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Hi
Mine does about 1 day if I am lucky, WiFi use fries it. This is about what I expected.
The 'time left' meter on the today screen starts at about 4.5 hrs and seems pretty accurate.
If I switch off the auto-off and leave it running with wifi on then it gives me a low batt warning (@ 20%) after about 5 hours. (wifi on, Beams off, backlight off after 30 secs, bluetooth off).
Nigel
Extended Battery??
Standard battery is 1450mAH. Does anyone know if an extended battery exists?
Nigel
U may want to buy this if u want a really "power" spare battery.. but cost quite high...
http://www.proporta.com/F02/PPF02P05.php?t_id=952&t_mode=des
Hi,
The battery life depends on how the device is used. In my case, with phone signal strength at full bar and without incoming or outgoing calls and not usage and stationary, the battery will last 48hours on a full charge. With Wifi on the drain on battery is fast, I am getting about the same figure as you have indicated. I also notice that the phone radio draw more power if you are on the move and in some instances I have notice that it draw twice the amount verses staying stationary scenario. The comparison is based on no incoming or outgoing calls.
Hi
Yes, the radio will draw more power if you are on the move. When stationary, the device will tell a base station (BS) that its there, and then there will be no further comms until say 4 hrs time (the time depends on network config), when the BS says 'hey, device X, you still with me?'.
When you are moving, things are very different, the device (MS) will be handed over from BS to BS as you travel. Sometimes there will be 3 base stations serving a given area, the MS will communicate, and return QOS info to the network to decide which base station it should use. This can happen pretty often. A Hand-over occurs when the signal from a new station exceeds the signal from the old station. There is some hysteresis applied to the handover to ensure that it does not swap between 2 or more BS that offer almost identical signal strengths but regular flipping from BS to BS can still occur. There is much more to it than that of course...
Sorry, used to work at Rohde&Schwarz, developing this: http://www.rohde-schwarz.com/C1256AAF004806F9/0/C53C93BFD3B81600C1256AB5004B3210
Regards
Nigel
Hey, that was really informative - thanks!
RaNmA_ said:
U may want to buy this if u want a really "power" spare battery.. but cost quite high...
http://www.proporta.com/F02/PPF02P05.php?t_id=952&t_mode=des
Click to expand...
Click to collapse
Hi
This is listed an an XDA II battery, not a IIs batt. Dont know if there is a difference, I have emailed them to ask if it fits the IIs.
Thanks
Nigel
well my battery lasts for 2 hours full use... and 24 hours standby on flight mode with no bluetooth...
I have the XDA backpack. With this I experience 3 days standby and about 1.5 days on regular (about 30-45 minutes of call, and about 100 SMS messages sent and received combined) use.
Poch
I purchased the icontia tab a100 yesterday and after playing with it for a day, I've come up with some observations and impressions. My purpose in buying the A100 was primarily for ebook reading, but I also wanted as much of a "full fledged" tablet as possible within a reasonable size to use with google's navigation and skymaps, a few games, etc. (I've previously owned a samsung galaxy tab 10.1 and ipad2.)
Size and form-factor: This was, as expected, nearly perfect for one-handed ebook reading. The smaller size makes it extremely easy to balance in a single hand while still scrolling/paging through the book with my thumb. There's a good reason why B&N and Amazon both chose this form-factor for their color ebook readers.
Screen: From reading this and other forums, I was expecting the screen to be much worse than it really is. When held in the portrait orientation, the screen is acceptable (for me) from most reasonable viewing angles. In landscape, there is a dramatic amount of color shift from any angle other than directly head-on. As this tablet is so easy to hold single-handed, I don't expect this to be a problem.
Bluetooth: I'm not sure why Acer bothered with this when they seemed to go out of their way to cripple it. This is the first BT enabled tablet I've ever used where I couldn't use BT to tether to my mobile phone. (Apparently, Acer only supports using BT to connect a stereo headset.) This means that I'll have to use power hungry wifi instead of lower power BT to tether - which will impact both my phone's battery life as well as the A100's battery.
Speaking of battery: The battery life on this tablet is poor. From a fully charged state, with wifi turned on and connected to a AP less than 10 feet away, all syncing turned off, the screen set to "auto" brightness in a normally lit room, and nothing but my ebook reader running (moon+), I was only able to use the tablet for 5 hours before the battery was drained. That's just pathetic. In contrast, my 10.1 galaxy tab and ipad2 can both go for over 8 hours. (Both of those tablets were also connected to and syncing with an exchange email account.)
