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Anyone else having this issue? Went from completely dead 0% to now 17% in 2 hours! Maybe it's a bad battery? Used to charge from 0% to full battery in about an hour or less
Sent from my LG-P999 using XDA App
Yeah I have noticed that, it's iffy sometimes it charges normally on my pc then there times when it just crawls like today it was at 57 % for like 1 hour I rebooted it thinking something was wrong.
My phone was very hot tho maybe that had somthing to do with it idk
Sent from my LG-P999 using XDA App
never use your micro usb cable connected to your computer to charge your phone. If your phone is ON and playing music or something else, that will still run down the battery even though it is connected to the computer. Your LG G2x charger that came with your phone is rated at 1 amp. The computer usb port is giving out a fraction of that. Even cheap chargers from China that are 350mA - 500mA will take forever to charge your phone. I use spare Blackberry chargers that are less than $5 and offer 700mA. They are great and cheap.
http://www.amazon.com/BlackBerry-Fo...PN0S/ref=sr_1_1?ie=UTF8&qid=1309054355&sr=8-1
grenademasta said:
never use your micro usb cable connected to your computer to charge your phone. If your phone is ON and playing music or something else, that will still run down the battery even though it is connected to the computer. Your LG G2x charger that came with your phone is rated at 1 amp. The computer usb port is giving out a fraction of that. Even cheap chargers from China that are 350mA - 500mA will take forever to charge your phone. I use spare Blackberry chargers that are less than $5 and offer 700mA. They are great and cheap.
http://www.amazon.com/BlackBerry-Fo...PN0S/ref=sr_1_1?ie=UTF8&qid=1309054355&sr=8-1
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It's very similar to the TF101; it seems most Tegra devices use a charging cable more like USB 3.0 than 2.0, which pushes a lot more power and charges the device quickly but when plugged into a 2.0 port the charge slows to a crawl. USB 2.0 simply isn't designed to push the amount of power these newer devices require.
When I try this it will not charge my phone. I tried on several computers at home and work Pc's. It actually drains it.
I wonder why that happens???
Not a big deal.
No problem, I always have to take my charger everywhere I Goto be safe.
All computers using USB 2.0 or USB 2.0 add-on cards.
Sent from my LG-P999 using XDA Premium App
grenademasta said:
Your LG G2x charger that came with your phone is rated at 1 amp. The computer usb port is giving out a fraction of that.
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Click to collapse
Yes, a fraction of 0.5. USB ports can provide up to 500mA.
I just charged mine at work using a USB cable plugged into my monitor. I noticed that trying to charge it off my laptop doesn't seem to get me anywhere. It might require using a powered hub or something similar to get enough juice.
I usually slowly lose charge when plugged into the usb at work. Granted the screen is almost always on and the phone being used.
I've noticed the charge rate for differs depending on the usb charger rating.
For example, on my laptop usb, it charges very very slowly. but when plugged into my desktop, it charges just very slowly. So they must have different current ratings.
When using my eee transformer usb plug ([email protected]), it charges the phone very fast, like under 2hrs. When using a usb charger meant for a blueant headset ([email protected]), it takes like 4hrs to charge. Think the stock charger is at [email protected]
I use Battery monitor app to monitor my batt usage/drain. Haven't really paid attention to the battery gain, but from looking at past history graph, think when plugged into the laptop, it supplied like 5-15ma of juice. When plugged into destop it looks like at 55-400ma. The transformer usb provides up to 1200ish ma, and the stock gives 800ish ma.
Now does using different rating chargers affect the battery discharge rate and health of the battery?
Just because a USB port on a PC says it'll output 500ma doesn't mean it will, it's all up to the software. If your PC or phone is cranky and doesn't communicate properly, your computer's USB port will default to 100ma, and you can't charge off that
Mine charges fine on USB unless I'm trying to use it, then it is pretty much break even.
Hello,
I was wondering, can I use the old charging cables from an LG Optimus Black and Samsung Galaxy S2 to charge the Nexus 5?
I also have a car USB adapter and a spare USB-to-microUSB cable.
Can I use all sort of plugs/cables that match the connector size, or should I pay attention to any details regarding current/voltage?
I noticed the original PS for the Nexus 5 supplies more power than all others I have, but that may just mean that it would charge slower, which to me is not an issue.
I not only want to avoid doing any damage, but also of course shorten the battery life!!
Thanks
Gatz said:
Hello,
I was wondering, can I use the old charging cables from an LG Optimus Black and Samsung Galaxy S2 to charge the Nexus 5?
I also have a car USB adapter and a spare USB-to-microUSB cable.
Can I use all sort of plugs/cables that match the connector size, or should I pay attention to any details regarding current/voltage?
I noticed the original PS for the Nexus 5 supplies more power than all others I have, but that may just mean that it would charge slower, which to me is not an issue.
