with the cover on because the battery can be damaged because of the heat.

Posted on Sep 9, 2011 4:06:02 PM PDT
Steve Thomas says:
C. Jackson had it right. The old NiCad rechargeable batteries needed to be completely discharged before recharging, or they would lose capacity. The batteries in cell phones and in the Kindle are just the opposite - they hold a greater charge and live longer, happier lives if they are kept charged up as much as possible.

In reply to an earlier post on Sep 9, 2011 4:11:38 PM PDT
Really? I've never heard that before.

In reply to an earlier post on Sep 9, 2011 5:30:24 PM PDT
Willy says:
Meter? I've got a Kindle3 and if it has a built-in battery meter I have not found it. Where is it found and how does it work please.

Posted on Sep 9, 2011 6:28:32 PM PDT
If you press the "menu" button a little battery appears in the upper right-hand corner of the screen. As you use the Kindle the battery shows the reduction in available charge.

For me, with my reading and with my WiFi turned off except to download books--far too often--I find that I can charge my battery once a week. When I got to bed on Wednesday night I plug in my Kindle. When I get up to go to the bathroom, which old guys do a lot, if the lights turned green I unplug the Kindle. There is some slight variation week to week but not much on how much I've used my Kindle.

In reply to an earlier post on Sep 9, 2011 6:43:22 PM PDT
momtaxi says:
I have a K1 and a K3. The K1, purchased in 2007, is still going strong on the original battery. I always kept its charger next to the bed and I plugged it in every night, no matter how much battery was left. My husband is now using that K1, and he has kept the same charging schedule.

Since that battery has lasted for nearly four years and shows no signs of slowing down, I've kept the same charging habits with my K3. (If it ain't broke, don't fix it.)

Since the chargers are sitting right on our nightstands, it's really convenient to plug 'em in when we go to sleep; and then we get to start each day with a fully charged K. I figure we're both covered if the power goes out for a day or two or three.

Posted on Sep 9, 2011 6:45:44 PM PDT
One of the problems for us ordinary mortals is contradictory advice. I was recently told, by a source that seems as authoritative as anything here, that iPhones/iPads benefit from being allowed to periodically go completely flat. What's a mother to do?

Posted on Sep 9, 2011 7:40:29 PM PDT
When I called CS and asked, I was informed that it is best to recharge when the Kindle screen shows the need to recharge screen. My next question was, if the battery discharges to the point the Kindle turns off, does this do any harm? The answer was, I do not know. Oh well, another idea heard (or typed). Your mileage may vary.

In reply to an earlier post on Sep 9, 2011 7:46:12 PM PDT
Willy says:
You're very helpful. Just found the battery, but it looks like a sort of grayish battery and does not indicate 1/2 full or gradation of colors. I just plugged it in to charge it completely and go from there. Again, thanks millions.

In reply to an earlier post on Sep 9, 2011 8:09:48 PM PDT
Willy says:
I heard same advice for my iPhone and iPad. But on the Kindle I gather it is a different type battery. So I just follow what they say on this forum. Kindle is a different animal altogether.

Posted on Sep 9, 2011 8:20:34 PM PDT
Bufo Calvin says:
I charge my Kindle 3 in the "middle half"...not in the first quarter, not in the last.

This is my understanding:

If you Kindle's battery gets too low, there is a safety circuit that cuts off the battery...and basically, renders it unable to be normally charged. Since the battery can't be changed by the user, your Kindle would then need to be replaced.

This gives you more information:

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

In reply to an earlier post on Sep 10, 2011 2:12:26 PM PDT
Steve Thomas says:
[Customers don't think this post adds to the discussion. Show post anyway. Show all unhelpful posts.]

In reply to an earlier post on Sep 10, 2011 3:00:08 PM PDT
King Al says:
I believe that they recommend periodically letting your battery go flat in order to calibrate the battery meter, which becomes less accurate over time. I don't believe there is any actual benefit to the device or the battery to let the battery go flat.

In reply to an earlier post on Sep 10, 2011 3:10:38 PM PDT
Denis Powell says:
King, as I understand it the meter is part of the Kindle software so if it's giving an incorrect reading a restart usually solves the problem. The Kindle won't actually let the battery go flat but will turn itself off before that happens. Older type rechargeable batteries suffered from a memory effect and periodically letting the battery go flat cleared the memory, but this doesn't apply to the LiPoly battery used in the K3.

Posted on Sep 10, 2011 4:02:10 PM PDT
" Just found the battery, but it looks like a sort of grayish battery and does not indicate 1/2 full or gradation of colors"

No, not in colors, but by variations in grey. Believe me, now that you know where it is, you will see the percentage-if you let it go down. After a charge, I can go a few days before it starts to show.

Oh, I usually charge it when it gets down between 1/2 and 1/4 left. Basically, that means about once a week.

Posted on Feb 7, 2012 5:22:21 PM PST
AH says:
I charge my battery tells me 15% left.
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Discussion in:  Kindle forum
Participants:  24
Total posts:  31
Initial post:  May 6, 2011
Latest post:  Jun 21, 2014

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