Database Develop

Slow battery charging, battery tips?

I'm a recently new owner of the note. One of the first things I noticed was battery issues.
First, it seems as though my battery charges exceptionally slow regardless of whether I charge through a mains outlet or my computer. There have been times when I am charging and playing a CPU-intensive game and my battery power actually goes down, and once as a test I brought my battery to 4% and then let it charge overnight, and woke up to it at 90%.
second, I am running it rooted on the stock rom (kk4 I think?) and I am wondering if there are any system tweaks that improve performance and battery life, such as build.prop modifications. I am not a new Android user so I already know about reducing brightness, managing push services, all that stuff.
Sent from my GT-N7000 using XDA App

Note takes almost 4 hours to charge 100%. i guess you are using original Note Charger. Try flashing any new kernel and new ROM.

So it's because of the original charger? I still have my Dell Streak charger that outputs through USB, and I remember if I charged through the mains it would go much faster, though I am unsure of it's safety. As long as it's USB there's no risk of it frying my note, is there?
I sort of want to hold off on flashing a new rom until ISC becomes available in a mostly-working state. I am sure there are a few entries in build.prop that all the custom roms use?
Sent from my GT-N7000 using XDA App

gilrad said:
So it's because of the original charger? I still have my Dell Streak charger that outputs through USB, and I remember if I charged through the mains it would go much faster, though I am unsure of it's safety. As long as it's USB there's no risk of it frying my note, is there?
I sort of want to hold off on flashing a new rom until ISC becomes available in a mostly-working state. I am sure there are a few entries in build.prop that all the custom roms use?
Sent from my GT-N7000 using XDA App
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Click to collapse
The only risk is Amperage. A Dell Streak wall wart spits out 5V DC at 1A current. I use the very same to charge my Note, with no issues at all. I am unsure what the stock Note wall wart spits out as, to be honest, I never took it out of the packet. I would hazard a guess that it would be identical to the Galaxy S II charger at 0.7A, though. This would explain the slower charging rate you're noticing.
It may be a purely superstitious thing on my part, but I never charge mobile devices with anything over 1A of current unless they specifically require it.
I have a 2A wall wart at home that did crazy things to an old Desire (warmed the back very noticeably and subsequently impaired the battery's ability to hold charge). It's for this reason I stick to 1A, plus I find it quick enough for my liking.
Best of luck with a solution

I use the stock charger. It is 1A. It also charges quite slowly compared to some. There is a lot of juice needed to fill the Note's battery. Unlike some 1200 or 1600 mAh, it takes 2600 mAh. That takes time, is all.
---------- Post added at 06:31 AM ---------- Previous post was at 06:29 AM ----------
BTW using the Note, especially for gaming, can drain the battery faster than the charger tops it up. It appears the Note does not (or cannot?) draw anything from the power input to leave the battery to charge. The result is not a good or fast charge IMO.
I would not recommend doing this often as it tends to stuff up the metrics and give false readings in my experience.

jeromepearce said:
I use the stock charger. It is 1A. It also charges quite slowly compared to some. There is a lot of juice needed to fill the Note's battery. Unlike some 1200 or 1600 mAh, it takes 2600 mAh. That takes time, is all.
---------- Post added at 06:31 AM ---------- Previous post was at 06:29 AM ----------
BTW using the Note, especially for gaming, can drain the battery faster than the charger tops it up. It appears the Note does not (or cannot?) draw anything from the power input to leave the battery to charge. The result is not a good or fast charge IMO.
I would not recommend doing this often as it tends to stuff up the metrics and give false readings in my experience.
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Your second point especially is very valid. This wouldn't be the first device unable to 'keep up' with juice demands while flat out
Sent from my Galaxy Note using XDA Premium

Personally, I prefer a slow charge to a fast charge. Less chance of heating up the battery.

A 2 amp charger can charge the note slightly faster (the iPad charger for example)
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slow charge is a perfect charge.

mfractal said:
A 2 amp charger can charge the note slightly faster (the iPad charger for example)
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How is that when the kernel only allows 1A.

EarlZ said:
How is that when the kernel only allows 1A.
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not sure how is that, all i can tell you is that i compared charging from 0 to 100 with the original charger and with a 2 amp one. Original charging time was 3:35, while the time with the 2 amp charger was just under 3 hours.

