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So i just sold my old blackberry curve and along with it the wall charger i used for my MT4g
so i looked around my house for another corded wall charger as the plug-usb cable combo just doesnt work for me as the cord is way too short for my needs
well i found an older Moto wall charge PN# SPN5334A...it has the same basic specs are the mytouch plug part with the Input: 100-240~200mA 50-60Hz...but the output is 5v 550mA instead of the mytouch plug being 5v 1A
so the question is...will the different of almost a half an amp cause any serious issues other than maybe a slower charge? any potential for damage to the battery or phone or even the charger?
well any help would be great...thanks
No it wont hurt the phone, only way to damage it is to over amp, as in say it was 2.5 amps but however it will slow the charge down I recommened going to a a store that sells computer stuff and picking up a usb extension cord I got a 3 foot on mine and dont see any draw backs as I do with a under amped charger
f1vel66a said:
No it wont hurt the phone, only way to damage it is to over amp, as in say it was 2.5 amps but however it will slow the charge down I recommened going to a a store that sells computer stuff and picking up a usb extension cord I got a 3 foot on mine and dont see any draw backs as I do with a under amped charger
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Click to collapse
yeah i never really considered extending the usb cable...i actually have a 6 ft extension cable sitting in my drawer
but i appreciate the info
No problem hope it helped
Sent from my HTC Glacier using XDA App
f1vel66a said:
No it wont hurt the phone, only way to damage it is to over amp, as in say it was 2.5 amps but however it will slow the charge down I recommened going to a a store that sells computer stuff and picking up a usb extension cord I got a 3 foot on mine and dont see any draw backs as I do with a under amped charger
Click to expand...
Click to collapse
What's over amp? If the voltage is correct, the higher the amperage the more efficient it(charger) is, as the phone will draw as much as it needs to charge, in this case around 1amp according the factory charger.
Matching voltage is the important part. Too low of amperage will result in slower charge or no charge when using and plugged in at the same time.
[via XDA premium]
sleepyfu said:
What's over amp? If the voltage is correct, the higher the amperage the more efficient it(charger) is, as the phone will draw as much as it needs to charge, in this case around 1amp according the factory charger.
Matching voltage is the important part. Too low of amperage will result in slower charge or no charge when using and plugged in at the same time.
[via XDA premium]
Click to expand...
Click to collapse
All voltage is the force pushing the amps through. Amps is the actual energy. Resistance is a factor too. Check the Watts to see that they match. But don't over amp it as well
Sent from my HTC Glacier using XDA Premium App
I meant there is no such thing as over amp. Amprage rating is for how stout the power supply is. A 5v/2amp supply can charge 2 of these phone with out issues. 500mA will charge but slow. Think of car batteries they are all 12v and the "long lasting" or "performance " ones will have better amp ratings.
Wattage is simply volt x amp, in this case here, volt is the constant.
[via XDA premium]
sleepyfu said:
I meant there is no such thing as over amp. Amprage rating is for how stout the power supply is. A 5v/2amp supply can charge 2 of these phone with out issues. 500mA will charge but slow. Think of car batteries they are all 12v and the "long lasting" or "performance " ones will have better amp ratings.
Wattage is simply volt x amp, in this case here, volt is the constant.
[via XDA premium]
Click to expand...
Click to collapse
If by over amp, you mean over charge? Too much amperage causes a lot of problems, just like too much voltage can cause a lot of priblems
Sent from my HTC Glacier using XDA Premium App
sleepyfu said:
I meant there is no such thing as over amp. Amprage rating is for how stout the power supply is. A 5v/2amp supply can charge 2 of these phone with out issues. 500mA will charge but slow. Think of car batteries they are all 12v and the "long lasting" or "performance " ones will have better amp ratings.
Wattage is simply volt x amp, in this case here, volt is the constant.
[via XDA premium]
Click to expand...
Click to collapse
I've seen phone batterys blow from to much amps... You can go + .5 amps max on a cell phone before things start to go wrong. And that isnt recommended for to long unless you want battery issues
Sent from my HTC Glacier
So did it happen with a 5volt output charger or something higher? I have seen 8v mini usb charger from Motorola around, that will blow out your HTC battery.
Also can happen if there is a problem with the phones charging circuit, not from a 5v charger with a high amperage rating. Now with a higher amp rating, and your phone has issues, the more amps is available, the bigger "battery blow" you can achieve.
