[Q] Portable hotspot kills battery - T-Mobile LG G2x

OK the title probably leaves you thinking "no sh*t, Sherlock!" Hear me out... I plug the phone into the AC adapter and then plug it into a wall outlet. After that I switch on the portable hotspot.
I'm OK for hours but eventually the charge in the battery dies. Seeing as the phone has been plugged into the wall the entire time I am left wondering what foul, black magic could be responsible for this anomaly. The fact that the battery goes dead even though it's plugged into a wall outlet baffles me. Is this normal? Could it be that the battery is dying faster than it can charge?
Sent from my LG-P999 using XDA
(Rooted, using Weapon ROM)

l0lcats said:
Is this normal? Could it be that the battery is dying faster than it can charge?
Sent from my LG-P999 using XDA
(Rooted, using Weapon ROM)
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Normal? It depends on how much you're using as far as bandwidth. If you're downloading an 8Gb file over some hours, that will eat your battery even if you're plugged in.
Sent from my LG-P999 using xda premium

setcpu
Have you tried setcpu profiles to underclock when screen is off? Im able to get a couple hours of tethering unplugged.

Normal, unless the AC adapter isn't supplying enough Amps/Volts. I know using a Samsung adaptor from my Vibrant doesn't supply enough, and discharges if I use it while plugged in.
Sent from my amazing G2x running EaglesBlood and Faux.

You're not getting enough amps into your phone. Get at least a 1 amp charger.
Sent from my LG-P999 using XDA

If your devices / ROM supports it Bluetooth Tethering uses less power then Wifi, but is is a little slower.

Related

Battery draining instead of charging.

I have it plugged in via usb in my car and instead of charging it is draining? It was charging fine in the car on wednesday. After 30 minutes of me not using it and plugged in it has lost 10%..
Sent from my SCH-I500 using XDA Premium App
Sounds like the usb plug may not be putting out enough juice to charge. Does it charge fine when on the home charger or PCs USB port?
Tap-a-Talked from my Mesmerize
Heinz 57? Turn off the phone and charge it with it off for 15-30. I have that problem too with Heinz and the newer versions
Sent from my SCH-I500 using XDA App

Battery goes dead while plugged in.

I recently bought a hdmi cord and downloaded netflix to my phone. While the phone is plugged into wall my phone goes dead while watching netflix with hdmi being used. does the hdmi take more power then phone takes in or what. Someone please help out because this sucks. Im running 1.5 gummy gb.
piperat said:
I recently bought a hdmi cord and downloaded netflix to my phone. While the phone is plugged into wall my phone goes dead while watching netflix with hdmi being used. does the hdmi take more power then phone takes in or what. Someone please help out because this sucks. Im running 1.5 gummy gb.
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Yes you are correct. It also drains more than charging when you use the Mobile Hotspot.
Were you on 4G or WiFi?
I had the same problem in my car streaming bluetooth audio. I got a better charger and it wasn't as bad.
Well that sucks. I wish sammy would have thought that out. Thanks for the help.
Sent from my gummy gb with a cool midnight blue
Does the new GB leak charge at a higher mah?
Sent from my SCH-I510 using XDA App
No it doesnt i tried it on gb leak when i noticed the issue. Now im on froyo and will try again
Sent from my SCH-I510 using XDA App
It's all about the charger. Ever notice how the low battery warning says to stop using it or it will charge inefficiently? A normal computer USB port puts out 500 milliamps, a Droid X charger puts out 850, and the Charge charger does 1 amp. Basically, the higher the charger amperage, the faster the charge. The Charge charger might not be able to meet the demands of the device while it's under heavy use, which is why I use my Galaxy Tab charger (2A). It works perfectly.
EDIT: tl;dr the ROM does not matter for charging, it's all about the hardware. Use a higher amp charger.
Sent from my Droid Charge running Humble 1.4
Thanks for advice. That is a simple solution
Sent from my SCH-I510 using XDA App
I feel like there's something weird going on with me. Using mobile hotspot seems to drain less energy than charging for me with the stock charger, except there's an issue if I let it charge up to 100% while using mobile hotspot. If I let this happen, it seems to stop charging and tricks the battery into thinking that it's still at 100% when it's in fact draining. If I unplug it after some time (when it still think it's at 100%) I'll see the actual battery life percentage as if it stopped charging when it reached 100%.
My temporary solution to this is to unplug when I get to 100% and plug it back in when my battery is low and it'll eventually reach 100% again then repeat (all while mobile hotspot is active). Of course this is not an ideal solution... I sometimes wonder if it has anything to do with the full battery notification/popup because ever since I switched to the Gingerbread leak I haven't been able to disable that. I think if I use a ROM with it already disabled, I can leave my phone plugged in and mobile hotspot won't ever drain to empty. Not sure if I have tested this thoroughly enough though.
I use a 1A charger, but the phone only charges around 250mAh. The phone purposely charges at a lower rate. This has been discussed many times. The software is a deciding factor too.
Sent from my SCH-I510 using XDA App
H3Dude said:
I use a 1A charger, but the phone only charges around 250mAh. The phone purposely charges at a lower rate. This has been discussed many times. The software is a deciding factor too.
Sent from my SCH-I510 using XDA App
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Same thing happens to me. I have 1A and higher chargers, but because the phone doesn't recognize it, it refuses to charge at the higher rate.
quarky42 said:
Same thing happens to me. I have 1A and higher chargers, but because the phone doesn't recognize it, it refuses to charge at the higher rate.
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It is a software limitation. I had the original incredible for a while, one of the big deals with it was charging it in the car while using GPS.
One update they turned on slow charging, but then devices were dieing as they were being charged, so they pushed another update out to reverse it so they would receive a faster charge.
So you are limited by the hardware and what it can handle, as well as the software and how its programmed to handle it...
If its software maybe the devs can adjust this in their roms
Sent from my SCH-I510 using XDA App
piperat said:
If its software maybe the devs can adjust this in their roms
Sent from my SCH-I510 using XDA App
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Id imagine its kernel related?
Sent from my SCH-I510 using XDA Premium App
quarky42 said:
Same thing happens to me. I have 1A and higher chargers, but because the phone doesn't recognize it, it refuses to charge at the higher rate.
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Odd...my Gtab charger works fine (don't know the input amperage, but it's rated at 2A). Maybe my ROM/kernel, or just a Samsung thing?
Sent from my Droid Charge running Humble 1.4
I usually use the charger from my old fascinate and my phone charges normally
Sent from my SCH-I510 using XDA App

