Dear all,
I have PC with Windows 8.1 Ent., 32-bit, and Saphir Media Tablet SMT-7-3G with android 4.2.2. Tab specs: Dual Core 1.6 GHz, 1GB, 16 GB internal memory, 3G.
1- Tablet turns itself off in standby mode occasionally and does not turn on. While battery was showing 70%. When I charge the battery in off mode it shows charging by turning on the yellow LED. When it is full charged yellow will turn in to green LED. But did not turn on. So I found a trick to turn it on. Press power button for 10 sec and wait. Then pressing again for 5 sec will turn it on. But I am still facing the problem.
2- When I see message 14% remaining battery, I plug the power in tab and suddenly it shows 50% and charging. DU Battery Saver app is installed now. I had Battery Doctor (Battery Saver) installed before DU Battery Saver. Both apps have the same problem.
a- Is there any problem with this behavior?
b- What actions should take to resolve it?
Kindly help to resolve both of the above issues.
Related
So, I accidentally let my phone run down to zero battery. Now it won't turn on, even when plugged in. It used to show the empty battery icon, but now shows nothing, not even that icon, or even the LED.
Anyone have any ideas, or places to point me out to.
I'm gonna leave it charging overnight.
So, leaving it charging overnight seemed to do the trick.
jhtfarquhar said:
So, leaving it charging overnight seemed to do the trick.
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Click to collapse
So, i did it from this link
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Use the electrical outlet charger (not usb pc or notebook), connect the device and hold the power button until start. (may take up to 2 minutes)
After the LED next to the front camera light up, release the Power button immediately.
The LED lights up for some time (in my case, more than 30 seconds) and may blink, then turns off and the phone will light up the loading screen with the battery indicator at 0% (zero percent), and turns off again.
Pressing the power button again, just once, without keeping it pressed, the phone will not turn on, will remain off (not rule because he can light with the target load, it depends on the charge status of the battery). But do not worry, leave loading for a few minutes without stopping and soon the phone will light up indicating more or less a 5% (five percent) of battery charging.
Now most importantly, do not connect or disconnect the phone from the charger until you complete 100% (one hundred percent) of the battery charge. This undoubtedly is the crucial and most important point of this walkthrough. I repeat: do not remove the charger or plug in your cell before reaching 100% (one hundred percent).
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All credits to pedro henrique by his walkthrough.
it happened with me too...
Just put ur phn in recovery mode...by pressing up vol+power button and then dont use wall charger...at this time it wont get charge from there.
use usb ..charge from ur laptop or pc..after 10 -15 min..boot your phn and then u can use wall charger,
Phone is Moto X 1st gen that had the original battery and was slowly dying so I bought a replacement off Amazon and swapped it out. Now it doesn't recognize any charge level to the device. I've tried a couple of those battery recalibration apps off the App Store but no luck with that (though one of them tested the battery integrity and confirmed it's not a dud). When I swapped out the old battery it was at like 18% or something so upon putting the new one in and rebooting it stuck with that 18%. I read that you could retrain it by letting it drain completely then charging full so that's what I tried next, now it reads zero.
Here's the behavior I see:
Power off device, plugged in to charger. If you push power button it will display a battery icon with a question mark in the middle
Hold down power button in this state and it still doesn't start up but the battery icon switches to the standard lightning bolt 'charging' icon but reads 0%. This number doesn't change.
Hold down power button again and it boots successfully but battery meter reads 0% - charging (actually one of the recalibrate apps I ran set it to 4% so now it says that)
How do I fix this?
Here's the issue: let's the say the phone still has some good 30% of juice in battery. I open the stock camera app and take a picture, then it shuts down immediately, displaying the message that it's reached 0% of power and it will go off in thirty seconds. When off, if I then hook it up to the power adapter, the phone immediately displays the same 30% that it originally had at the beginning, so there's no problem if I turn it back on. It happens very often. Android version is stock (7.0), and EMUI is stock as well (5.0.1). Phone is FRD-L04.
Does it shut off when you're outside?
Hello
i just calibrated the battery with "advanced battery calibrator" app. in the begning of the process it noticed that do not turn on phone unless the fully charged. i turned off the phone but it automatically turned on; i calibrated with that software again and turned it off, but it automatically turned on again. i turned it off and; after fully charged i wanted to turn on the phone: but the phone so quickly turn on & off. the LG logo just blinking. when i attach the charger it turn on and i can use the phone and it show correct percent of battery. but when i remove the charger cable, it turn off after 10 second. i upgrade its rom but still the problem exists.
can anybody help me?
rezash85 said:
Hello
i just calibrated the battery with "advanced battery calibrator" app. in the begning of the process it noticed that do not turn on phone unless the fully charged. i turned off the phone but it automatically turned on; i calibrated with that software again and turned it off, but it automatically turned on again. i turned it off and; after fully charged i wanted to turn on the phone: but the phone so quickly turn on & off. the LG logo just blinking. when i attach the charger it turn on and i can use the phone and it show correct percent of battery. but when i remove the charger cable, it turn off after 10 second. i upgrade its rom but still the problem exists.
can anybody help me?
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Click to collapse
My guess would be your battery is bad. I've had my device since launch and have gone through 4 batteries. Each time at failure the symptoms were the same. Battery drains fast, device shuts down with random amount of battery percentage remaining then bootloops and eventually only functions when a charger is plugged in. I'm guessing you were having battery issues intially and that's why you decided to use a calibrator? The calibration process may have been the last straw and your battery is shot.
I have an old CUBOT P20 "chinaphone" with Android 8.0 that I want to use as an IP camera and I need it to stay always on.
I have removed the battery and attached the usb power supply directly to the battery terminals and it works fine.
But to my surprise when I turn on the phone, the battery percentage begins to drop and when it reaches zero it shuts down like it does when the battery get low.
How could it be possible? there is NO battery, it's just my usb power supply connected at the battery terminals!
The power supply has plenty of amps (it's not a charger) and it seems that Android has a built in "countdown" that starts regardless of the battery capacity and shuts the phone off.
If I disconnect and reconnect the power supply and then turn on the phone the percentage of the "battery" starts again from 100% and then begins to drop. This is extremely annoying because I need to leave the phone always on without interruptions.
Is there a way to disable this android function?