Develop Bugs

Galaxy Nexus 3G charging time (with graph)

Hello *@*,
I intentionally discharged my GN to a battery level of 1% today to record the charging time just for myself. Then I thought: why not make a graph out of it and share it with XDA?
Total charging time (1% to 100%): 142 minutes
Level checked at 0, 30, 60, 90, 120, 125, 130, 135, 140 and 142 minutes
WiFi On, 3G On, Sync On, Screen Off, no calls/msgs/notifications received, phone not used except for % check
1750 mAh Samsung stock battery & charger

Stock or extended battery? I've noticed my charge time varies wildly. Most of the time it's on par with what you've listed here, but every once in a while it goes up 30% in like 20 mins.

Drewmungus said:
Stock or extended battery? I've noticed my charge time varies wildly. Most of the time it's on par with what you've listed here, but every once in a while it goes up 30% in like 20 mins.
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3G, 1750 mAh stock battery. Sorry, I forgot about that.

Its so curious how the charge can be faster at the start

Rickymax said:
Its so curious how the charge can be faster at the start
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Get a more powerful charger.... I'm using my playbook charger, which uses a 2.1 amp... Way faster than 142 mins... Mine takes about 1:30 to charge from 1% to full.
Sent from my Galaxy Nexus

Rickymax said:
Its so curious how the charge can be faster at the start
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Click to collapse
All capacitors acts this way (a battery is also a capacitor) the charge/discharge is always fsstest to 63% both ways and after that it slowes down.. this can ofcourse be monitored and controlled with soft or hardware. But this is the reality of capacitors
Sent from my Galaxy Nexus using xda premium

big samm said:
Get a more powerful charger.... I'm using my playbook charger, which uses a 2.1 amp... Way faster than 142 mins... Mine takes about 1:30 to charge from 1% to full.
Sent from my Galaxy Nexus
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isnt it bad for the battery when it is not designed to receive charge that quickly?

All about charging LiIon batteries: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
TL;DR:
LiIons are charged in two main stages:
- stage 1 with constant current, that's the fast charging rate for (roughly) the first 2/3 of the batteries capacity
- stage 2 with constant voltage and a tapered charge current for the last 1/3 of the batteries capacity, that's the slow part where the graph flattens
This is necessary because a LiIon battery is full at exactly 4.20 V and can not handle any overcharge. In fact at ~4.55 V (only + 0.35 V!) the battery would "vent with flame" aka explode.
If you wanna do this on purpose, this is what will happen: http://www.youtube.com/watch?v=YCWdnjLqVWw
Using a more powerful charger can work if the electronics inside the GN handle the higher current properly. I wouldn't recommend it, though. It may charge quicker but it will wear down your battery faster as well.

The phone can only draw up to 1A regardless of much higher the charger is.
So if you're buying a charger, don't bother paying extra for a 2A, but there is no harm in using a 2A charger if you already have one.

wonshikee said:
The phone can only draw up to 1A regardless of much higher the charger is.
So if you're buying a charger, don't bother paying extra for a 2A, but there is no harm in using a 2A charger if you already have one.
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But I can assure you that my phone charges faster with my Playbook charger than the regular charger that came with the phone... How many amp the regular charger uses?
Sent from my Galaxy Nexus

big samm said:
But I can assure you that my phone charges faster with my Playbook charger than the regular charger that came with the phone... How many amp the regular charger uses?
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Stock charger is 5V/1A (=5 watts). There may be some leeway built into the GN's charging electronics so it can utilize more than 5 watts, but you can safely assume that Samsung would have packaged this phone with a 10 watt charger if it was safe (or desirable in terms of charging time vs. battery durability). Charging time is an important aspect after all.

The phone can absolutely handle it. I think Samsung is just too cheap to give us a rapid charger, I mean there was enough space in the box.
Sent from my Galaxy Nexus

My car charger is a 2amp charger and does approximetly 1 percent a minute. At home I connect it to my HP Touchpad charger and it seems to charge really quick.
But I LOOOOOOVE my car charger as it can charge my Tablets and phones fast. Well worth the 30 bucks I spent at Best Buy for the rapid charger.

surely a 2amp charger is capable of providing 2amps, but if whatever is attached only drawers 1amp then that's what it'll get ? It doesn't force 2 amps down it's throat ? My palm pre 2 charger is 1amp, my touchpad has a 2 amp charger, but my palm pre doesn't charge any quicker using the touchpad charger.

