Hot answers tagged battery
17
Every mobile battery has an inbuilt thermistor, (which is a transducer which varies its resistance with respect to its temperature) with which the charging circuit constantly measures the battery temperature. It can even prevent charging the battery if the temperature reaches dangerous level and by controlling its temperature, the life of battery is ...
14
Try pressing the power button for > 30 seconds.
If it does not work, try to alternate power sources (PC/laptop USB port, and AC adapter) while repeating step #1.
Still no go? You may have to remove back cover and reconnect battery.
Warranty case.
(source)
13
HTC's solution to this issue is to "Press and hold the Power button for at least 10 seconds, and then release it. HTC One X will be shutdown and then boot again."
This is the only solution I would be able to see. If you require something more, then as a phone modder I would recommend you take apart the phone and manually disconnect the battery. This is ...
12
It's device dependent, if the manufacturer can fit in the circuitry to use the wall charger without the battery then yes you'd be able to do that. Most laptops can run without batteries, I doubt many smartphone does though; phones are primarily designed to be used while on the go, while laptops are more likely to be plugged in.
A safe test is to shutdown ...
12
It is not uncommon that rejected/refurbished phones find their way back to the market as "new" ones.
But in my (and at least Al Everett's) experience, batteries are almost always shipped with some charge. I wouldn't worry, as long as there are no other indicators that your device was pre-owned.
10
Connector A seems a U.FL-R-SMT-10 and probably is for an external/additional antenna.
U.FL, is a miniature coaxial RF connector for high-frequency signals
up to 6 GHz manufactured by Hirose Electric Group in Japan.1 U.FL
connectors are commonly used inside laptops and embedded systems to
connect the Wi-Fi antenna to a Mini PCI card. Female U.FL ...
10
once or twice a month a full battery drain and then a 100% charge helps increase the battery life
That is incorrect, a full discharge is never beneficial to LiON battery capacity. The battery life of a LiON battery is dependant mostly on temperature, discharge rate, and age. In fact, low charge state actually is harmful to LiON battery capacity; ...
8
As @Axeman said, the connector is a Ultra Small Surface Mount Coaxial connector (quite a mouthful and still could not get how it was abbreviated as U.FL) which is a kind of expansion port which could be used for any radio communication, including GSM, WiFi, GPS.
And as @Lie Ryan said, the fourth terminal in the battery is for connecting the antennae in ...
8
I think I already posted this in another answer -- but I don't remember where. As I think it where different details that time (more a general "what consumes most"), here some details from a reference Motorola Droid. Data taken from a German article named Energiesparplan (Heise is a very famous technology publisher in Germany; Google Translate Version here):
...
7
No app can "optimize" or "maintain" the battery in any way as it can't get the necessary access to the hardware -- probably not even if it required root. This app explicitly advertises that it does not. Anyway, the manufacturer's engineers surely have already implemented all the necessary optimizations. There is no way that the app's developers knows ...
7
For this question you might want to check with the Wikipedia article on LiIo batteries. Quoting:
Avoid deep discharge (depletion) and instead charge more often between uses. The smaller the depth of discharge, the longer the battery will last.
Avoid storing the battery in full discharged state. As the battery will self-discharge over time, its ...
6
See Wikipedia on Lithium-Ion battery technology (especially sections "cell life" and "safety").
In short:
Cell life is best at ~50% charged
Safety requires the battery to be charged to above 3V (and below 4.2V)
The best consumer experience would be to charge the battery to 100%
The LiIon battery discharges itself during shipment/storage
The battery's ...
6
No.
This App just removes the file "batterystats.bin" in the "data/system" directory. It has nothing to do with your battery life and also not the status indicator of your system.
It only keeps the Infos in the "Battery Usage" screen. It will also be resetted every time you connect to a power source.
Further Information and Sources:
XDA-Developers and ...
6
Killing all running apps didn't solve the problem, nor did disabling the automatic sync for Google account items like videos/photos (which I heard suggested for a similar battery issue).
What did work was simply rebooting the device by holding the power button and picking shut down. After rebooting Mediaserver no longer appears to use much of my battery in ...
5
Your charger is fine. Only your phone is running hot due to heavy usage.
Your phone has a few components that dissipate heat if heavily used:
The processor when used heavily by an app (yours has 2 cores)
The graphics chip when your app uses OpenGL (also for screen composition)
The display when lit (depending on the brightness)
The battery itself (when ...
