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I was watching the Mavericks vs Thunder game using the watch ESPN app and my nexus battery was at about 93%
I watch since halftime to the end of the game and I was plugged in to a car charger the whole time and when the game ended about 1 1/2 hrs later the battery had dropped to 53%. Can't understand it. Hope someone here can explain this to me.
Phone is galaxy nexus, obviously, the battery is the 2100 OEM battery from Verizon store, charger is a belkin dual outlet 1amp micro car charger with the cable that came with a Droid charge.
Thanks in advance ladies and gentlemen, I did look and search, didn't fins anything covering this specific issue.
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i am 99% sure its the car charger. but cant give u a reason
rfvreynoso said:
Phone is galaxy nexus, obviously, the battery is the 2100 OEM battery from Verizon store, charger is a belkin dual outlet 1amp micro car charger with the cable that came with a Droid charge.
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5V right? that's not a huge draw at all on your battery, i'm assuming your car was either running or started right up afterwards...you can be certain your phone was getting that full 1A especially if your car was running. if your phone showed charging and your phone will normally charge from your car like that then you shouldve been in good shape. despite what you may think, i actually am trying to present relevant info lol but ummm other than that? i would definitely try a multimeter (.....if you have one.....) cuz that would show you exactly what you're getting in/out. usb pinouts should be somewhere on the internet. other than that, try doing the same thing (except for maybe a shorter time period if preferred) on a wall charger which should be more reliable and compare results. i've had devices that burn power faster than they receive them....but the good ole gnex? im not so sure. (engineer here).
I just recently join big red and coming from sprint with an evo 4g and didnt have this issue with that phone and same charger. I'm definitely going to try it with home charger to see if its the charger.
Extra info, the vehicle was powered on before I plugged in the charger, in case it matters any.
Thanks to all the reply thus far.
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I find that under heavy usage, only the plug in wall charger gives enough juice to keep it increasing... and even that can go flat or decrease if you are really pushing it... also the way the battery stats are displayed can be flaky too... jumps in the level of charge and quick drops... hard to tell how accurate the reading is.
I hear you. That's crazy, basically the phone draws more power that the charger can provide. I would think the charger should be fine since its 1 amp just like the home charger.
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Check in settings - status if it says charging (ac) or charging (usb) when plugged in you car.
If it says charging (usb) the charge amps are limited to 500mA.
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The phone can use more power than a car charger can supply. This is commonly posted all over. Check your car charger, its likely a 0.5 amp. Buy a 1 amp or higher.
rfvreynoso said:
Phone is galaxy nexus, obviously, the battery is the 2100 OEM battery from Verizon store, charger is a belkin dual outlet 1amp micro car charger with the cable that came with a Droid charge.
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Your problem is the charger, 1 amp is the sum of the two outlets, hence you're only giving your phone 500mA max. When charging at that low of a rate, you'll drain the battery when doing anything power intensive on the phone. Your only remedies for this is to get a car charger that's capable of putting out 1 amp or more on a single line. What I personally did was get the Griffin Powerjolt dual charger for $8 on Amazon, opened it up, and soldered the center data pins on each port together.
najaboy said:
Your problem is the charger, 1 amp is the sum of the two outlets, hence you're only giving your phone 500mA max. When charging at that low of a rate, you'll drain the battery when doing anything power intensive on the phone. Your only remedies for this is to get a car charger that's capable of putting out 1 amp or more on a single line. What I personally did was get the Griffin Powerjolt dual charger for $8 on Amazon, opened it up, and soldered the center data pins on each port together.
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I though that the griffin powerjolt dual outlet charger would dish out 1amp on a single port if the 2nd port was not being used. Interesting, I can see your point. Would you happen to have a picture of, or remember which are the two that need to be bridge inside to make it a full 1amp output?
Thanks in advance.
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Herman76 said:
Check in settings - status if it says charging (ac) or charging (usb) when plugged in you car.
If it says charging (usb) the charge amps are limited to 500mA.
Sent from my Galaxy Nexus using Tapatalk
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Okay, I tried what you said and I got weird results. I used the awkward griffin powerjolt dual outlet car charger. I tried using two different cables, one was from my girl's Droid charge and when I plugged it in and check the status it said usb charging, then I plugged in a cable that came with a i go green adapter that I had purchased at an airport and the phone said ac charging. Unless the cable that came with the Droid charge can only pass 500mamp, I'm puzzle.