My Gnex does charge really fast using the plug that came with it especially coming from galaxy s2 which takes ages for a full charge.

alphaola said:
My Gnex does charge really fast using the plug that came with it especially coming from galaxy s2 which takes ages for a full charge.
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Click to collapse
+1 I found the gnex really fast charging compared to my sgs2. With the sgs2 I always had it plugged in for fear of a flat battery with the gnex the charging is so fast I don't care anymore.
Sent from my Galaxy Nexus using XDA App

AcE XBOX said:
My car charger is a 2amp charger and does approximetly 1 percent a minute. At home I connect it to my HP Touchpad charger and it seems to charge really quick.
But I LOOOOOOVE my car charger as it can charge my Tablets and phones fast. Well worth the 30 bucks I spent at Best Buy for the rapid charger.
Click to expand...
Click to collapse
FYI, 1% a min is roughly 1A.
In 1 hour, it would restore 60%, 60% of 1.750A = 1.050A.
Nexus battery is the perfect size to eyeball the inflow rate.
30%/hr = .5A
60%/hr = 1A
60%/30min = 2A
If you think you're charging at 2A, simply time it. Also these are rough numbers and will only be accurate when the battery is low.

How long does it take to charge z1c using usb on laptop?

Hi, it's taking a really long time to charge my z1 compact using the usb port on my laptop (macbook air 2010).
It's been an hour and i'm at 27%.
Is this normal?
Also, is quickcharge 2.0 enabled on our phones? Would it make usb charging from a laptop faster? (I think mine is just 0.5 A, whatever Apple gives you).

Not sure on laptops but on my PC I could charge it for 3 hours to 100%.... While on dock I could charge it like 50minutes and it's full. Quickcharge 2.0 works only on chargers with quickcharge 2.0 support. Hence it won't work on laptops. And it's alot more slower since laptops has lower current output on USB ports than usual outlet chargers.
lamenramen said:
Hi, it's taking a really long time to charge my z1 compact using the usb port on my laptop (macbook air 2010).
It's been an hour and i'm at 27%.
Is this normal?
Also, is quickcharge 2.0 enabled on our phones? Would it make usb charging from a laptop faster? (I think mine is just 0.5 A, whatever Apple gives you).
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Click to collapse

Riyal said:
Not sure on laptops but on my PC I could charge it for 3 hours to 100%.... While on dock I could charge it like 50minutes and it's full. Quickcharge 2.0 works only on chargers with quickcharge 2.0 support. Hence it won't work on laptops. And it's alot more slower since laptops has lower current output on USB ports than usual outlet chargers.
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whhaatt????
i charge using the dock an it fully charged my Z1c at least 3 hours. how can u fully charged yours at 50 minutes only?

I guess it depends on what you plug the dock into. I haven't timed it but I'm pretty sure mine charges from about 40% to 100% in under an hour. I plug the dock into a usb power adapter.
---------- Post added at 09:18 PM ---------- Previous post was at 08:51 PM ----------
Returning to the op's question, if I connect the phone to my macbook pro and then close the lid, the phone stops charging immediately. It charges just fine if I leave the lid open. I only tried it once overnight so I don't know how long it took to fully charge.

casablanko said:
whhaatt????
i charge using the dock an it fully charged my Z1c at least 3 hours. how can u fully charged yours at 50 minutes only?
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I use the sony charger that's bundled in the box and connect the dock USB cable in there. That's just it... More or less 1 hour on average charge time at least...

Riyal said:
I use the sony charger that's bundled in the box and connect the dock USB cable in there. That's just it... More or less 1 hour on average charge time at least...
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Model?
Charger suplied with my z1c is EP880.
About 2hrs20minutes from 5% to full battery.
And i think that is good, charging full battery in 50minutes isnt good for battery health.

Same as yours also... EP880. It says here output is 5.0VDC and 1500mAh. I'm pretty sure the battery is ok as it's holding a 2-3 day lifespan before I can drain it to lower 10%. Although I'm no power user. I mostly use the phone for texting and web surfing... The most battery hog usage I can do is reflashing ROMs in recovery which could deduct 1 to 4% of battery after reboot. Our electricity standards here are 220v of current.
poolmaker said:
Model?
Charger suplied with my z1c is EP880.
About 2hrs20minutes from 5% to full battery.
And i think that is good, charging full battery in 50minutes isnt good for battery health.
Click to expand...
Click to collapse

@poolmaker
Here's a pic of the charger... Man macro on lowlight rocks on z1 compact

Nice shot Riyal.
Same battery/charger/phone but 250% faster charging?
Thats a riddle for sure, laws of physics says that one of factors in equation must be different.
I suggest you to check yours battery in service centre.
2300mAh (healthy) battery can be charged with stronger charger in 50 minutes, ofcourse that isnt good for her longevity.
But with ours EP850 charger thats impossible, battery or electronics inside phone must be messed up.