Overall: The battery life on this thing is going to be a deal breaker for me. I don't mind recharging the battery nightly, but if it doesn't have enough juice to last for a full work-day, it won't be very useful. Any suggestions on how to get 8 hours of life from the battery?
Thanks
Gary
The ICS update should fix the teathering issue. I haven't read the full list of changes, but I think that is going to be in there; maybe someone else can confirm/correct.
Turn GPS off. Random apps will access your GPS and it helps to have it turned off.
I use my tablet more on the weekend than during the work week and by the time I go to bed, I am at about 10% battery. I have the WiFi turned on most of the time, but if I am doing yard work, or if I am leaving and I know I won't be near WiFi, I turn it off.
Most people will tell you to turn off WiFi when not using it, but I like getting notified that I have an email. You can also change the WiFi settings to automatically turn off when it goes into suspend.
For work, I got a second charger that I keep at my desk. I use the device for meetings, watching videos during lunch, and listing to music. If I am in a lot of meetings, it will drain faster than if I'm not, so I will use the charger if needed. I use the charger maybe once a week.
When playing games or reading an ebook, turn off WiFi. There is really no need to have it on unless you like getting interrupted with email notifications.
Don't use live wallpapers. Keep widgets down to a minimum. Those both drain the battery a lot too.
At the end of the day, use the Settings > Applications > Battery Usage and it will show you what is killing your battery.
Testing the battery more...
I powered off (and back on) the tablet to clear anything from running other than whatever Google and Acer have set to run as default. Wifi is turned on and connected to an AP that's about 6 feet from me now. The wifi disconnect policy is set to "Never when plugged in" (which doesn't say much about what its doing when it isn't plugged in.) For screen brightness, I turned it down to the lowest setting (turning off 'auto'.) The tablet is now syncing only with an exchange server (on the same LAN as the wifi) using push notifications.
The only widgets I have running is the digital clock. The wallpaper is the factory image (not live.)
I then unplugged the tablet from AC power (it was charging overnight) and immediately opened my ebook reader. As of this message, I've been reading an ebook for 2 hours and 37 minutes, and only 2 email messages have come in. My battery is at 43%. This suggests I only have about 2 hours and 15 minutes of battery left.
According to "about tablet->battery use", 84% is going to the screen, 9% to wifi, 5% to "moon+ reader", and 2% to android OS.
(I have moon+ reader configured to respect the OS screen brightness and not override it.)
If I'm getting <5 hrs just reading an ebook, I have to wonder how much time I'd get watching a movie or playing a game. Not much, I'm guessing...
I realize that the battery in this tablet isn't all that great, but my numbers are worse than what other people seem to be getting. Perhaps this is a defective unit?
(It wouldn't suprise me. I've had horrible luck with android tablets. An asus transformer that shocked me, a galaxy tab 10.1 that would lock up constantly, another that wouldn't even turn on, etc.)
There is a way to tether also. Here are the terminal commands. replace the XX:XX:XX:XX:XX:XX with the mac address of your phone's bluetooth adapter.
pand --connect XX:XX:XX:XX:XX:XX
sleep 3
dhcpcd bnep0
setprop net.dns1 8.8.8.8
The only issue with this method not all apps see the bluetooth network as a valid network connection.
Sadly, I think this thing is going back to the store. It's a nice tablet, and I could overlook the BT issue if it weren't for the wimpy battery life. Perhaps I'll pre-order one of the new samsung 7" tablets coming out.
Take care
Gary
Yeah, the screen is a killer. When I read books, I normally have the brightness turned all the way down (when inside) because I don't like it bright when reading.
Also, are you using a White on Black or a Black on White screen setting for your book? Using black on white will drain the battery a lot more than the other way. I also prefer the white text on black because it is not as bright and doesn't strain the eyes as much.
One day we will have an awesome screen that can switch from LCD to eink . . . one day.
how to u get the black with white and I use my tab all day with all things running n get 6_7 hours I read do games watch movie,,,,,
---------- Post added at 07:59 PM ---------- Previous post was at 07:41 PM ----------
never mind got it but txs
The screen is the real weakness on this tablet.
Hi all. Hopefully you can help me.
I've had my HOX for about a year. Recently I bought an iBolt car dock and a car charger. The car charger provides both 1 amp and 2 amp outputs.
A couple of days ago, I had the phone in the dock with maps open using GPS and Bluetooth connected. A notification came up that there was not enough current for the phone to charge. I dismissed the message. After about 2 or 3 hours the phone switched off due to low battery.
I always leave WiFi on.
What current should the phone need to charge with everything on? I don't think you should have to turn anything off when plugged in.
