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Customer Discussions > Kindle forum

Kindle Fire 8.9" battery life

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Showing 1-16 of 16 posts in this discussion
Initial post: Sep 20, 2012 11:15:02 AM PDT
Linda A says:
What is the battery life?

In reply to an earlier post on Sep 20, 2012 11:33:56 AM PDT
Battery life stats have not been made available yet.

Posted on Oct 6, 2012 8:45:45 AM PDT
Is a battery charger included at non cost?

In reply to an earlier post on Oct 6, 2012 9:51:57 AM PDT
jsh1120 says:
Very doubtful. Manufacturers are moving to making wall chargers an optional item since so many consumers already have chargers that work perfectly. (I had six(!) that all charge the KFHD without problems.) The glut of redundant chargers simply add to the environmental cost of solid waste and recycling.

In reply to an earlier post on Oct 6, 2012 4:03:57 PM PDT
book lover says:
I just got off the phone with Amazon and the rep told me the battery life for the Kindle Fire HD 8.9 is 10 hours

In reply to an earlier post on Oct 6, 2012 4:05:00 PM PDT
book lover says:
I just spoke with a rep at Amazon and the battery life is 10 hours for the Kindle Fire HD 8.9

In reply to an earlier post on Oct 6, 2012 4:09:57 PM PDT
 nospin  says:
That is an educated opinion until Amazonputs it on the web page.

Sounds about right,though

Posted on Oct 6, 2012 5:21:55 PM PDT
jsh1120 says:
It's been speculated that Amazon has held off publishing this estimate until the FCC puts the final certification on the 8.9" model. It's more or less a formality but one that manufacturers tend to respect. And according to news on the web, that final pass was given yesterday (10/5/12).

In addition, though, I suspect that there may be issues associated with the addition of 4G/LTE option on the 8.9" model. That will inevitably reduce battery life. Furthermore, the 8.9" model is far more likely than the 7" model (with a keyboard, for example) to make use of the bluetooth feature which also drains the battery. Finally, it's also probably the case that the 8.9" model will be used more for streaming video than the 7" model. Another big battery drainer especially on a device whose screen is more than 40% (in area) larger than it's smaller sibling.

Taken together, all these factors means that providing a single battery "estimate" for the device is even more challenging than usual. (And it's challenging enough already). I assume (though I don't know) that the 8.9" model has a larger battery than the 7" model. But even if it does, the greater demands for power are going to make it difficult to come close to matching the battery longevity of the 7" model.

I suspect that Amazon may go with a 10 hour estimate (compared to the 11 hour estimate for the 7" KFHD) but it's going to be a lot like EPA estimates of gas mileage. You're going to have a difficult time matching that performance in "real life," especially if you're using 4G/LTE and bluetooth.

In reply to an earlier post on Oct 6, 2012 8:02:26 PM PDT
R. D. Clark says:
All true, but it shouldn't be that hard to come up with a common benchmark applicable across all models -- "battery life while playing internally stored video while in Airplane Mode" or something.

In reply to an earlier post on Oct 6, 2012 9:37:21 PM PDT
jsh1120 says:

No doubt you're correct but the problem is that the battery life estimate is widely used for comparisons without establishing a common set of tests and providing a half dozen different scenarios is likely to be more confusing than helpful to consumers, especially when competitors toss out a single "best case" estimate.

I usually wait for independent tests from websites that subject multiple devices to the same tests and look more at the order than the absolute numbers. For a long time Apple was more or less the king of these kinds of comparisons but in the last couple of years other manufacturers have caught up. In any event, I consider anything less than a 10% difference between devices to be meaningless.

In reply to an earlier post on Oct 6, 2012 10:36:25 PM PDT
R. D. Clark says:
I'm just suggesting that Amazon could come up with a benchmark for their own devices, as they have with the e-ink Kindles (30 minutes reading a day, wireless off). Which at least provides some sort of "this one gets 50% more than that one" comparison.

An industry-wide standard, while a nice daydream, would probably require some sort of government regulation, and let's not go there. The private sector, as you note, has it covered if you know where to look.

In reply to an earlier post on May 12, 2013 6:55:25 PM PDT
my battery life became non existent after a few months, they are replacing the unit for free.

Posted on Dec 7, 2013 5:08:33 PM PST
Last edited by the author on Dec 7, 2013 5:10:51 PM PST
Just got a Kindle HD Fire 8.9. I just turned it on and charged it. I turned it on the next night and it needed charging. I then charged it over night and 2 days later there was little to no charge. Again I did not even use it.

In reply to an earlier post on Jan 25, 2014 6:31:37 PM PST
Mine lasts about two hours after fully recharging...frustrating.

Posted on Sep 3, 2014 11:54:07 AM PDT
Last edited by the author on Sep 3, 2014 11:54:21 AM PDT
KM Ferry says:
I'm having issues with this unit as well. I purchased it in May 2014. I haven't had more than 3 hours of battery life yet. I mainly play games through Facebook, which means my wireless is running all the time, so that may be the issues. I was powering it down when I was getting the low battery notification. I've discovered that when the battery is low and I plug it in to charge, it turns the unit ON!! I wasn't aware of that until just a few weeks ago. The unit does not run on AC power, so, unless you power it down again, the battery is still being used and is not charging. Thus, when I pick it up 5 hours later, I get a battery dead screen!!! Thus, I expect I won't get more than 3 hours of game time unless I turn off the wifi while playing. So, I'm guessing the 10 hour battery life they speak of is when the unit is being used for an internal app, no wifi and low graphics. Basically, you have 10 hours of reading time. Which, I guess, is fine. I probably shouldn't be playing games for 3 hours anyway. :-}

Posted on Sep 3, 2014 12:01:49 PM PDT
"The unit does not run on AC power, so, unless you power it down again, the battery is still being used and is not charging."

No, that's not correct. Unless you have a low-powered charger it will charge while on, and in fact normally does which is why it turns on when you connect it.

Your conclusion about your battery life is essentially correct.
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Discussion in:  Kindle forum
Participants:  12
Total posts:  16
Initial post:  Sep 20, 2012
Latest post:  Sep 3, 2014

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