Do I recommend more than 5v/1amp? not really, but can you use a 5v/2amp charger or a 5v/4amp charger if it exists? Yes. Is 1amp safer? kinda.
How do I know this? it was an amperage question I answered wrong at my every 1st job interview 11 years ago.
These guys put it in better words than I do.
sivankls said:
DOESN'T MATTER ..if u know the basic Ohms Law..its the max capacity of the charger.(or any source) the current regulating circuits will take care of the real charging current fed to the battery
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tkteun said:
I charge my phone on my computers USB connection all the time, all computers have a maximum of 500mA USB current.
Amps are pulled from the charger, not pushed to the phone.
Voltages are pushed to the phone, not pulled from the charger.
If the phone draws too much current from the charger, the voltage drops to a point where the maximum power (P (Watt) = U (Voltage) * I (Amps)) of the charger isn't exceeded.
According to the USB specification you need at least 200mA with 500mA recommended +5VDC.
More is never a problem, you could even use a 50A power supply without breaking your phone. Practically spoken: I wouldn't do that.
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Click to collapse
I've tried to find the maximum current that the nexus will draw, without any luck.
some people have said that the galaxy s 2 draws a max of 1A because the phone itself says 1A, but thats wrong, as it says 1A on 3.7v, clearly talking about the input the phone draws from the battery... not the charging circuit... other people say the galaxy s2 limits current to 650mA for heat/safety reasons... I have no reason to believe or disbelieve this.
Getting back to my question, what's the max current that the charging circuit will take, I know the AC/DC adapter that came with my gsm gnexus is 1A/5V, but that may be more than enough, or not as much as the nexus could handle.
I ask because there are many 5v ac/dc converters that output more than 1A, some over 2A... would the nexus charge faster with this much current, and would it be good/bad for the battery?
this could be easily tested if someone has access to an EE LAB, giving the phone 5v, and seeing how much current it takes... would need a DC volt supply capable of >10W (5v/2A).
8steve8 said:
I've tried to find the maximum current that the nexus will draw, without any luck.
some people have said that the galaxy s 2 draws a max of 1A because the phone itself says 1A, but thats wrong, as it says 1A on 3.7v, clearly talking about the input the phone draws from the battery... not the charging circuit... other people say the galaxy s2 limits current to 650mA for heat/safety reasons... I have no reason to believe or disbelieve this.
Getting back to my question, what's the max current that the charging circuit will take, I know the AC/DC adapter that came with my gsm gnexus is 1A/5V, but that may be more than enough, or not as much as the nexus could handle.
I ask because there are many 5v ac/dc converters that output more than 1A, some over 2A... would the nexus charge faster with this much current, and would it be good/bad for the battery?
this could be easily tested if someone has access to an EE LAB, giving the phone 5v, and seeing how much current it takes... would need a DC volt supply capable of >10W (5v/2A).
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I dont know the answer to your question but my nexus eats amperage like it is going out of style. I can charge from almost empty to full in about 90 minutes.
Sent from my Galaxy Nexus using xda premium
@rbiter said:
I dont know the answer to your question but my nexus eats amperage like it is going out of style. I can charge from almost empty to full in about 90 minutes.
Sent from my Galaxy Nexus using xda premium
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Given the battery is 1850 mAh you are drawing a minimum of 1.85Ah/1.5h = 1.233 amps. Since your battery wasn't completely dead, you are drawing slighlty more.
But was the limit the Galaxy Nexus, or the charger? Also, if one were to use navigation or other power hog while in the car, the current draw should be greater without only some of that going to charge the battery.
[email protected] said:
Given the battery is 1850 mAh you are drawing a minimum of 1.85Ah/1.5h = 1.233 amps. Since your battery wasn't completely dead, you are drawing slighlty more.
But was the limit the Galaxy Nexus, or the charger? Also, if one were to use navigation or other power hog while in the car, the current draw should be greater without only some of that going to charge the battery.
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Click to collapse
if he has the GSM galaxy nexus, the battery is 1750 mah, and assuming his device was off or idle during this time, then the current you calculate is not a minimum, it's a maximum... if the battery was half full to start, then 90 minutes were spent charging half of the capacity, so the current was actually half of the amount you calculated.
to answer this question someone needs a nearly empty battery in a galaxy nexus, with the device off (just to be sure we are only measuring charging current, although most likely it is circuit limited, and not battery limited, so it probably wouldn't matter)...