Remember also that a standard USB 2.0 port allows a max of 0.5A: "A device may draw a maximum of 5 unit loads (500 mA) from a port in USB 2.0" http://en.wikipedia.org/wiki/Universal_Serial_Bus
So when you charge the note using a PC (or a MAC) the process takes twice as long compared with wall charger. And if you're using the Note during the charge usually it won't charge at all, because it requires more power than it is supplied by USB port.

The note uses a Summit smb136 to charge... That chip can handle up to 1400mA in, and 1500mA to the battery. I don't have my Note yet to tinker much with the kernel sources, but I've worked with this chip on the galaxy tab 7.0 Plus (and have it doing some interesting things.)
Examining the source, it appears that the chip is being limited to 950mA from the wall charger and 500mA from all other sources. Depending on how it's detecting the charge source, it's likely limiting to 500mA for all "unknown" charging sources. (I'll investigate that after I've had the note for a couple days and get a feel for it.)
It should be easy enough to modify the kernel to allow more power draw from iphone/ipad chargers... and even to open up USB charging some more (but there's a risk involved with drawing too much current from a source than isn't designed for it. I've killed a netbook's usb port that way.)
Take care
Gary

Portable Chargers / External Batteries

I have the VS980 from Verizon.
Does anyone know if there are any portable chargers / external battery packs that will charge this phone without giving an incompatible or "slow charging" notice? If there aren't any that fast charge, are there any that slow charge? Slow charge would still be better than a dead battery.
I find the battery life is mostly great, but some days it seems to run down quite quickly. In any event, I'm going on a trip and may not have access to a charger during day and plan to be taking lots of pictures and videos and listening to music, so I'd like a back-up battery, just in case.
(curse Verizon and their non-removable battery...)
Anyway, there are threads for compatible car chargers, wireless chargers and USB cables, so why not add one for portable chargers / external batteries? Please list them here!

I purchased 9000 mAh portable charger from walmart online shop for about 70 to 80 dollars, and it seems to work fine. Its just bit bigger then other portable chargers, but ull never have to worry about battery with this monster.
I have tmo version btw
Sent from my LG-D801 using xda app-developers app

ILLHYHL said:
I purchased 9000 mAh portable charger from walmart online shop for about 70 to 80 dollars, and it seems to work fine. Its just bit bigger then other portable chargers, but ull never have to worry about battery with this monster.
I have tmo version btw
Sent from my LG-D801 using xda app-developers app
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Click to collapse
Way to much $$$$
Check out this
http://www.amazon.com/gp/aw/d/B008YRG5JQ/ref=mp_s_a_1_1?qid=1381189010&sr=8-1&pi=AC_SX110_SY165_QL70
Sent from my LG-D801 using XDA Premium 4 mobile app

Slow Charging?
ILLHYHL said:
I purchased 9000 mAh portable charger from walmart online shop for about 70 to 80 dollars, and it seems to work fine. Its just bit bigger then other portable chargers, but ull never have to worry about battery with this monster.
I have tmo version btw
Sent from my LG-D801 using xda app-developers app
Click to expand...
Click to collapse
Thanks for your reply! Does this device give a "slow charging" notification?

I have both these and both charge at full speed:
http://www.amazon.com/Portable-External-Micro-USB-Rechargeable-Smartphones/dp/B00CEZJT2E
http://www.amazon.com/13000mAh-Portable-Dual-Port-Thunderbolt-Incredible/dp/B00BQ5KHJW
theres also the E5 which is 15000mah, any anker that outputs 2a will charge the phone at full speed as the charger the G2 comes with outputs 1.8a

Not just amperage
djkinetic said:
I have both these and both charge at full speed:
http://www.amazon.com/Portable-External-Micro-USB-Rechargeable-Smartphones/dp/B00CEZJT2E
http://www.amazon.com/13000mAh-Portable-Dual-Port-Thunderbolt-Incredible/dp/B00BQ5KHJW
theres also the E5 which is 15000mah, any anker that outputs 2a will charge the phone at full speed as the charger the G2 comes with outputs 1.8a
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The problem is, it seems that the phone doesn't just go by amperage, but also by the cable. The OEM USB cable has 20AWG wires, which carries a higher load, and cables which have thinner wires seem to trigger the slow charging. The only way to know if these chargers would charge at full speed would be to plug them in.
Has anyone actually plugged any of these in to verify that they do the full speed charging without a 'slow charging' notification?