Calculating with an output of 500mA from an USB 2.0 port, the charging time (0 -> 100%) will result in approximately 5hours. (Note that the battery is normally never at 0mAh)

poolmaker said:
Nice shot Riyal.
Same battery/charger/phone but 250% faster charging?
Thats a riddle for sure, laws of physics says that one of factors in equation must be different.
I suggest you to check yours battery in service centre.
2300mAh (healthy) battery can be charged with stronger charger in 50 minutes, ofcourse that isnt good for her longevity.
But with ours EP850 charger thats impossible, battery or electronics inside phone must be messed up.
Click to expand...
Click to collapse
Nah no need... I'm pretty sure battery is ok as whenever I charge it on my PC it's charging slow also like any other phones. So I think this is just really qualcomm's quickcharge 2.0 kicking in... Anyways I observed the phone. It's not heating up or whatever probably it's just because of the battery quality. It must be having good chemical reaction when charging hence less waste on energy.

Riyal said:
So I think this is just really qualcomm's quickcharge 2.0 kicking in...
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Click to collapse
Yours phone is .114 firmware also?
Well, something must be different, my phone and others are charging 2 or more hrs on EP880.

Found something interesting...
I have a energy monitor (http://www.elv.at/elv-energy-master-basic-energiekosten-messgeraet-1.html) between EP880 charger and the wall outlet.
If I use the usb cable EC801 (witch comes with Xperia Z1C) on my dk32 dock, the e-mon. shows about 7.5W energy consumption @~50% battery level !
If I use the usb cable EC450 (witch comes with my Xperia P) on my dk32 dock, the e-mon. shows about 5W energy consumtion @~50% battery level !
Conclusion: Phone charges much more faster with EC801 !
I like the older cable because its much more flexible then the new one - so that's the reason I used the old one and than I saw the differences on the measurement device....
FYI: Charging power is also depended on battery level -

Whats yours charging times (from 5-100%)?
Mine 2hrs-2hrs 20min.
I have EC-801 cable and DK31 dock with hims factory cable, same charging times on both.

poolmaker said:
Whats yours charging times (from 5-100%)?
Mine 2hrs-2hrs 20min.
I have EC-801 cable and DK31 dock with hims factory cable, same charging times on both.
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Click to collapse
Can`t say that for now because I have the phone since a few days....
Edit: Charging time from 20-90%(green led) is 90min. and for the last 10% further 30min.

czrtst said:
Can`t say that for now because I have the phone since a few days....
Edit: Charging time from 20-90%(green led) is 90min. and for the last 10% further 30min.
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Click to collapse
Yes, thats it, 2hrs is minimum from 5-10% to full battery (with EP880 charger ofcourse).

Very slow charging

Anyone else notice that with the supplied charger charging ins't what it should be. My iPhone 5 charged almost twice as fast as this phone. I find it kind of annoying. I did order one of these chargers hoping that solves the issue.
http://www.amazon.com/gp/product/B00HPTU00E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

The supplied charger is charging rapidly no doubt.
I guess not less than 1% per minute - particularly when below 70%..

jauhien said:
The supplied charger is charging rapidly no doubt.
I guess not less than 1% per minute - particularly when below 70%..
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Click to collapse
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.

I'm having literally no issues with charging from dead to 25% in about 15 minutes. 2 hours to 100% im very happy with the speed of charging and this is using my m8 charger as the m9 one is still sealed in box.
Sent from my D5803 using XDA Premium HD app

MattMJB0188 said:
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.
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I went with this one and it working like a champ, 30% to 100% in 50 min
https://www.amazon.com/gp/product/B00QTJZ3D0/ref=od_aui_detailpages00?ie=UTF8&psc=1

I've been using the GS4 charger, with a high output cable. The Samsung charger is 1.5A where the HTC m8/m9 charger is 1.0A

the supplied charger is definitely giving 1.5 amps to mine. charges up pretty quick. with a quickcharge 2.0 charger it's crazy fast to charge.
One thing to note is it will take a faster charge the lower the battery level is, which means more heat. if you're also gaming with it, you could be bumping against the battery charging cutoff temperature. I only ever saw this happen on my Tegra HOX+. IIRC HTC has the notification LED blink in alternating green and orange/red when this happens. I'm guessing you would have mentioned temperature in the OP if this was the case, but I figured I'd bring it up.

