View Full Version : Kobo Vox Battery


HugoLover
11-16-2011, 12:13 PM
Am I crazy? I have been reading on certain threads that there are people saying that the Vox Battery is really good. I bought the Vox, and returned it largely because of the battery. I have the Kobo wireless and am used to not having to charge it for a few WEEKS. I understand that the Vox is more like a tablet, but what about the people that use Kobo primarily for reading? I don't want to have to charge my ereader every night...

GJSmith
11-16-2011, 12:39 PM
From what I have read the Vox screen will use more energy then an e-ink screen, it is back lit LCD. No way around it. Evidently e-ink screens can hold the print as is without power just about indefinitely.
People pleased with the battery are probably coming from laptop reading. My Macbook gets 4 hours of heavy web surfing and about 6 hours if just reading. I have to plug it in every night before bed so would never even notice it an issue plugging in the Vox.
Did you like the screen image it presented compared to your Wireless when reading?

taming
11-16-2011, 01:17 PM
There are some things you can do to reduce battery usage if you are just going to read. Within the accounts and sync settings, uncheck Background data and Auto-sync. You can also set individual accounts there. Adjust brightness in the Display section of settings. Turn off wireless. There are probably other battery savers.

I don't routinely read on my Vox. I much prefer using my eInk device, the Kobo Touch. I was really surprised to discover this, btw.

HugoLover
11-16-2011, 01:37 PM
From what I have read the Vox screen will use more energy then an e-ink screen, it is back lit LCD. No way around it. Evidently e-ink screens can hold the print as is without power just about indefinitely.
People pleased with the battery are probably coming from laptop reading. My Macbook gets 4 hours of heavy web surfing and about 6 hours if just reading. I have to plug it in every night before bed so would never even notice it an issue plugging in the Vox.
Did you like the screen image it presented compared to your Wireless when reading?

The screen image on the Vox was another thing I didn't really like for reading purposes. I found the screen to be kind of hard on the eyes after coming from an e-ink screen, even after turning the backlight way down.

PeterT
11-16-2011, 01:43 PM
Browsing randomly yesterday I came across Battery Saver (http://www.androidcap.com/battery-saver.php)

I wonder if this might help on the Vox ?

Alans
11-16-2011, 01:50 PM
I almost never use the wireless but I still find the battery gets used up in no time. Lots
of people here have said they have at least six hours on one charge but there is no way
i'm getting that much time on mine.

LauraPony
11-16-2011, 02:26 PM
I don't think Kobo hides the fact that the Vox will be charged every day. Kobo states that the Vox will get 7 hours with the wifi off. So I was pleasantly surprised when my tablet usually does fine on between 12 - 13 between charges.

Now, I don't use it continually throughout this time. But I keep the wifi on and I pick it up every few minutes/hours to browse or read. In my opinion, this is an excellent battery life considering what Kobo had me prepared for. If I do something a little different, like watch video, the battery drains pretty quickly. I also have to make sure I don't leave the Kobo app open or it won't go to sleep and it dies, but otherwise, the battery has been treating me very well.

Most days I use my Vox throughout the day as I need it and then after reading at night but before going to sleep I power down and plug in for the night. Easy-peasy.

borisb
11-16-2011, 04:38 PM
My experience mirrors LauraPony's.

I, too, was surprised that a charge tends to last all day with casual use. Once you have everything set up, and have explored all the bells and whistles, your usage tends to drop somewhat, hence the all-day (12-13 hr) charge.

jackastor
11-16-2011, 06:32 PM
Browsing randomly yesterday I came across Battery Saver (http://www.androidcap.com/battery-saver.php)

I wonder if this might help on the Vox ?

Did you by any chance find anything that would allow printing to any printer? Just curious. Thinking that it might be a usefull thing if it can.

jackastor
11-16-2011, 06:34 PM
Browsing randomly yesterday I came across Battery Saver (http://www.androidcap.com/battery-saver.php)

I wonder if this might help on the Vox ?

I just had a peek at your link. There appear to be some other usefull apps there as well.

regards

jack

larrymohr
11-16-2011, 06:54 PM
The screen image on the Vox was another thing I didn't really like for reading purposes. I found the screen to be kind of hard on the eyes after coming from an e-ink screen, even after turning the backlight way down.

If you are using the Kobo app you can go to the font settings and it will let you set "Nightime Mode" which is white letters on a black background, then if you set the brightness down, you will likely find it easier to read. That said, I don't read on the Vox, I use my Touch for reading.

AS far as battery life.

When I take the Vox to work and leave it on all day, sleeping after 10minutes with WIFI on, I can use it here and there all day then till about 6-7pm at nite before the dredded YELLOW battery warning. If I turn WIFI off when I put it down for any length of time, it will last until 8-10pm. Heck, most people I know with iPhones have to charge them EVERY nite too, and those are much smaller displays.