Charging while using gps :(

Before I got this charge I ran nothing but HTC phones on tmobile. while being plugged into car charger and using gps the battery level goes down fast. It doesn't maintain the charge or add to it while navigating. Is this a samsung thing? Any remedies?
Sent from my SCH-I510 using xda premium
That cannot be right. Make sure your car charger, when it charges your phone, is pulling AC instead of USB.
GPS uses very little juice. Just get the 950ma Motorola charger from Amazon for 5 bucks. Something is messed up if your phone doesn't charge
Sent from my SCH-I510 using XDA App
xdadevnube said:
GPS uses very little juice. Just get the 950ma Motorola charger from Amazon for 5 bucks. Something is messed up if your phone doesn't charge
Sent from my SCH-I510 using XDA App
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I think you both are onto something. I'm gonna pick up new car charger, than see what happens..
Sent from my SCH-I510 using xda premium
Mine doesn't discharge, but it doesn't charge hardly at all. I'm using the Verizon dual port charger (the one that has a USB port on it as well as the standard charging end)
Sent from my SCH-I510 using XDA App
I use a Monoprice 2A USB charger with an OEM USB cable. Charges extremely slowly or just stays level, but never drains.
Sent from my GT-P1000 using xda premium
kvswim said:
I use a Monoprice 2A USB charger with an OEM USB cable. Charges extremely slowly or just stays level, but never drains.
Sent from my GT-P1000 using xda premium
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With GPS on, you barely Charge with that charger? I know its limited by the kernel at 800mA or so, but damn, that should charge you up fine.
I rock GPS in the car all the time and I still Charge pretty quickly...
xdadevnube said:
With GPS on, you barely Charge with that charger? I know its limited by the kernel at 800mA or so, but damn, that should charge you up fine.
I rock GPS in the car all the time and I still Charge pretty quickly...
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All depends on what you're running at that time-4G, cell and GPS reception, etc.
Sent from my GT-P1000 using xda premium
Make sure you are using a high amp charger. I like the one from Motorola.
Even so, with 4g and the screen on - the phone charges slowly. Turn the screen off and it charges much quicker.
Sent from my SCH-I510 using Tapatalk

question about over heating and charging...