5
Jelly Bean
Unfortunately, there is no setting that you can enable to show battery percentage on the system icons tray. Without using an app, all you have is:
Battery indicator on the top right corner of your screen.
Access to the battery settings, level and usage details:
Go to: Settings > Device > Battery
App
Using the Battery app by MacroPinch ...
5
A common workflow to track down deep-sleep / wake-lock issues:
Install CpuSpy
Install BetterBatteryStats
Turn off your phone
Fully charge it while turned off
Unplug the cable
Start the phone, unlock it and open some apps like email, browser, facebook, and close them again
Don't touch your phone, let it be on your table for a hour
Open CpuSpy
"Deep Sleep" ...
5
There are quite a few apps that can show the PID of running apps and services.
One which I use to find a lot of info about what's going on in my phone is the Android System Info app, you can see the PIDs of some built-in services in this screenshot:
5
You are suffering the same problem I was after upgrading. Look in the direction of either Google Now or Google Maps. Good chance you have 'Report from this device' set in Maps Location Settings. This is murder on your battery! I disabled it and am now back at about 2% - 3% per hour on 3g with light use throughout the day. I also disabled Google Now for good ...
4
Does your user manual have any prohibitions about removing the battery while plugged in? That would be my first point of information. And I probably wouldn't try it myself, but that's just me.
The issue is that you have no idea of whether the folks who designed the charge circuit accounted for this or not, and you don't know how they did the charging ...
4
If you are familiar with such things, iFixit has a teardown report for the Galaxy Nexus, it's fairly easy to disassemble it to reach the micro USB port after step 7 and inspect it.
I use isopropyl alcohol and q-tips for cleaning normally.
I'd however not suggest you try it if you have no experience with such stuff.
4
The generic perception is that networking via Wi-Fi cause less drain on your device's battery than connecting with 3G.
During the data transfer, if you use both connections to perform the same download, you will find that Wi-Fi is more efficient since it transfers stuff faster than 3G, thus leading to less consumption of your battery.
Rare exceptions may ...
4
All batteries have some self-discharge so whatever their charge was initially they will discharge when sitting on the shelf. Also most batteries effectively "die" if they undergo very deep discharge. This is why all batteries are shipped charged - either fully or partially. So when you buy a battery (or a device) the battery will always be charged to some ...
4
There is no setting available in any Android ROM that has the battery threshold setting.
From the previous answer given, it is built in.
Only course of option is to roll your own Android build, with the hard-coded value adjusted, but, and is a big but indeed, it is not the recommended route to take, as the code behind Android to handle the battery ...
4
AFAIK the temperature sensor that measures the battery is built-in (in the battery). In your case either the battery is defective, because it get's to hot immediately when charging or the sensor is defective. Either way, I think you have to replace the battery with a new one.
Before you replace the battery you should rule out a software error by doing a ...
4
One part of Google Maps is a so called "Location Service", which kicks in on a couple of intents (e.g. always when your network connectivity changes -- which happens when you login to a new WiFi network, or to a new cell tower). It caches your current location to the "location cache", which should serve to faster provide your current location when needed ...
4
No. There's no relation between those two things.
If you connect your phone via the USB it gets charged. It doesn't matter if you don't use the USB connection at all or transfer files or tether your data connection or do any other stuff while it's connected.
The charging circuit doesn't even know that it's connected via USB and that there's data flowing. ...
3
You might want to check the temperature of your phone when this happens. Touch the phone to feel whether there's any abnormal heat. Waze is a battery intensive application because it uses the GPS, radio, screen, and GPU, it is normal that the phone would warm up a little when running resource intensive apps but it should not be too hot to the touch.
You ...
3
While there is an Android port for x86-based devices -- that is, regular PCs -- I'm not sure if it is ready for normal use yet. Even if it is, you won't get that large an improvement of battery life: Android may be optimized for using little power but desktop Linux has the most important power management features, e.g. CPU scaling, as well.
But 1.2 hours of ...
3
I faced a similar problem recently on my Nexus S upgraded to stock ICS.
The problems were:
Connecting the phone to the AC charger would sometimes show the phone to be charging, while the battery level was not actually increasing and sometimes the opposite.
Connecting the phone through USB to my laptop would allow it to charge, but my laptop used to throw a ...
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