Also, the current draw notification has not reappeared since. I think the option to not show it again was checked. How do I get this back?
InteraX said:
Hi all. Hopefully you can help me.
I've had my HOX for about a year. Recently I bought an iBolt car dock and a car charger. The car charger provides both 1 amp and 2 amp outputs.
A couple of days ago, I had the phone in the dock with maps open using GPS and Bluetooth connected. A notification came up that there was not enough current for the phone to charge. I dismissed the message. After about 2 or 3 hours the phone switched off due to low battery.
I always leave WiFi on.
What current should the phone need to charge with everything on? I don't think you should have to turn anything off when plugged in.
Also, the current draw notification has not reappeared since. I think the option to not show it again was checked. How do I get this back?
Click to expand...
Click to collapse
Firstly, regardless of the charger output, the charging circuit in the HOX will accept a maximum of 1Ah. Under intensive use I have recorded power usage as high as 1.6Ah, give or take a bit. This is screen on and running apps like Maps. Obviously with a 1.8Ah battery capacity this can potentially drain all charge in a tad over one hour.
Also obviously, a 1.6Ah draw exceeds the 1Ah the charging circuit will accept. This will slow down the discharge rate but is not enough to power the phone AND charge.
Basically, the charging ability of the HOX is NOT enough to compensate for it's power draw with so much running simultaneously...Screen, Wi-Fi, GPS, BT, Maps being a CPU and bandwidth hog probably had all 4 CPU cores powered as well as constant radio data usage.
Thanks for that. Sound like poor design. =-O
Do you know how to get the alert to display again. It's useful to know when this situation arises. At least with the prompt I can start disabling things.
The new thing the other day was Bluetooth. Maybe I should try turning off WiFi.
How did you get the power draw figures?
Sent from my HTC One X using Tapatalk 4 Beta
InteraX said:
Thanks for that. Sound like poor design. =-O
Do you know how to get the alert to display again. It's useful to know when this situation arises. At least with the prompt I can start disabling things.
The new thing the other day was Bluetooth. Maybe I should try turning off WiFi.
How did you get the power draw figures?
Sent from my HTC One X using Tapatalk 4 Beta
Click to expand...
Click to collapse
I use Battery Monitor Widget to track usage, temp and time remaining.
As for the notification...sorry I don't know.
You can get around it by disabling 2 cores if you are rooted.
Sent from my HTC One X using xda app-developers app
Just want to know your thoughts about having wifi or Bluetooth enabled all the time, even with no connection or pairing with nothing, regarding battery life
I ask this because my test would not be accurate as I always use the phone differently (moving to different places, calling, music) apart from playing with kernel and other settings... So can't really tell the difference in that
Please don't tell me, just turn them off when leaving home or leaving your car. My point is to get it connected/paired with no need to unlock phone, turn on... etc... xD
About NFC I saw a module to enable it when screen off. But I read comments that it causes big drain, obviously
On the previous build MH19C I was pretty sure if wifi 5GHz is enabled and available, it will drain and also wake like crazy. This happens in my office but not at home where I don't have a 5GHz wifi or even wifi ac, but is widely used in office, with multiple physical AP's. Now already on the May update, I no longer enable 5Ghz wifi and backgroud scanning just to be safe.
Less than other devices due to the Android Sensor Hub and Doze.
while not in wifi i have data which drains tons of battery anyway, so i dont even bother with any miniscule effect wifi scanning might have. i would advise you to put it off your head too, there are thousands of tiny unessecary battery drainers in your phone, it would sap your mental health trying to deal with anything more than the big ones (data/screen/bugged apps) for only few % of battery.
if the phone is able to last till bedtime or return to home, then it does not matter to meddle with anything. charge it every night and if comes to worse it charges to 50% in few minutes
Thanks for responses
Giorgos Chatziioannou said:
while not in wifi i have data which drains tons of battery anyway, so i dont even bother with any miniscule effect wifi scanning might have. i would advise you to put it off your head too, there are thousands of tiny unessecary battery drainers in your phone, it would sap your mental health trying to deal with anything more than the big ones (data/screen/bugged apps) for only few % of battery.
if the phone is able to last till bedtime or return to home, then it does not matter to meddle with anything. charge it every night and if comes to worse it charges to 50% in few minutes
Click to expand...