gwbyrd said:
The problem is, it seems that the phone doesn't just go by amperage, but also by the cable. The OEM USB cable has 20AWG wires, which carries a higher load, and cables which have thinner wires seem to trigger the slow charging. The only way to know if these chargers would charge at full speed would be to plug them in.
Has anyone actually plugged any of these in to verify that they do the full speed charging without a 'slow charging' notification?
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Ive used all types of cables on my g2 with the chargers I listed they don't trigger slow charge. For me at least.
Sent from my GT-I9505G using Tapatalk 4

hilarious jab at samsung

Idk if this is just for the vzw version of the g2 but anytime i plug it in to one of my samsung chargers that came with my galaxy nexus (when on the stock vzw rom), instead of going to slow charge mode it says something along the lines of it being a substandard charger and that i should plug the cord that came with my g2 to charge it safely then cuts the power. Has this happened to anyone else using samsung chargers? Or could it just be that it really did dectect something wrong with the 2 particular samsung chargers i tried?

blazewit said:
Idk if this is just for the vzw version of the g2 but anytime i plug it in to one of my samsung chargers that came with my galaxy nexus (when on the stock vzw rom), instead of going to slow charge mode it says something along the lines of it being a substandard charger and that i should plug the cord that came with my g2 to charge it safely then cuts the power. Has this happened to anyone else using samsung chargers? Or could it just be that it really did dectect something wrong with the 2 particular samsung chargers i tried?
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The actual charger that comes with the G2 has integrated QuickCharge 2.0. Hence why you will notice much, much faster charge times.
Not many other chargers and phones have this capability.

I get that with a BlackBerry charger, too. It has to do with the amperage output.
SeanRinVA
Sent from my Verizon LG G2 using Tapatalk

SeanRinVA said:
I get that with a BlackBerry charger, too. It has to do with the amperage output.
SeanRinVA
Sent from my Verizon LG G2 using Tapatalk
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Oh ok lol i thought it was a little brazen to just not allow your competitors chargers to work as all the other non samsung chargers i have at least will slow charge.

Berlinetta said:
The actual charger that comes with the G2 has integrated QuickCharge 2.0. Hence why you will notice much, much faster charge times.
Not many other chargers and phones have this capability.
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Yea i get that its faster w the stock charger what i was saying is that normally you get a notification when using a non stock charger that its in slow charge mode but with all my samsung chargers it wont charge at all, it shuts it off compleatly. I thought it was a Samsung specific thing but apparently it has to do with certain amperage outputs it wont let the phone charge with

Berlinetta said:
The actual charger that comes with the G2 has integrated QuickCharge 2.0. Hence why you will notice much, much faster charge times.
Not many other chargers and phones have this capability.
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Click to collapse
You make it sound so special
It's nothing more than a high output charger. Plug it in an Ipad or > 2.0 AMP charger and it will charge just as fast, without the fancy "2.0" technology

Ohhh so thats why it charges so fast! Mine gets 15% up in literally 15 minutes lol. I go bed 21:45, at 22:00 its already beeping that its full back from 85% xD Great stuff really:good:

Yeah idk it seems like it does charge a lot faster, definitely a lot faster than my S III
Sent from my LG-G2 using Tapatalk

This phone is stupid with chargers.
I have a dual charger, 2.3 amps and 1 amp. It fast charges on the 1 but complains about the other.
It complains about an HTC cable and cuts charging, but will charge normally when simply unplugged and plugged in again.
Sent from my LG-G2 using Tapatalk

Recommended first time charge?