Both were plugged in at same time and also both cables were tried by themselves in each outlet of the griffin charger by themselves.
Interesting huh. I will keep testing and see what gives, last resort I get a more powerful car charger. Will keep you guys posted, thanks to everyone that contributed and pitch in thus far.
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Got an update on this issue. I streamed another 45 mins to 1 hr of ESPN using watch ESPN app and the results are even more interesting. I was using the wall charger that came with the Droid charge and the USB cable that came with the I go green wall adapter that I have purchased at an airport a while back. Here is what happened, when I started streaming the battery was at 94% and I plugged in phone to charger and under settings/about/status it showed AC charging. After 45 mins to 1 hr of streaming the phone was extremely Hot towards the center of the back and below the cam lenses and led light. Also the battery had dropped to 93% and the phone status showed not charging, even though the battery icon on home screen next to clock shows the lightning symbol inside the battery like is charging.
I don't understand what is happening. Grrrrrr. This is using a wall a charger for a droid charge. Now of to trying it with the OEM charger and cable.
rfvreynoso said:
Got an update on this issue. I streamed another 45 mins to 1 hr of ESPN using watch ESPN app and the results are even more interesting. I was using the wall charger that came with the Droid charge and the USB cable that came with the I go green wall adapter that I have purchased at an airport a while back. Here is what happened, when I started streaming the battery was at 94% and I plugged in phone to charger and under settings/about/status it showed AC charging. After 45 mins to 1 hr of streaming the phone was extremely Hot towards the center of the back and below the cam lenses and led light. Also the battery had dropped to 93% and the phone status showed not charging, even though the battery icon on home screen next to clock shows the lightning symbol inside the battery like is charging.
I don't understand what is happening. Grrrrrr. This is using a wall a charger for a droid charge. Now of to trying it with the OEM charger and cable.
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The battery can stop charging if it gets too hot (safety measure).
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Herman76 said:
The battery can stop charging if it gets too hot (safety measure).
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Exactly, in the driver i think the overheat is set to 140F. Also when your charger showed as usb it only gets 509mA and when showing ac it gets the full 1 amp. So just pay attention next time and see if it drains when showing ac.
My car charger is a 1.3 amp and always shows as ac and never drains while charging.
Herman76 said:
The battery can stop charging if it gets too hot (safety measure).
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I though about that but then I was wondering, shouldn't the wall charger provide enough power to run everything in there while charging the battery or even without the battery in the phone. Like shouldn't the battery hold the charge that it already has when I started streaming as long as the charger is 1amp?
I would not care if when I stream the phone battery would just hold its charge at what it has at the moment even if it does not charge while streaming. Hopefully that is clear to understand.
To all the fellow galaxy nexus owners out there, maybe you all can test on your phones and see if you get same results as me. Download watch espn and stream the channel for 30 mins, notice what is your battery level before you start streaming, of course plug the phone to a car charger or wall charger and see if battery remains the same, drops charge, or gain charge at the end of 30 mins, or maybe an hour. I am not asking you to watch it for the 30 mins or 1 hour, just let it run and see what happen, if you can of course. only reason why I ask for watch espn is because it is the app that I have been using to stream nba games for the last few days.
Another thing since I am already here with this streaming issue, I have an original SlingBox, the cheapest of the cheapest when they first came out, just coax and that is it. I would like to know if I pay the $29.99 for the app from the market when i switch roms on my galaxy nexus would I lose the app? I have already unlocked and rooted my galaxy nexus and lets say I buy the app and I am running cm9 when I purchase it, if I change to gummy rom or back to a stock rom while still rooted would I have to re-buy the app ?
Thanks in advance for all the input.
Have u tried underclocking cpu with setcpu app?
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King Jeriamas said:
Have u tried underclocking cpu with setcpu app?
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No I haven't try that. I am currently testing out roms like a mad man trying to find the best for my liking. Question for ya, As far as I know that is kernel dependent right? Like the kernel has to support it, if so which kernels do support it and what would be good underclocking settings ?
I get similar results while using navigation and pandora at the same time, the phone uses more juice than the car charger can provide.