Click to collapse
Exactly, that's why I want to know if the % is noticeable or not
It's a good advice. However it's also good to keep things in order because battery cicles are limited in phones and my goal is to keep the 5x more than 2 years xD
So I wouldn't be fine just getting at the end of the day, it's good to preserve and not drain unnecessary drain, considering this battery is not removable, plus it is already 'bad' being new haha
Sent from my Nexus 5X using Tapatalk
Javi22 said:
Thanks for responses
Exactly, that's why I want to know if the % is noticeable or not
It's a good advice. However it's also good to keep things in order because battery cicles are limited in phones and my goal is to keep the 5x more than 2 years xD
So I wouldn't be fine just getting at the end of the day, it's good to preserve and not drain unnecessary drain, considering this battery is not removable, plus it is already 'bad' being new haha
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
i dont know about battery cyrcles, but replacing battery on 5x is not hard - watch a video about it as to not make any hasty mistake, and its piece of cake.
also its better if the battery is not too low when recharged and not too hot. 5x already has a annoyingly protective temp threshold so you dont need to worry about ruining your battery that way, while its better to recharge every night (or more often if you need) even if there is plenty of juice in the phone cause that is healthier for the battery.
If reducing battery cycles is your main goal, you have to turn them off.
I'm keeping wlan (connected at least 50% of the time with decent-v good connection)/bt (most of the time no connection, only in car and for bt speakers) switched on all day and they together take 7-8% battery on (my) average use (~10-15% left before charging every night), of course much less (in relation) when heavily using the phone.
emp504 said:
If reducing battery cycles is your main goal, you have to turn them off.
I'm keeping wlan (connected at least 50% of the time with decent-v good connection)/bt (most of the time no connection, only in car and for bt speakers) switched on all day and they together take 7-8% battery on (my) average use (~10-15% left before charging every night), of course much less (in relation) when heavily using the phone.
Click to expand...
Click to collapse
Thanks
That's what I wanted, some numbers about your experience
Fine then. Once I get some rom and kernel stable I will check for myself. For now it will be disabled when not using (tasker helps too)
After upgrading to Nougat, I found that my Nexus 5X's battery drained much faster than before.
I did some testing and discovered that Bluetooth was responsible:
- with BT enabled, the 5X loses about 5% battery per hour, simply sitting there on the table (WiFi and Mobile enabled as well)
- with BT disabled, it's <2% per hour (WiFi and Mobile enabled)
I only use BT in my car, so usually BT should just be idle.
Any ideas would be much appreciated!
Battery is lame on 5x mines particularly worse at work due to the pore antenna always loosing data connection and searching for it seems to drain it quicker just changed from the Moto G4 and antenna in that is much better didn't loose data connection as much
Sent from my Nexus 5X using Tapatalk
For me 7.0 is totally broken regarding battery, see my thread:
http://forum.xda-developers.com/nexus-5x/help/battery-drain-fresh-reinstall-7-0-idle-t3451094
I downgraded to 6.0.1 (MTC20F) and everything returned back to normal ( about 5% drain per night).
Maybe radio model on 7.0 is broken, coz it drains power just when it is idle while doing absolutely nothing (no uplink or downlink data sent). I guess always turning ON/OFF wifi and BT might help, but for me it is easier to downgrade.
Not had it that bad on 7.0 but it's no better I think haven't noticed drain while idle but deff needs more tweaking yet hell I just went from the G4 back to 5X OK it has a 3000mAh battery but I could get near day and a half fairly heavy usage , 5X I'm charging mid day to make it through rest of the day and still need to charge around 10pm if up late why did I do it !! For 7.0 of course ,, piff waste wish I'd kept G4 now and it did turbo charge QC 3.0, N5x better chip can only do QC 2.0
Sent from my Nexus 5X using Tapatalk
Is this being observed more widely yet?
I've just upgraded to 7.0 (stock rooted) and noticed today that the battery was getting a bit of a thrashing - and bluetooth is the highest draw, which I have never seen before. I've always left it on permanently as it links to my car system and never had a significant battery penalty before.
In an attempt to resolve, I've just turned off battery optimisation for Bluetooth sharing (have heard that could be a problem) plus also bluetooth scanning in location accuracy. I really do not want to have to turn bluetooth on and off, it would be a backwards step.
Gas buddy and other poorly coded apps use Bluetooth to acquire your location. Google it. Uninstall them and enjoy normal battery life again.
Sent from my XT1650 using Tapatalk
I don't have Gasbuddy specifically, but I do get your point. I've had no issues for the past couple of days since turning off bluetooth battery optimisation and the bluetooth location scanning. I'm interested to know which one is at fault - I'd guess at the location scanning based on your information - so I'll have to turn them on individually to make sure.
If it does turns out to be location, is there an easy way to track it back to a specific app?