Then they should try charging it with a 5V DC power source with unlimited current, with a way to monitor the current.
most charging circuits for these type of batteries are current limited, then voltage limited, so the battery must be close to empty so we are sure we are monitoring max current... the latter part of the charge is voltage limited and in the end is very small amounts of current.
I am getting a new usb 2.0 hub soon. I didnt know there was a bc 1.1 compliant device standard, aka battery charging 1.1, that allows charging at 1.5amps. But i think this applies to powered hubs, since usb 2.0 technically only allows 500ma, and of course charging from a computer will only allow 500ma. Samsung recent smartphones allow this type of charging, so im sure nexus can utilize it. And yes, sgs2 was limited to 650mah charging for some reason. I never followed up on if devs overcame the limitation. The sgs2 crowd turned me off from the device because of their elitist attitudes.
Crazy world, ay?
@rbiter said:
I am getting a new usb 2.0 hub soon. I didnt know there was a bc 1.1 compliant device standard, aka battery charging 1.1, that allows charging at 1.5amps. But i think this applies to powered hubs, since usb 2.0 technically only allows 500ma, and of course charging from a computer will only allow 500ma. Samsung recent smartphones allow this type of charging, so im sure nexus can utilize it. And yes, sgs2 was limited to 650mah charging for some reason. I never followed up on if devs overcame the limitation. The sgs2 crowd turned me off from the device because of their elitist attitudes.
Crazy world, ay?
Click to expand...
Click to collapse
yeah I'm trying to buy the best ac adaptor for my nexus, but finding info is difficult.. the one that came with my nexus is for europe, and is 5v/1A, but it may not be the optimal current. The market seems to have many adapters capable of 0.5A, 750mA, 850mA, 1A, and 2.1A (marketed for ipad)...
will the nexus benefit from a 2.1A ac/adapter even if it doesn't 'need' it?
The Nexus charger is rated at 1 amp. I'm using my Captivate charger at work, which is rated at .7 amps. I'm thinking just because the Nexus charger is rated at 1 amp, that doesn't meant the Nexus is actually drawing that much power. Anyway, the Captivate charger I have seems to work fine.
Any issues here?
8steve8 said:
yeah I'm trying to buy the best ac adaptor for my nexus, but finding info is difficult.. the one that came with my nexus is for europe, and is 5v/1A, but it may not be the optimal current. The market seems to have many adapters capable of 0.5A, 750mA, 850mA, 1A, and 2.1A (marketed for ipad)...
will the nexus benefit from a 2.1A ac/adapter even if it doesn't 'need' it?
Click to expand...
Click to collapse
Just get a 1amp charger. It is plenty, on the safe side and fast fast fast for the nexus. With a 1a Motorola charger I have it charges 1% a minute when I am not using phone. I got that powered hub yesterday. Charging the nexus off of it was about 1.5% a minute and I didn't see battery go above 33 degrees Celsius.
Sent from my Galaxy Nexus using xda premium
let me clarify that im not worried about what will "work" im looking for what's the ideal charger...
yes 0.7A will charge it, so will 1A, but the actual max current draw is still what I'm asking.
http://www.reddit.com/r/GalaxyNexus/comments/nvgt4/chargers_3000ma_worth_the_risk/c3cb636
http://www.reddit.com/r/Android/comments/nystt/galaxy_nexus_power_analysis_why_chargers_cant/
I measured the charging current at just less than 0.5A with the phone on and off. I too was thinking that a higher capacity charger would speed charging.
1 amp chargers are more than adequate. I did this check with the battery at 80%.
طوني تبولة said:
http://www.reddit.com/r/GalaxyNexus/comments/nvgt4/chargers_3000ma_worth_the_risk/c3cb636
http://www.reddit.com/r/Android/comments/nystt/galaxy_nexus_power_analysis_why_chargers_cant/
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Click to collapse
Thanks for these threads. I was curious, too, if it does any good or harm to my GN if I plug it into the 2.1A plug of my power bank.
not that i care if i break too but if there some way where i can use my 2.1 amp wall charger to fast charge my phone and use 2.1 amps rather than 1 a
I just got my S2 5 days ago. All this time I been wondering why it takes around 5 hours to charge from 20% to 100%. At first, I been using my G2X charger, it was rated at the same 5V 1A output so I thought it wouldn't matter. Then I used the included Samsung charger with same LG cable, no difference. Now when using the Samsung cable, it only takes about 2 hours to charge from around 15% to 100%.