Should this phone be able to handle playing music from a downloaded spotify play list and run navigation at the same time through blue tooth without over heating or draining? I had the phone in a windshield dock the air conditioning was running. I noticed the phone was hot to the touch and despite being plugged in to a charger the battery was draining. I'm on the latest clean rom not overclocked.
After taking it down out of the windshield and keeping it right by the AC vent it cooled down but the battery still drained.
ETA: more details and clarified the question
I use panodora and navigation and haven't had an issue. If it's really hot out I aim one of the AC vets at it and that keeps it nice and cool. One of my docks is right below a vent so it works out perfectly.
Sent from my HTC One X using xda premium
If temp inside the car is comfortable to humans the phone should not get that hot though right?
gunnyman said:
If temp inside the car is comfortable to humans the phone should not get that hot though right?
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It gets warm for sure but not hot to the point of overheating. If it's in the sun though that could make it get too hot.
Sent from my HTC One X using xda premium
Probably a dumb question but what's the voltage output on the dock? I had the same problem with my original Evo back in the day using a generic 600mA charging cable. Switched to a higher output and it stopped, although it's still charged SUPER slow while using navigation and music...
Never shut down or anything but maaan that puppy got hot.
Standard usb cable. Not a powered dock.
gunnyman said:
Standard usb cable. Not a powered dock.
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Ah okay gotcha. Does it plug into a usb port straight through the car then or is it a cigarette lighter? I know this is irrelevant to the heat issue, but that losing battery while plugged in drove me nuts. Turned out the usb cable/plug I had wasn't pulling enough power from the cigarette/accessory outlet in the car to keep a positive charge going under load.
The phone showed it was being charged through "usb" instead of "a/c"
It's a cig lighter usb adapter. Never had a problem like this with any other device but I've never had a phone with this large a screen either.
Does it say it's charging through a/c under Settings->Power? Or usb? I know usb charges much slower. Most wall or car chargers list the output on the plug somewhere.
From what I've seen, anything around one amp should trigger a/c charging mode. Never had a problem with charging no matter what I run then.
I didn't look but the orange light was on and I saw the charging animation. I'll look at it next time I plug it in.
Hope that's at least helpful for the not charging thing anyways. Sorry for the semi-OT.
Anyways, I know mine gets warm when charging and when using navigation and gps. Combine the two and it gets scary. This has happened with my Evo, Evo 3d, and HOX. Dunno.
It worried me enough to post about it.
I just looked at the charger and is says 1000 milliamps max.
So your question is whether the phone will get hot while charging the battery and using navigation? Uh... Yeah, it will do that.
Sent from my HTC One X using xda premium
ECEXCURSION said:
So your question is whether the phone will get hot while charging the battery and using navigation? Uh... Yeah, it will do that.
Sent from my HTC One X using xda premium
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No my question was will running navigation and streaming at the same time cause it to overheat. One of the first things the phone do when it over heats is stop charging.
I had the same heating issue so I changed the charger - now, I use one that outputs 0.7 instead of 1.0. The default charger outputs 1.0.
Sent from my HTC One X using xda app-developers app
On my way home from Atlanta I stopped by an AT&T store and explained my problem. I purchased a 30 dollar usb car charger from them. On the way home I made sure it said charging on ac. I used Google navigation and spotify playing cached content and lost 20% in 2 hours. If this phone can't keep up with running 2 things at once I'm going to have to get something else.
would you believe a factory reset fixed it?
WEIRD
On my drive back today I resorted to turning off the screen when GPS was running. It was charging, but very slowly.
So a factory reset improved it for you? I might try that.
Sent from my HTC One X using xda premium
gunnyman said:
would you believe a factory reset fixed it?
WEIRD
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Very strange man. So none of the heat issues anymore or anything? Glad you got it sorted out.

Better charge with wall outlet than USB

When I charge my phone via wall charger, it charges much faster and I get better battery life. When I charge it via USB, the battery drains much faster over the day. Is that normal?
Sent from my SAMSUNG-SGH-I727 using xda premium
Not sure in this. I know that charging via wall is faster as it has direct power current and it closes the data line. Maybe you were having wake lock issues and it wasnt going to deep sleep properly? I charge a lot via USB since I'm on my PC a lot but had no large battery drain. On a regular idle I get about 1%/hr and that's with no underclocking.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
If you charge it through usb try restarting after its full and after you unplugged it and let us know if it still drains faster.
And for reference: http://forum.xda-developers.com/showthread.php?t=1759541

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