I not only want to avoid doing any damage, but also of course shorten the battery life!!
Thanks
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Click to collapse
Any Micro USB cable will work with the phone and you shouldn't have a problem with voltage or anything like that dont worry bro
I notice nexus 5 is very picky on your USB cable if u want a fast charge. So of notice it going pretty slow. Try another cable
Sent from my Nexus 5 using xda app-developers app
Any USB charger should be 5V. You could in theory get a cheap charger that is off by some amount, but even then it would have to be significantly higher (5.5V+) to cause damage.
Current just affects the charging speed. A 0.5A charger is just going to charge your phone slowly. Your phone won't draw more than 1.2A though, so a 2A charger would be fine.
I was wondering about the USB cable as well, if I recall correctly, didn't the Nexus 4 had one less pin in the micro usb cable and Google only recommended using their USB cables?
I have a tone of Samsung micro USB cables from my numerous E4GT that I went through. I also noticed that the N5 charger brick says 1.2 on it so it's not your standard 1 amp charging brick.
raptir said:
Any USB charger should be 5V. You could in theory get a cheap charger that is off by some amount, but even then it would have to be significantly higher (5.5V+) to cause damage.
Current just affects the charging speed. A 0.5A charger is just going to charge your phone slowly. Your phone won't draw more than 1.2A though, so a 2A charger would be fine.
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Unfortunately the N5 seems to report most chargers as USB Mode chargers rather than AC Mode. I've noticed this with my Battery Packs, multiple car chargers, as well as multiple home chargers that are cheap. The N4 reports them all as AC chargers, but the N5 reports them as USB Chargers
naturefreak85 said:
Unfortunately the N5 seems to report most chargers as USB Mode chargers rather than AC Mode. I've noticed this with my Battery Packs, multiple car chargers, as well as multiple home chargers that are cheap. The N4 reports them all as AC chargers, but the N5 reports them as USB Chargers
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Click to collapse
Silly question, but how do you tell the difference on your N5 from USB charge vs AC charge?
Not a silly question at all. Go into settings and check "Battery" when you get in there, It shows you xx% Charging ("Whatever you are charging through")
Raistlin1 said:
Silly question, but how do you tell the difference on your N5 from USB charge vs AC charge?
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Raistlin1 said:
Silly question, but how do you tell the difference on your N5 from USB charge vs AC charge?
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Click to collapse
Goto Settings -> About -> Status -> Battery Status: Charging (USB) / AC
I've not used the bundled charger, just re-using my old one that is an AC Adapter with a USB cable. I'll check tonight to see if it's charging in USB or AC after all.
As far as I know, if you plug in your Nexus5 (or any phone) into a power source with high amperage (>1A), your phone should utilize the amps it actually needs to charge at full speed (AC Charging).*
For example, if i plug my Nexus 5 into a 2.1A charger, it will charge just fine and draw only the required amps needed.*
Ive noticed my phone (rooted with faux) and my wifes (stock) and very finicky when it comes to the amps a charger uses. *It appears that if a charger is not exactly 1.0A or 1.2/1.3A, the phone charges as USB and not AC (no matter which USB cable I use). *Below is what I have found out, *with charge type/amp and how the phone sees it
Stock charger (1.2A) - AC
Anker 25W 5-Port Wall charger (1A Android port) - AC
Anker 25W 5-Port Wall charger (1A iPhone port) - USB (not sure why??)
Anker 25W 5-Port Wall charger (1.3A Galaxy Tab Port) - AC
Anker 25W 5-Port Wall charger (2.1A iPad ports) - USB
Anker E4 13000mah battery (2A) - USB
ANker E4 13000mah battery (1A) - AC
Anyone else experience this?
Sent from my Nexus 5 using Tapatalk
What you've observed here actually has nothing to do with the amperage of your ports and everything to do with how their data pins are wired. The N5 (and most other android devices) looks for the data +/- pins in the USB port to be shorted together, this is how it determines it's connected to a charger. Apple devices do this differently, they look for a specific combination of voltages to be present on the data +/- pins. When you connect your N5 to an Apple port, it ignores these voltages and just charges as if it were connected to a PC.
Now the fact that it sees the Galaxy Tab port as a charger is kind of interesting because the Tab uses yet another method for charger detection. It looks for resistors of a specific value connecting the data +/- pins to the power +/- pins. Cool that the N5 recognizes this configuration as well.
Anyway, this is why your Anker charger has ports dedicated to specific devices, each one is configured a little differently.
That would make sense, however, I would expect the same thing on my Nexus 4 but that doesn't happen. It charges as AC for every port
Sent from my Nexus 5 using Tapatalk
It could simply be that the N4 uses a different power control IC from the N5 (they almost certainly do). That and the software controlling the charging determine whether the phone enables AC charging from different ports or not.