Is this just coincidence? Is my phone too new and just needed a few cycles? I'll test again tomorrow, or when my phone reaches below 20% with the LG cable.
There's been known issues with using chargers other than stock..mine gets stuck at 100% until I reboot if I use any charger other than the OEM that came with it.
Sent from my SGH-T989 using XDA
the OEM cable
it'll be your life line in case of emergency like this one
http://forum.xda-developers.com/showthread.php?t=1561432
From my experience you're going to always want to use the charger and cord that came with the phone. I bought my Galaxy S II off the streets and it did not come with the cord, so originally I tried using my OG Droid charger since it's micro USB too but it wouldn't even accept it at all (I'm pretty sure because it was too under-powered for the Galaxy S II (My speculation)). I tried using an older LG micro USB cable too (I think it was even older though) it didn't work either, so now I use my Vizio TAB micro USB cord which seems to work fine.
But also at my work we have a 3rd party micro usb charger too but it's universal, but if I charge my phone on there, not only does it take longer to charge it doesn't hold the battery as long.
So what I've figured out is you're gonna want to use your own charger the phone came with to achieve maximum battery life, also unplug the charger right away when it hits 100%.
shilent said:
I just got my S2 5 days ago. All this time I been wondering why it takes around 5 hours to charge from 20% to 100%. At first, I been using my G2X charger, it was rated at the same 5V 1A output so I thought it wouldn't matter. Then I used the included Samsung charger with same LG cable, no difference. Now when using the Samsung cable, it only takes about 2 hours to charge from around 15% to 100%.
Is this just coincidence? Is my phone too new and just needed a few cycles? I'll test again tomorrow, or when my phone reaches below 20% with the LG cable.
Click to expand...
Click to collapse
Wow lol I post the same thing every second day on some forum or other xD
The usb is special in the sense it has a nice rubber feel and cool plastic iphone style caps on the end..
Its a MICRO-USB male to USB male cable, nothing more, seeing as it is still a standard USB cable it has a max current of 5v (5.25 I do believe..), plugging it into a USB to AC converter over 5v can screw up the device and cable, sscond point.
Standard charger is 5v AC, using a charger below wont cause harm, but using one above can screw up your phone and battery and not ground it properly..
3rd point, keep in mind the mAh on the charger when charging, some (for like bluetooth headsets) are only 500mAh)
mAh is an acronym for ampere an hour, and in short, for chargers measures the current sent to the device at an hourly rate, for batterys (such as lithium ion) measures the actual charge capacity of the cell, using one with a higher mAh then the stock battery (1850mAh) will only charge it quicker and is recommended.
Fourth and final, remember with USB to AC adapters that some only have +5 and ground enabled (2 outer pins), ising the device its meant for on a ac adapter with all 4 pins enabled will make the device try to establish a connection and can again, make it not ground properly. I think ours has the 4 pins enabled though so ignore the last point..
*edit
Lmfao at above few posts (your theories have no basis, allow me to explain)
When you plug your charger in, regardless if its connected or not, its "live"
That being said, the every cellphone (keyword: cell) uses a lithium-ion battery,
That cell has a control board with a chip with a bit of information, some variable, the device has READ access to this board, and collects informagion such as max mAh, current mAh, and min mAh, the device then calculates from that, a percentage,
It then displays that information to the user, the minimum (displays 0-1%), is usually a value around ~100mAh if the cell dies to 0mAh, this can reset the control board and drasticly reduce the batterys expectancy and overall life.
Also, the actual chip on the phone, is simply for, when the battery is full, (current mAh meets max)
Said device drops connection to the cell and resumes on AC, leaving battery fully charged.
Unless you use a charger outside above said specifications, its literally impossible for a charger or file on said device (referring to batterystats n00bs who dont research) to adjust or recalibrate a lithium ion battery.