Hi there guys, today a friend of mine will bring me my Galaxy Tab S2 that she bought for me. What would be the recomended first charge time for this? I've tried to find that info in Google but no luck at all.
Don't know if the battery effect/memory effect affect this Li-Ion batteries and if I have to leave it charging long after getting the "%100" battery charge or just unplug it right there...

i left mine on to drain it completely, and it took between 4 to 5 hours to charge to 100% while turned off, using the stock Samsung 5V 2A charger.

d0cx said:
i left mine on to drain it completely, and it took between 4 to 5 hours to charge to 100% while turned off, using the stock Samsung 5V 2A charger.
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Thanks for the post. Finally I got it to %30~40 and left it charging up turned on but with wifi off with the stock charger connected to the wall.

d0cx said:
i left mine on to drain it completely, and it took between 4 to 5 hours to charge to 100% while turned off, using the stock Samsung 5V 2A charger.
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This is not required or advised with modern batteries and devices.

d0cx said:
i left mine on to drain it completely, and it took between 4 to 5 hours to charge to 100% while turned off, using the stock Samsung 5V 2A charger.
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ashyx said:
This is not required or advised with modern batteries and devices.
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Now I have a doubt. I've the original charger and one original charger from a Samsung Galaxy 3 I think.
Tab S2 Charger
Input: 100-240v
Frequency: 50-60Hz 0.35A
Output: 5.0v = 2.0A
Galaxy S3 Charger
Input: 100-240v
Frequency: 50-60Hz 0.15A
Output: 5.0v = 1.0A
According to what I've read, you can use another charger that gives the same or less output but it can't have more. In this case the amperes are less so it will take more time to charge, right?
I'm asking this cause this to know if it's safe to use this other original Samsung charger or not.

You can use any charger with it. The Tab S2 only supports up to 2A so it won't take more than that. I tried charging the tablet with my Nexus 6 QC 2.0 charger and it performed the same as the stock 2A Samsung charger. If you use a 1A charger, it will work fine but it will take twice as much to charge.

d0cx said:
You can use any charger with it. The Tab S2 only supports up to 2A so it won't take more than that. I tried charging the tablet with my Nexus 6 QC 2.0 charger and it performed the same as the stock 2A Samsung charger. If you use a 1A charger, it will work fine but it will take twice as much to charge.
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As far as I know it's not recommended to use charger with more output voltage than the original. For example I've a Galaxy Note 3 and the Output is 5.3v instead of the 5.0v of the Tab S2 charger. That can cause trouble according to what I've read.

There are many things that are not recommended. That doesn't mean they won't work or that can cause damage or problems. It's just a recommendation. Like I said, I have used several different chargers, and they all work just fine, as long as they are 5V/2A. All genuine "Turbo" chargers scale back to the usual 5V/2A if the device doesn't support Turbo charging, which is why the Nexus 6 charger (and any QC 2.0 charger) works with the Tab S2.
If you use a charger and/or cable combination that outputs 500 mA or 1 A, it will display an X in the battery icon in the status bar and it will charge very slowly, or not at all if it's turned on and in use. For example, the micro USB cable that comes with the Google Chromecast has a resistor that caps the power passed thru the cable to less than 5V/1A so that cable won't work, regardless of it being connected to a 5V/2A charger.

d0cx said:
There are many things that are not recommended. That doesn't mean they won't work or that can cause damage or problems. It's just a recommendation. Like I said, I have used several different chargers, and they all work just fine, as long as they are 5V/2A. All genuine "Turbo" chargers scale back to the usual 5V/2A if the device doesn't support Turbo charging, which is why the Nexus 6 charger (and any QC 2.0 charger) works with the Tab S2.
If you use a charger and/or cable combination that outputs 500 mA or 1 A, it will display an X in the battery icon in the status bar and it will charge very slowly, or not at all if it's turned on and in use. For example, the micro USB cable that comes with the Google Chromecast has a resistor that caps the power passed thru the cable to less than 5V/1A so that cable won't work, regardless of it being connected to a 5V/2A charger.
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The idea, regardless that if it charges slower than the original, is that the other charger doesn't cause trouble nor damage in the tablet. The Samsung S3 original charger 5V/1A will only charge slow but won't cause trouble, right? The Galaxy Note 3 with 5.3V could cause trouble/damage.