I believe (I have not tried this) that some custom kernels have a setting that enables fast charging unconditionally, to draw as much current as the hardware allows.
Yeah I'm waiting for a kernel to support Fast charge, don't believe any do at the moment
Sent from my Nexus 5 using Tapatalk
the phone may revert to lower power usb charging if some condition isn't met... the phone is completely ignorant of the rated power of the wall wart. current is drawn, it depends on ohms.. so it has nothing to do with the "power output." what i mean is there is no situation where too many amps is going to trigger something in the phone, the phone controls the amps and is ignorant of the max the supply can give unless the phone actually exceeds that and detects a voltage drop, the supply can't force more amps without raising voltage to do so but that's just not how these devices work. so it's not because of the amps of the charger, it must be some other aspect.
what the phone can see is voltage. the state of the microusb "Id" pin (which will probably be open if you are using a data cable and not a specific dock to put it in desk mode or car mode, not that i think the n5 has those modes, but the Id pin is what tells the phone these things, as well as set them into download mode to flash them) and the state of the data pins. generally the data pins need to be shorted together to tell the phone to go into ac charging.
it's possible however that if the voltage is lower than 5v, the phone assumes there is voltage drop from too low a power rating on the supply and it's unable to supply the current. in this situation the phone may default to a lower current charging mode. some ac chargers may not go all the way to 5.0v they may put out as low as 4.45v... if the voltage is either low or unstable from the "high output" charger it may cause the phone to think it has exceeded the output rating of the supply when infact it's just getting unclean power. try it with an official tablet charger for a kindle or something and not a store bought anything..... some of the high output chargers just have substandard regulators and/or filtering.
there may also be more to this. usb 3.0 has a higher current rating than usb 2.0 if the phone can detect the type of port it's connected to, that may also determine the charge mode.. (in thoery anyway, no reason it can't work that way, but i can't say i know that it does on any current device)
It's getting pretty aggravating now that my Nexus 5 charges as USB when connected to my anker slim 2 1A external battery as well as my anker astro e4 1A port. No reason why it should do this
Sent from my Nexus 5 using Tapatalk
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
jalanjkcarp said:
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
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Oh thanks for that tip. I'll order one on Amazon right now and update this thread
Sent from my Nexus 5 using Tapatalk
What happens if you connect an Apple device to one with the shorted pins?
Earth explodes
Sent from my Nexus 5 using Tapatalk
jalanjkcarp said:
If you use a fast charging USB cable with the proper pins shorted you should get it to charge with in AC mode. I grabbed one from Amazon and it changed from DC to AC on the same charger.
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Click to collapse
Tested the new USB cord on all ports, charges as AC. Thanks a lot
Sent from my Nexus 5 using Tapatalk
When im using my nexus 5 in a car, or when powered form anything other than the official charger it takes for ever to charge.
If left overnight this isn't a problem, however when in a car charging from the lighter socket my nexus looses charge when streaming audio and using the gps.
The only thing ive noticed is that it appears to have three charge modes:
Wireless - charges reasonably fast
AC charges fast, but only appears on the standard charger with the standard lead
and USB when it charges slowly, or even looses charge.
any way to enable to AC mode when its connected to another ( ie third party ) charger?
it would depend where you plug in. via wall charger will be ac, via any other place itll be usb. and when usb, it will charge much slower than with a wall outlet(ac). that is normal and how its supposed to work. and if you are using a 3rd party charger, make sure it has the same voltage that the default charger has, or it will charge slower.
third party charger, mains output 5v dc, 2.1 amp, nexus charges slowly says it's usb. in car adaptor 1.5amp, 5 volt slow charge.
all checked with multimeter for output values etc.
2Pints said:
third party charger, mains output 5v dc, 2.1 amp, nexus charges slowly says it's usb. in car adaptor 1.5amp, 5 volt slow charge.
all checked with multimeter for output values etc.
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Maybe you are using a thin cable?
Yup, it'll be the cable
Sent from my Nexus 5 using Tapatalk
I agree that it's probably due to the cable.
One thing that I've noticed (especially with a couple of my LG devices that have fast charge and it's more noticeable) is that a thicker data sync cable works better than a standard charge only cable, which are usually thin.
You could also try a kernel that has USB fast charge.
Anyone attempt to use an iPad charger with the Tab S? I always travel with it and just pack a micro USB cable since it has high output. Just attempted to plug in my 10.5 to it and nothing. Luckily I was able to track down a different charger, and it worked fine with the same cable. This is the first device I've had that refused to charge using my iPad charger. What gives?
Mine won't charge that method either. (ipad air plug)
I think the Tab S is very picky, with some other chargers, i get the lightning indicator in the battery with a red cross on top, is this the same with you.