Hows that for a response I kept it clean
doug36 said:
Wow lol I post the same thing every second day on some forum or other xD
The usb is special in the sense it has a nice rubber feel and cool plastic iphone style caps on the end..
Its a MICRO-USB male to USB male cable, nothing more, seeing as it is still a standard USB cable it has a max current of 5v (5.25 I do believe..), plugging it into a USB to AC converter over 5v can screw up the device and cable, sscond point.
Standard charger is 5v AC, using a charger below wont cause harm, but using one above can screw up your phone and battery and not ground it properly..
3rd point, keep in mind the mAh on the charger when charging, some (for like bluetooth headsets) are only 500mAh)
mAh is an acronym for ampere an hour, and in short, for chargers measures the current sent to the device at an hourly rate, for batterys (such as lithium ion) measures the actual charge capacity of the cell, using one with a higher mAh then the stock battery (1850mAh) will only charge it quicker and is recommended.
Fourth and final, remember with USB to AC adapters that some only have +5 and ground enabled (2 outer pins), ising the device its meant for on a ac adapter with all 4 pins enabled will make the device try to establish a connection and can again, make it not ground properly. I think ours has the 4 pins enabled though so ignore the last point..
*edit
Lmfao at above few posts (your theories have no basis, allow me to explain)
When you plug your charger in, regardless if its connected or not, its "live"
That being said, the every cellphone (keyword: cell) uses a lithium-ion battery,
That cell has a control board with a chip with a bit of information, some variable, the device has READ access to this board, and collects informagion such as max mAh, current mAh, and min mAh, the device then calculates from that, a percentage,
It then displays that information to the user, the minimum (displays 0-1%), is usually a value around ~100mAh if the cell dies to 0mAh, this can reset the control board and drasticly reduce the batterys expectancy and overall life.
Also, the actual chip on the phone, is simply for, when the battery is full, (current mAh meets max)
Said device drops connection to the cell and resumes on AC, leaving battery fully charged.
Unless you use a charger outside above said specifications, its literally impossible for a charger or file on said device (referring to batterystats n00bs who dont research) to adjust or recalibrate a lithium ion battery.
Hows that for a response I kept it clean
Click to expand...
Click to collapse
That's exactly my point. Shouldn't all micro USB cables be the same? I been charging all my other smartphones with many different micro USB cables and they all charged normally. Now with this phone, it takes over 5 hours to charge with my LG branded cable, this is with the stock S2 charger. Now with the Stock S2 cable, it charges in about 2 hours.
I'm gonna have to test again with the LG cable, as others reported long charging times within the first few days.
BTW, the current rating on a charger is NOT the hourly rate (ah). Also charging a lithium ion battery at a rate of 1850mah or higher should not be recommended.
Sent from my SGH-T989 using XDA
shilent said:
That's exactly my point. Shouldn't all micro USB cables be the same? I been charging all my other smartphones with many different micro USB cables and they all charged normally. Now with this phone, it takes over 5 hours to charge with my LG branded cable, this is with the stock S2 charger. Now with the Stock S2 cable, it charges in about 2 hours.
I'm gonna have to test again with the LG cable, as others reported long charging times within the first few days.
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
Its never gonna be a linear charge or drain.
Simply put its an OS, As all OS's they have services that can start at different points, and also open different apps, also using rhe device, applications still in the ram, connection strength will all effect this its impossible to check 2 differenf charge methods accurately enough to get a definitive answer without 2 identical systems, apps, data, kernal and all, one on top of the other, plugged in simultaneously, in sleep mode, to the same outlet :/
Haha well I may be in trouble. I use several different friends, co workers chargers everyday.
Sent from my SGH-T989 using xda premium
JaZart said:
Haha well I may be in trouble. I use several different friends, co workers chargers everyday.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
I have 3 chargers I use for this and haven't had no issues, there is no way using a different charger (unless its outside above said specifications) that it can do anything to your device including screw with the charge level.. people just don't like to research.
Just an update, it took 2 hours and 25 minutes to charge my S2 from 25% to 75% using my LG cable (same stock S2 charger). I'm gonna test with my Palm micro USB cable next.
shilent said:
Just an update, it took 2 hours and 25 minutes to charge my S2 from 25% to 75% using my LG cable (same stock S2 charger). I'm gonna test with my Palm micro USB cable next.
Click to expand...