Considering that an LCD display has a backlight that uses up tons of power, it is not surprising that the e-Ink lasts much longer. An e-Ink display only uses power to change the text. Therefore, while you read a page, the display is not using power. The processor still uses power, but not the display.

Larry

PeterT
11-16-2011, 08:22 PM
Did you by any chance find anything that would allow printing to any printer? Just curious. Thinking that it might be a usefull thing if it can.

Take a look at https://market.android.com/details?id=com.pauloslf.cloudprint&hl=en

Jesslynne
11-17-2011, 12:22 AM
I don't know if it's just me but I don't find the battery lacking at all. It lasts quite awhile before getting low. I've not properly timed it but I use it for so much more than reading. That said I'm quite used to plugging my blackberry in every night so it's nothing new.

Kobo wifi and its other sink bretheren don't use as much power as an LCD screen because it only uses battery power when changing pages. The vox's backlight and background programs make that impossible.

Marcy
11-18-2011, 03:46 AM
The battery on my Vox is horrid. I leave home with it in sleep mode and it is dead at the end of the day even if I never use the Vox. This is becoming a deal-breaker for me. I'm coming from a Nook, so I'm used to a backlit screen and the extra power demand. But my Nook would last all day with barely any battery depletion if I left it in sleep mode and didn't use it.

LauraPony
11-18-2011, 06:00 AM
The battery on my Vox is horrid. I leave home with it in sleep mode and it is dead at the end of the day even if I never use the Vox. This is becoming a deal-breaker for me. I'm coming from a Nook, so I'm used to a backlit screen and the extra power demand. But my Nook would last all day with barely any battery depletion if I left it in sleep mode and didn't use it.

Do you leave your Wifi on while it sleeps? Do you use some of the apps like rdio and inq? All of these continue to try to update when you're in sleep mode, especially if Wifi is on. This will drain your battery. I believe there is a way to make sure the Wifi is off while sleeping. Others will be able to tell you exactly how! :)

Suzanna
11-18-2011, 01:40 PM
Do you leave your Wifi on while it sleeps? Do you use some of the apps like rdio and inq? All of these continue to try to update when you're in sleep mode, especially if Wifi is on. This will drain your battery. I believe there is a way to make sure the Wifi is off while sleeping. Others will be able to tell you exactly how! :)
You can turn off the wifi by putting your vox into airplane mode, which is one of the options you get when you hold down the power key for a few seconds.

wilbrich
11-18-2011, 02:12 PM
I've been monitoring my "what's been using the battery" and I noticed that the big culprit is the "Kobo eReader idle". It seems that Kobo depletes your battery even in sleep mode and whenever you're doing something else on the Vox. Is there any way to turn this off?

Haesslich
11-18-2011, 08:02 PM
I've been monitoring my "what's been using the battery" and I noticed that the big culprit is the "Kobo eReader idle". It seems that Kobo depletes your battery even in sleep mode and whenever you're doing something else on the Vox. Is there any way to turn this off?

Actually, that's showing the Kobo Vox's still on - aka, 'idling'. It needs power to keep anything in RAM alive, for example. The only way to stop that is to completely power off the Kobo, which means longer start times and more power used to start up the system (by having the CPU running full-tilt and loading things into RAM) than you'd use keeping RAM alive and having the processor basically doing nothing.

I'd look more into other background processes using the CPU and trying to use the connection. While the previous day had no issues with power usage when idle, I had 70% after forcing a reset, which suggests the Kobo was doing something even while the screen was off. No way for me to figure out what was running after the reset, although I noticed the email app was running post-reset despite my not setting up any accounts for it.

larrymohr
11-19-2011, 03:01 AM
Actually, I think that when the Vox is in sleep mode, at least with this firmware, quite a few processes are still running. I have been using the "advanced wifi lock" utility set to leave WIFI on while sleeping. I noticed that the Vox receives email while sleeping if the WIFI is on. It is my suspicion that with the current firmware, sleep is mostly about having the display off and not so much about the processor being idle.

Unfortunately, with WIFI on, the battery gets pretty low by the end of the work day so lately, I have been turning WIFI OFF before putting it to sleep. The battery lasts way longer this way.


Larry

Anjohl
11-19-2011, 03:40 AM
I don't know if it's just me but I don't find the battery lacking at all. It lasts quite awhile before getting low. I've not properly timed it but I use it for so much more than reading. That said I'm quite used to plugging my blackberry in every night so it's nothing new.

Kobo wifi and its other sink bretheren don't use as much power as an LCD screen because it only uses battery power when changing pages. The vox's backlight and background programs make that impossible.


I am at 14 hours awake.. right now. My vox *is* my computer, so I use it a lot. Tuurn screen brightness to auto, and add a wifi control widget to a screen.

Michael Sherman
11-20-2011, 10:36 AM
There is a Power Control Widget you can add to your home page to switch your Wifi and Sync on/off and adjust your Brightness control. Very handy!