Ironically I plugged in the oem charger and oem cable from the galaxy nexus box and open it (didn't really wanyed to do that) and streamed 30 mins of espn on watch espn and battery was at 70% when I started after 30 mins streaming it had actually climb to 78%. Confused yet everyone? What gives?
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Not all that odd. Using my Fascinate charger (0.7 amp) I get noticeably slower charge times than the OEM charger (1 amp). I don't use my phone much while I'm charging so I can't provide any feedback for that.
What is the Droid Charge charger rated at?
Does anyone have issues where they are using their phone (just for simple tasks) and noticed your battery is draining significantly? Like right now, I'm typing and my battery just went down another percentage point while posing this.
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charging off USB or the wall? USB or car chargers often can't keep up with the drain of LTE phones if you're using them at all.
I'm on AC right now. I have a power strip that sits at the foot of my bed that provides my devices juice.
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Same issue
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nosit1 said:
Does anyone have issues where they are using their phone (just for simple tasks) and noticed your battery is draining significantly? Like right now, I'm typing and my battery just went down another percentage point while posing this.
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At which battery level % did this occur?
I'd say if it happens between the 100% to 95% range, its normal, as I have seen that with other phones too.
If it happens at any other percentage, maybe you're charger adapter is not supplying enough power, but that should not be an issue with the stock charger that came in the box.
Have you checked that it's actually charging at AC rate ? I was surprised to find that the charger for my Palm Pre 2 was charging @ USB, I swapped the cable for the one for my TouchPad (same charger) and it changed to AC charging. I'll try different cable and charger combinations when I get time.
Install "Battery Monitor Widget" and monitor the charging rate under mA.
I use the plug that came with the phone a usb to the ac adaptor. I install the app will see tonight when i charge. Also an other point when i charge at night arround 10 pm 5% in the morning wake up at 6 am my phone is charge at 95 to 97% so not fully charge plug all night
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Thereva pic not charging when screen on
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It says it's charging USB, not AC.
What does Settings -> Battery say when plugged in, AC or USB ?
Ok for some reason the adaptor that came with the phone when I charge say usb but when I use same adaptor and an other usb cable a blackberry one its say AC. What the...?
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Install BetterBattery to figure out what apps are being hung up (partial wakelocks) and re-install them. This drastically increased my battery life!
Also, the screen on wastes the most battery. Try dimming your brightness
Get a 1A charger.
patthe said:
Ok for some reason the adaptor that came with the phone when I charge say usb but when I use same adaptor and an other usb cable a blackberry one its say AC. What the...?
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Its the cable. Some USB cables have the data wires shorted or missing altogether and these USB cables are known as charging cables. All they can do is charge the phone. In AC mode. Bought a USB charging cable on amazon for 7 bucks now my car charger charges in AC mode.
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Wierd for the factory cable
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While having 4g on and downloading stuff and browsing the web?
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God no.... bad charger.
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stevie13.xo said:
While having 4g on and downloading stuff and browsing the web?
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Actually it really depends on a lot of things... I know my brothers epic has this problem if he's using navigation where he loses battery while plugged in.. and 4g is a big battery eater, especially if you don't have great signal...
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The bars are almost always empty.. no service inside this house but 4g works and has 2 bars.....
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As far as using 4g, id say yes
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When charging from the wall, the epic limits itself to drawing 900mA of current from the charger. If your demand is greater that 900mA, the battery will supply the rest. The only time I have this problem is when I use pandora & navigation over bluetooth or use navigation with wireless tethering. When charging from a PC USB port, i think it limits itself to 700mA.
It may be 700 and 500mA. Maybe someone else can chime it.
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stevie13.xo said:
The bars are almost always empty.. no service inside this house but 4g works and has 2 bars.....
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4g will eat your battery like a fat kid eats cake... quickly and often!
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It is the charger. Use a blacberry data cable to charge while u download ad anything else. I have downloaded 8gb of data in the past 2 days on 4g and have to use my data cable for better charging. The stock charger does not supply enough power to ur battery while using ur phone on 4g.
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you think its the battery she's had the battery now for over a year
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LORDFIRE00 said:
It is the charger. Use a blacberry data cable to charge while u download ad anything else. I have downloaded 8gb of data in the past 2 days on 4g and have to use my data cable for better charging. The stock charger does not supply enough power to ur battery while using ur phone on 4g.
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Like already stated it depends on the situation.