Click to collapse
One, if you want an accurate trst with one device, kill to zero percent and plug it in, eithout turning on time to 100%, run same test eith another cable
**EDIT
shilent said:
BTW, the current rating on a charger is NOT the hourly rate (ah). Also charging a lithium ion battery at a rate of 1850mah or higher should not be recommended.
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
http://en.m.wikipedia.org/wiki/Ampere-hour
Link for you to check your **** before correcting people
Using one equal to or higher then battery capacity IS recommended..
To save you the trouble of reading **** WAY over your head:
The Faraday constant is the charge on one mole of electrons;
approximately equal to 26.8 ampere-hours. It is used in
electrochemical calculations.
An ampere-hour is not a unit of energy. In a battery system, for
example, accurate calculation of the energy delivered requires
integration of the power delivered (product of instantaneous
voltage and instantaneous current) over the discharge interval.
Generally, the battery voltage varies during discharge; an average
value may be used to approximate the integration of power. [3]
In summary, the higher the mAh, the longer the battery will last.
One, if you want an accurate trst with one device, kill to zero percent and plug it in, eithout turning on time to 100%, run same test eith another cable
**EDIT
http://en.m.wikipedia.org/wiki/Ampere-hour
Link for you to check your **** before correcting people
Using one equal to or higher then battery capacity IS recommended..
To save you the trouble of reading **** WAY over your head:
The Faraday constant is the charge on one mole electrons;
approximately equal to 26.8 ampere-hours. It is used in
electrochemical calculations
An ampere-hour is not a unit of energy. In a battery system, for
example, accurate calculation of the energy delivered requires
integration of the power delivered (product of instantaneous
voltage and instantaneous current) over the discharge interval.
Generally, the battery voltage varies during discharge; an average
value may be used to approximate the integration of power. [3]
In summary, the higher the mAh, the longer the battery will last.
For chargers, the higher mAh sends a larger current of the same voltage to the device, charging it faster, lower mAh can and will cjarge slowly.. I'm not sayin go use a 5v 50k mAh charger for the battery and charge it in a split second here.
Wtc! I hit edit! Mod plz merge these...
Charge rate of 1C = the capacity of the battery, in our case, 1C = 1850mah. It is not recommended to charge over 0.7C when it comes to lithium ion batteries. If a charge rate of 1850ma is recommended, then why do all chargers top out at 1A?
I collect high performance flashlights, most of them use lithium ion cells. I know about charging and discharging li-ion otherwise I could lose my hands.
Anyway, the point of this thread was about the stock USB cable vs other cables. The only thing I can think of at the moment is that my LG cable has more resistance than the Samsung cable, which is why it charges slower. Though that's hard to believe is the charging time is more than double.
doug36: I've seen you post in other threads, all you like to do is insult people, or at least try to. This is the last time I'm gonna post in this thread, you keep posting irrelevant information. Next, you're going to try to insult me, I'm not going to respond, and you're going to think you won or whatever, I don't care.
If anyone wants more info, or has any questions, please send me a PM.
JaZart said:
Haha well I may be in trouble. I use several different friends, co workers chargers everyday.
Sent from my SGH-T989 using xda premium
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Click to collapse
Eww... everyone hits and quits it? XD
I've noticed that the charger that comes with the S2 has a special hook on one side and looks distinctly different than other usb micro cables.
Personally i think it's really dumb.. wasn't the point of micro Usb to be uniform across all phones?!
Sounds like a good way for Samsung to make some extra bucks.
JhonKa said:
I've noticed that the charger that comes with the S2 has a special hook on one side and looks distinctly different than other usb micro cables.
Personally i think it's really dumb.. wasn't the point of micro Usb to be uniform across all phones?!
Sounds like a good way for Samsung to make some extra bucks.
Click to expand...
Click to collapse
I was curious about this two. What makes the included charger official...the brick or the cable out both
Sent from my SGH-T989 using xda premium
I have no idea, all I know is that i tried to use my charger for my G2X and the SGSII wouldn't go past 95% charged? I used the Samsung charger and it charges perfectly?
Well lately my stock samsung charger has been terrible.
Even when I plug it into the wall it charges so slowly that if im below 15%; it will die
When left alone or charging while off for about 45min it will have up about 2-5%; so there's a major problem here.