gonzo237 said:
The Samsung charger is 1.5A where the HTC m8/m9 charger is 1.0A
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Just spread your arm, pick whether HTC M8 or M9 charger, and read upon it.. 8)
Both M8 and M9 chargers are - 1.5 Ampere.. furthermore both handhelds are charging fast - otherwise if the cable is a problem..

jauhien said:
Just spread your arm, pick whether HTC M8 or M9 charger, and read upon it.. 8)
Both M8 and M9 chargers are - 1.5 Ampere..
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Sorry, meant it was 1.5a for HTC and 2.0a for the Samsung one. Didn't have them on hand to check.

iPhone 5 battery is 1,440 mAh... M9 battery is 2,840 mAh. 50% charge of Iphone battery doesn't equal 50% charge of M9 battery, in terms of charge time.
I believe the rate of charging to decrease while you use it to prevent the phone from overheating. (My M8 does this as well)
My stock charger is fast, and my quick charge 2.0 is crazy fast.

MattMJB0188 said:
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.
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Click to collapse
If you are using your phone and charging at the same time, it will take longer to charge....

as someone who had a nexus 6 with turbo charging. this is bad. charging is so slow.

joetang97 said:
If you are using your phone and charging at the same time, it will take longer to charge....
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Click to collapse
I got a qualcomm 2.0 charger and now its super fast.

MattMJB0188 said:
I got a qualcomm 2.0 charger and now its super fast.
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Click to collapse
Yeah, this. I got an HTC Rapid Charger 2.0 for it just to be sure since I knew with certainty it's Quick Charge 2.0. In retrospect perhaps not the best move considering I'm essentially incentivising HTC for not including one in the box from the get go, but whatever.

MattMJB0188 said:
No its not. Especially when your using the phone and its on 5% plugged in. Takes forever to reach 6%.
Click to expand...
Click to collapse
Yup i got the same issue gonna take me 6-11hrs to charge and its very slow charging

I had a similar problem to OP. The second night I had my phone I plugged it in at 11 pm with about 5% battery left and went to bed. At 5:15 the next morning (6 hours later) it was only at 85%. I can't tell if there's still a problem or I just think there is because I'm paranoid about it now. I haven't run my battery down that low since, and looking at the charge current with Ampere seems somewhat inconclusive. I may have to run it down and then keep an eye on it while charging to see what's going on.

Something IS wrong with SOME M9 phones (I think)
I have one of the "bad" ones. Mine takes hours and hours to charge, whether on the cable and plug that came in the box, or on any others that I have around - some I know are 2 Amps. I think there is something seriously wrong with some of these phones, based on what I am reading in this thread, and on my own example. I have had my M9 for just a few days.

I'd like to post a follow up to this thread after having the phone for a couple of weeks now.
I've had several occurrences where my phone didn't fully charge overnight. The worst was a few days ago, I plugged it in at 5% and the next morning (6-8 hours) it was at 1%, it actually lost charge. I noticed before unplugging it so I looked at the history in Battery Widget Reborn and it showed the battery level just slowly dropped from 5% to 1% without any jumps or dips. The battery icon at the top of the screen showed it was charging but it died at that point so I didn't get a chance to open Ampere.
I think it's the charger (and/or the cable) that came with the phone. I've tried several other chargers that have all worked reliably:
- The QuickCharge 2.0 charger that came with my wife's S6 charges my phone really fast.
- I have a Kmashi external battery that also seems to charge it relatively quickly.
- Two older chargers that are several years old (both rated 5 volts at 0.7 amps) charge it from around 30% to full in 3-5 hours.
At first I thought it might have been a wakelock problem, but the battery has been dropping so slowly when the phone is just sitting in my pocket that I'm confident now that it's not wakelocks. I don't know if HTC is likely to send a replacement, but I'm going to stop into the Verizon store that I got the phone from to see if they'll replace it.
Gilligan

My phone is also odd when charging.
Half of the time it takes 6 hours or more to charge. If I look at GSAM battery monitor it shows a charge current of around 350mA. If I then unplug the charger and reconnect after 15 seconds I get over 1300mA charging current, most of the time. (It takes GSAM a while to show an accurate reading). Occasionally it will take a few tries to get it right. Once I get a good reading over 1300mA the phone will charge in 1.5 hours like it should.
Something very buggy about this phone's charging circuit. I get the same behaviour with all chargers and cables, even my battery bank.