While at home i ve ran everything and even my phone at 108*F it still charging.
While in the car it charges but will lose battery if using gps
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I have had wifi tether, gps navigation, and bluetooth mp3 streaming all at the same time overclocked to 1.4ghz and lost battery like 30% an hour while on an AC charger in the car. Only way I think it didn't crash was that I had the air conditioning in my car aimed at it so it didn't overheat.
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not trying to sound like a jerk or anything, but you cannot compare a car-charger which is no more than 12volts of power to a wall charger that outputs 120v. including, if you are using gps, 4g, bluetooth..etc, all at the same time in the car, there is no way, and i mean no way possible that a car charger will give any kind of enough power to even possibly charge the battery. when you are using all these functions in your car, the power is streaming from both your battery and the car charger at the same time. as far as the battery's condition is concerned, there is a way to cycle the batter to possible get some new life out of it. it all depends if the cells are damaged or not, and if they are, how badly they are damaged.
---------- Post added at 04:33 AM ---------- Previous post was at 04:31 AM ----------
for experiment purposes, use all the functions in your home where you get 4g signal along with gps ...etc, and charge your battery with a blackberry data cable plugged into the wall. use it for awhile, then see how much the battery has charged.
I dare you to plug your phone into a wall charger that outputs 120 volts and watch it explode. Our chargers only output 5 volts.
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LORDFIRE00 said:
not trying to sound like a jerk or anything, but you cannot compare a car-charger which is no more than 12volts of power to a wall charger that outputs 120v. including, if you are using gps, 4g, bluetooth..etc, all at the same time in the car, there is no way, and i mean no way possible that a car charger will give any kind of enough power to even possibly charge the battery. when you are using all these functions in your car, the power is streaming from both your battery and the car charger at the same time. as far as the battery's condition is concerned, there is a way to cycle the batter to possible get some new life out of it. it all depends if the cells are damaged or not, and if they are, how badly they are damaged.
---------- Post added at 04:33 AM ---------- Previous post was at 04:31 AM ----------
for experiment purposes, use all the functions in your home where you get 4g signal along with gps ...etc, and charge your battery with a blackberry data cable plugged into the wall. use it for awhile, then see how much the battery has charged.
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Dunno if this was directed at me but I use a house AC charger plugged into my 400w power inverter in my car. It charges just as fast as in the house when phone is not in use.
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This is very common for me. Any kind of heavy data usage and the screen being on draws more than the phone can draw from the charger.
Ics with nyan seems to be the only one that will charge while using the phone.. weird
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LORDFIRE00 said:
not trying to sound like a jerk or anything, but you cannot compare a car-charger which is no more than 12volts of power to a wall charger that outputs 120v. including, if you are using gps, 4g, bluetooth..etc, all at the same time in the car, there is no way, and i mean no way possible that a car charger will give any kind of enough power to even possibly charge the battery. when you are using all these functions in your car, the power is streaming from both your battery and the car charger at the same time. as far as the battery's condition is concerned, there is a way to cycle the batter to possible get some new life out of it. it all depends if the cells are damaged or not, and if they are, how badly they are damaged.
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Actually, you can compare a car charger and a house charger. The phone charging circuit is responsible for regulating the current from the external supply. Both the house charger and the car charger have 5V regulated outputs with minimal over-current protection. In the old days, the 120V from the wall would be stepped down with a transformer (still @ 60 Hz) to say 7 or 8 volts, then rectified, filtered, and regulated. Now, the 120V is rectified first, chopped up at ~100kHz, transformed to a lower voltage, and re-rectified. By using a very high speed switching frequency, the magnetics can be shrunk significantly (which is why todays wall chargers are so much lighter). For a car charger, the initial rectification is not performed, because the input to the charger is already DC from the car, but otherwise, it is the same as the house charger. The battery in your car is a very stiff power supply, so the cell charger will easily be able to maintain its 5V output.
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I've just had a pretty long drive to take my son to the zoo.
I usually don't charge my phone in the car but because I only had 50% battery left I plugged in the car charger while I used Google navigation...
I had the charger plugged in the entire way and when I got there the battery had dropped by around 15%, so basically the navigation was killing the battery quicker than the car charger could charge it up.
Is that normal??? My screen brightness was on around 60%
Thanks for replies
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zolah said:
I've just had a pretty long drive to take my son to the zoo.