Yeah, mine's a little picky too. It won't charge off the Motorola micro usb chargers we have all over the place at work, but it will charge off just about any USB plug and cable I throw at it. Also charges off the USB ports in the plug strip in the living room.
litesout said:
Yeah, mine's a little picky too. It won't charge off the Motorola micro usb chargers we have all over the place at work, but it will charge off just about any USB plug and cable I throw at it. Also charges off the USB ports in the plug strip in the living room.
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Do you get the red cross on top of that battery indicator.
There is a standard for high current usb chargers (rather than pc usb ports) that is indicated by having the data lines shorted together, as far as I understand it the iPad charger uses a different system to indicate high charge ability. (I'm assuming) the Samsung charger has these pins shorted internally and uses a plain cable (which can also be used for pc data connection).
You can get the high charge rate from a standard charger by using a cable with the data lines sorted, either make your own or buy a ready made one (e.g. Portapow or their plug-in inline adapter). I'd guess that the same cable would also get full charge via the iPad charger, these cables though cannot be used to connect to pc for data.
Samsung dedicated chargers
Apple and Samsung both use their own unique standards for USB charging so their devices know when they are connected to a charger capable of supplying the higher current they prefer. They do this by using a resistor voltage devider inside the charger to apply a very specific voltage to the data leads of the USB cable.
A little Googling will find examples and descriptions of the Samsung design.
There is a little plug-in, intelligent, USB adapter available that will interface Apple and Samsung devices to any charger. It senses what device you have and supplies the correct voltages on the data leads so your device thinks it's plugged into its official cherger. I think I saw it on ebay.
Edit- here is the adapter to allow using any charger with Samsung or Apple devices.
http://www.ebay.com/itm/USB-Charging-Port-Controller-Fast-charging-adapter-identificatio-For-Phone-PAD-/141342316282?pt=US_Other_Cell_Phone_Accessories&hash=item20e8a896fa
Just keep in mind that this adapter will make your tablet believe it's connected to a charger that can supply high current. If the charger cannot supply high current, it will be overloaded and it's output voltage will sag.
I don't think this will damage the Samsung tablet, but it will slow down charging and may overheat the charger.
cheetokhan said:
Apple and Samsung both use their own unique standards for USB charging so their devices know when they are connected to a charger capable of supplying the higher current they prefer. They do this by using a resistor voltage devider inside the charger to apply a very specific voltage to the data leads of the USB cable.
A little Googling will find examples and descriptions of the Samsung design.
There is a little plug-in, intelligent, USB adapter available that will interface Apple and Samsung devices to any charger. It senses what device you have and supplies the correct voltages on the data leads so your device thinks it's plugged into its official cherger. I think I saw it on ebay.
Edit- here is the adapter to allow using any charger with Samsung or Apple devices.
http://www.ebay.com/itm/USB-Charging-Port-Controller-Fast-charging-adapter-identificatio-For-Phone-PAD-/141342316282?pt=US_Other_Cell_Phone_Accessories&hash=item20e8a896fa
Just keep in mind that this adapter will make your tablet believe it's connected to a charger that can supply high current. If the charger cannot supply high current, it will be overloaded and it's output voltage will sag.
I don't think this will damage the Samsung tablet, but it will slow down charging and may overheat the charger.
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Click to collapse
Maybe I'm a conspiracy theorist, but I was also unable to charge the tablet with my wife's macbook using the same cable that works fine with other wall chargers. I am pretty sure it worked fine when it was booted into bootcamp as well...
She's in Europe for a few months so I won't be able to confirm for a while.
mears said:
Maybe I'm a conspiracy theorist, but I was also unable to charge the tablet with my wife's macbook using the same cable that works fine with other wall chargers. I am pretty sure it worked fine when it was booted into bootcamp as well...
She's in Europe for a few months so I won't be able to confirm for a while.
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The only charger I've used with my Tab S 10.5 is this one- http://www.amazon.com/gp/product/B00DVH62J2/ref=oh_details_o08_s00_i01?ie=UTF8&psc=1
I haven't even tried the factory charger yet. I'll have to test it and see if the Tab S uses the same voltage sensing on the data leads as the previous Samsung tablets.
I've been using an Ipad 10w charger,fat,square,.twice the weight of the OEM Samsung charger ,removable prongs.
It WORKS WELL. Where my Samsung OEM charger has trouble charging
when the tablet is in use, the fat Apple charger kept charging at a good speed.
A bit warm as compared to OEM Samsung charger but not "Hot".
Probably 20% + faster charging as its very noticeable (except 99 to 100 % takes a while, charging rate software?)
I'm using an original Apple charger at work to charge my 8.4. I don't know if the charger is for an iPhone or iPad. Someone left it at work. I gave away the lightning cable that came with it since I don't own an Apple product. The cable I'm using is part of an LG qi charger (doesn't come with a wall adapter/charger).