S2 must be different to the Tab S then as I've been using my chromecast charger and cable and a 700ma Samsung charger for the past 12 months no problem, admittedly usually when it's turned off.
I have no bones about using whatever charger I have to hand as long as it's 5v or thereabouts.
---------- Post added at 04:31 PM ---------- Previous post was at 04:26 PM ----------
XinsaX said:
The idea, regardless that if it charges slower than the original, is that the other charger doesn't cause trouble nor damage in the tablet. The Samsung S3 original charger 5V/1A will only charge slow but won't cause trouble, right? The Galaxy Note 3 with 5.3V could cause trouble/damage.
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You'd be hard pressed to find a charger that outputs it's exact specifications. The circuitry in modern devices can handle these slight differences as it's an expected tolerance.

ashyx said:
S2 must be different to the Tab S then as I've been using my chromecast charger and cable and a 700ma Samsung charger for the past 12 months no problem, admittedly usually when it's turned off.
I have no bones about using whatever charger I have to hand as long as it's 5v or thereabouts.
---------- Post added at 04:31 PM ---------- Previous post was at 04:26 PM ----------
You'd be hard pressed to find a charger that outputs it's exact specifications. The circuitry in modern devices can handle these slight differences as it's an expected tolerance.
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Didn't know that modern tablets could handle those differences between 5V to 5.3V. And to be honest and didn't want to take chances so I preferred to ask here.
The good thing is that I've now two chargers in case of need.
Thank guys!

The Chromecast charger and/or cable will work with the tablet. It will just charge a lot slower, and if the tablet is powered on and being used while charging, it will actually be discharging because the charger won't charge the tablet because it will be draining more power that it's receiving.
The 5.3V or 5.1V it's more or less not important here, as the tablet won't accept a charge higher than that and tolerances, etc... And if we're talking about branded chargers, those are usually good with their specs and can scale down accordingly. Cheap, non-branded ones are usually OK but your mileage may vary.

ashyx said:
S2 must be different to the Tab S then as I've been using my chromecast charger and cable and a 700ma Samsung charger for the past 12 months no problem, admittedly usually when it's turned off.
I have no bones about using whatever charger I have to hand as long as it's 5v or thereabouts.
---------- Post added at 04:31 PM ---------- Previous post was at 04:26 PM ----------
You'd be hard pressed to find a charger that outputs it's exact specifications. The circuitry in modern devices can handle these slight differences as it's an expected tolerance.
Click to expand...
Click to collapse
Can you help me with some other doubt that I have? My version doesn't have IMEI, that's normal right? Only LTE has IMEI?

Tab S2 Can't Charge Fast Enough

I've a new 2016 tab s2 setup in a permanent setup in my car. I've the brightness turned all the way up and wifi and Bluetooth are enabled and in use. Waze and music is also always on. It seems with a 2.4A charger plugged in, it still cannot keep up with the power consumption, so battery is actually draining?
Does this sound right? Or do I have a charger issue?
Is there anything I can do to fix this?
Sent from my SM-G935F using Tapatalk

Anyone anyone?
Sent from my SM-G935F using Tapatalk

Other people are reporting slow charging too: http://forum.xda-developers.com/tab-s2/help/charging-slow-t3517644/page1
I've noticed it as well, and yep, if I'm using the tab while it's charging it can actually lose battery. Not sure if there's any solution.

I turned mine on from new, set up the wifi and such..
Then left it all alone to charge - 60% to 90% in about 2 hours, so a full charge from 0% will be about 7 hours.
It's definitely not designed for fast charge - maybe the slimline battery can't take it (Cue Scotty voice - "She cannae take it, Captain, she'll blow!!"

I use mine in a car, it charges, not fast but never drains. One time I took a crappy cable with me, still a thick looking cable but with that cable the device barely charged. I got to my destination and plugged the device into a wall charger but still with the crappy cable and it charged so slow... i really didnt believe that usb lead could affect charging until that day. check your cable and if it works fine then your car charger probably sucks. I have one that says 2.4 amps and it sucks - although it has 2 USB sockets only one has a higher rate. I swapped my cigarette lighter socket out for a dual USB 3.1A unit and the bottom socket in that easily charges it. Hope that helps
---------- Post added at 02:29 AM ---------- Previous post was at 02:26 AM ----------
Mine is a t710 btw

Thanks all. I will try some different car chargers and usb cables and report back.
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Portable Charger
You could also try a power inverter, which will allow you to plug in the wall charger that came with the tablet. Some of these car chargers are dog doo.
As per the comment on the Slimline battery, you may want to stay close (5% <>) to the original wall charger amps (2.0a).
The external charger I linked to above has a newer version, but the (linked to) charger has an option for 2.1 v, whereas the new one's minimum voltage output is 2.4.