MattMJB0188 said:
Anyone else notice that with the supplied charger charging ins't what it should be. My iPhone 5 charged almost twice as fast as this phone. I find it kind of annoying. I did order one of these chargers hoping that solves the issue.
http://www.amazon.com/gp/product/B00HPTU00E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Click to expand...
Click to collapse
I use a 2A tablet charger from my hp touchpad. Charges from dead to 100% in 45 minutes.

slow charging

Ok so tmobile lg g8 wont charge up above 980ma current regardless of the charger or cables used and regardless of the battery level. So basically charging at less than 4 watts total. My one plus 6t will do at least 12 to 15 watts low battery charging.
What gives???

You might have a defective unit. I don't have any measurements, but my T-Mobile unit charges quickly with both OEM and third party chargers.

Ok did a test in stock charger took 1 hour 42 minutes to fully charge. Whats anyone else getting?

madcowintucson said:
Ok so tmobile lg g8 wont charge up above 980ma current regardless of the charger or cables used and regardless of the battery level. So basically charging at less than 4 watts total. My one plus 6t will do at least 12 to 15 watts low battery charging.
What gives???
Click to expand...
Click to collapse
Could be the Optimized charging option in Setting/Battery. Uncheck and try again. This will slowly charge the phone to prevent unnecessary overheat and prolong the battery lifespan.

That option was turned off

madcowintucson said:
Ok did a test in stock charger took 1 hour 42 minutes to fully charge. Whats anyone else getting?
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Click to collapse
Hi
I've not got the phone but as the charger isn't a proprietary one like Huawei and OnePlus the average charging time is about right. I had the HTC U11+ which had the same charger Quick Charge 3.0 and took over 1 hour 30 to charge.
Currently have an OnePlus 6T and the charger we get will charge the phone in over an hour.

madcowintucson said:
Ok so tmobile lg g8 wont charge up above 980ma current regardless of the charger or cables used and regardless of the battery level. So basically charging at less than 4 watts total. My one plus 6t will do at least 12 to 15 watts low battery charging.
What gives???
Click to expand...
Click to collapse
Are you measuring the charge rate with the screen on? If so then that's your problem. Charging is limited to 5W when the screen is on to limit heat buildup. You'll need something like 3C battery monitor to record the rate when the screen is off. I've attached an example of my V40 charging on my Anker Powerwave 7.5 stand. With a wired fast charger it tops out at 2600ma.View attachment 4750253
Sent from my LM-V405 using Tapatalk

Question S22 Base Charging Confusion / Poor Charge Speed

I have had my S22 base for about a week, and while I am still concerned with the life I'm getting (same apps and usage pattern, about 4+ hours of SOT and 15 hours of mixed use) vs the S9, I had decided to keep it until ...
I can't get the thing to super/fast charge. I do not have a Samsung charger (waiting until I get my voucher) but do have a number of 15W and 25W PD-compliant chargers that work on everything from my S9 to my laptop. Unless I turn the phone off, all of those chargers charge S22 at a rate of 10-20% per hour, with Accubattery readings in the 200-1100 maH range, NEVER a value over that. The battery temp and voltage are well in spec. It is currently plugged into my laptop PD compliant charger at a rate of 900 mA with a "time to 100%" of 30h.
Likewise, I bought 2 car chargers that are S21 certified as well as QC3.0 and PD3.0. It has a 30W port. I used the cable that came with either charger (I've tried a ton of cables) and sometimes it gives a "0mA" reading while other times it goes 200mA-800mA at a good voltage. That means while I don't lose charge, I also don't gain. On my 30 min drive home I went from 23% to 24% with dark mode and no apps running.
Finally, to extend the mystery, depending on which aftermarket charger I use the phone itself thinks I'm Fast Charging or Super Fast Charging, reporting that on the lock screen and battery screen. On that screen it says something like 30m to 100% even though the observed charge rate is much lower.
Samsung won't talk to me unless I'm using a Samsung charger and I can't wait until I get the voucher/those are in stock ... I have 5 days to return it and unless you can help me (Obi Wan) I'll be back on that track.

icewiz1 said:
I can't get the thing to super/fast charge. I do not have a Samsung charger
Click to expand...
Click to collapse
I use my old 25W (original from N10+) charger and it takes about 1 hour to charge from 15-20% to full. I have the DevCheckPro app showing me at the start 17-18W and about 6-7Amps of charge load initially, at the beginning.