I usually don't charge my phone in the car but because I only had 50% battery left I plugged in the car charger while I used Google navigation...
I had the charger plugged in the entire way and when I got there the battery had dropped by around 15%, so basically the navigation was killing the battery quicker than the car charger could charge it up.
Is that normal??? My screen brightness was on around 60%
Thanks for replies
Sent from my Galaxy Nexus using xda app-developers app
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Well, yes its normal because most likely your car charger is a USB car charger, which charges slower than an AC charger. If you had a custom kernel, and had fast USB charge, then this wouldn't be a problem because it would charge fast enough.
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I've had battery drop while charging with navigation before, not nearly that bad though.
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EpiclyEpic said:
Well, yes its normal because most likely your car charger is a USB car charger, which charges slower than an AC charger. If you had a custom kernel, and had fast USB charge, then this wouldn't be a problem because it would charge fast enough.
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Sorry to sound dumb but i dont quite know what you mean there.
Its a straight charger from the ciggerette lighter to the micro USB port. It doesnt convert from the cig charger to a usb/micro usb cable
zolah said:
Sorry to sound dumb but i dont quite know what you mean there.
Its a straight charger from the ciggerette lighter to the micro USB port. It doesnt convert from the cig charger to a usb/micro usb cable
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Well, it means its charging with USB power (Which is about 500 mah.) and sometimes it can't keep up with the phone using power and charging it at the same time. However, if you get a custom kernel with a "Fast USB Charging" option you can make it charge just as fast as an AC wall charger. Therefore, solving your problem with the dropping battery while charging.
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Hi
Used my Note II for the first time on a long journey using google navigation, and even though it was plugged in throughout the battery was draining. According to current widget it was getting1698mA from my car socket whicj is the same as I get with the mains charger (sounds suspiciously identical in fact so I wonder whether its accurate..)
I'm using one of those 3 amp 2 socket chargers plugged into the 2 amp socket.
Surely it should be possible to charge and use at the same time? I can't believe it should be using over 1.6 amps to maintain the screen?
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Pics attached
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gingerprince said:
Pics attached
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Maybe you are not getting a constant uninterrupted charge. I had a similar problem with a TomTom SatNav, it was constantly letting me know the charger had just been reconnected. The quality and length of the cable is an important factor too. I discovered using a 3 metre cable at home caused my charger to struggle to keep up with the phone's demand. Changing the cable solved the problem immediately.
Not had any charger disconnected messages, and charging icon seems solid. Will try another cable though.
Ta
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gingerprince said:
Pics attached
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Make sure to check the Battery option of the settings screen while the charger is plugged in. You'll see either (AC) or (USB) next to "Charging", and that will tell you whether the USB car charger has the data pins shorted.
(USB) means the car charger doesn't have the data pins shorted, and the phone will not try to draw any more than 0.5A from the device. With CPU usage, and the screen on, this will definitely drain your battery. I remember it doing this with my Galaxy Nexus before, and the Note is no different - it needs even more power!
(AC) means the data pins are shorted (The middle two pins in a 4-pin USB connector), which means the device conforms to the USB charging spec. Lots of chargers that are designed for Apple devices don't have them shorted, because Apple doesn't use this to determine what charging speed it can charge at.
I'm in the process of looking for a good wall charger and a car charger that does a consistent 1.8A (The technical max for the Note II), as I have gone through several wall and car chargers that do not have data pins shorted.
Basically, the charging device needs three things:
1) Circuitry capable of delivering enough power: If the electric supply is only capable of providing a shaky 0.4A, then you might not want to use the charger
2) Shorted data pins: If the phone sees the data pins are shorted, it will try to draw more than 500mA, or 0.5A. The phone has to know that it's safe to try, though.
3) Good circuitry: If the first two are true, but the power is unreliable, the Android phone will only take as much power as the power supply can reliably give, minus 100mA. This means if a power charger is "capable" of 1A, AND has the data pins shorted, but it can only provide 400mA cleanly, then your phone will only ever draw 300mA from it.
There's an under-used program on the play store called "Galaxy Charging Current" - and it shows the three variables on the phone, "charging_now", "charging_max", and "charging_avg" - watching these when you have a charger plugged in can help you figure out what type of charger you have.