But using a different charger and it charges at a faster(normal pace); 5% to 65% in appox 1 hour.
JaZart said:
Well lately my stock samsung charger has been terrible.
Even when I plug it into the wall it charges so slowly that if im below 15%; it will die
When left alone or charging while off for about 45min it will have up about 2-5%; so there's a major problem here.
But using a different charger and it charges at a faster(normal pace); 5% to 65% in appox 1 hour.
Click to expand...
Click to collapse
That's normal? :O mine takes about 4 hours from red battery.
Sent from my SGH-T989 using xda premium
Has anyone noticed that if you turn the phone off..or let the battery die to 0% and then turn itself off. If you then plug it into an LG usb cable it will put the phone into download mode.
This works every single time with my g2x cable.
Sent from my SGH-T989 using Tapatalk
I haven't seen anybody mention this yet here on the forum, so I went ahead and bought one and tried it myself.
http://www.amazon.co.uk/dp/B0047AALS0/ref=asc_df_B0047AALS09152658?smid=A1AUCPBF2P18HS&tag=googlecouk06-21&linkCode=asn&creative=22218&creativeASIN=B0047AALS0
This is a USB Y cable. Two USB type A plugs to increase charge capacity from 500mA to 1A.
I use Siyah kernel with STweaks to change USB charge capacity from 500mA to 900mA, I am currently looking for a way to increase this to the full 1A.
Only £3.99 from Amazon. Tested using CurrentWidget. Charging now at 900mA.
danieljamie said:
I haven't seen anybody mention this yet here on the forum, so I went ahead and bought one and tried it myself.
http://www.amazon.co.uk/dp/B0047AAL...de=asn&creative=22218&creativeASIN=B0047AALS0
This is a USB Y cable. Two USB type A plugs to increase charge capacity from 500mA to 1A.
I use Siyah kernel with STweaks to change USB charge capacity from 500mA to 900mA, I am currently looking for a way to increase this to the full 1A.
Only £3.99 from Amazon. Tested using CurrentWidget. Charging now at 900mA.
Click to expand...
Click to collapse
Can't you just buy a 1mA output charger. I have chargers that will fully charger my phone in about 1hr and 30min.
Sent from my SPH-L710 using xda premium
smark72 said:
Can't you just buy a 1mA output charger. I have chargers that will fully charger my phone in about 1hr and 30min.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
It's designed for PC's and Laptops which only output 500mA on their USB ports.
Would work really well with the KiDiGi Cover-mate Dual Desktop Cradle, too bad it is a tad to expensive seeing that it is just a cable
Hey i have this cable which came with my 2.5 HDD external case. In some places i need to connect both cables to power the HDD so you think it will work same with S3? Also will it not damage it?
Exactly what I was looking for
danieljamie said:
I haven't seen anybody mention this yet here on the forum, so I went ahead and bought one and tried it myself.
This is a USB Y cable. Two USB type A plugs to increase charge capacity from 500mA to 1A.
I use Siyah kernel with STweaks to change USB charge capacity from 500mA to 900mA, I am currently looking for a way to increase this to the full 1A.
Only £3.99 from Amazon. Tested using CurrentWidget. Charging now at 900mA.
Click to expand...
Click to collapse
this was exactly what I was looking for.. Thanks a lot.. I also has Siyah kernel, and many USB 2 ports available at work, and like to keep my AC charger at home.
This cable won't give you 1A. I guess the second USB plug has no data connection (how could it? ) and without a registered USB device a USB port gives only a few mA of power.
It does work with 2.5" harddrives that need more power than one USB port can deliver. Why shouldn't it work with the s3?
But why would you need that when you are charging your phone at work? It's not like you're in a hurry. It can sit there all day.
And I wouldn't try to charge it with 1A or more just to save a little time. The charger you get with the s3 an the s3 itself are made for 900mA. That's why the kernel is limited to 900mA aswell. You might damage your phone by charging it with a higher current. Sure, there is a safety margin build in but going to the limit seldom is a good idea.
weisselstone said:
This cable won't give you 1A. I guess the second USB plug has no data connection (how could it? ) and without a registered USB device a USB port gives only a few mA of power.
Click to expand...
Click to collapse
This was correctly answered back in August (above). What does data have anything to do with current? It simply has 2 plugs so that it can draw more current (mA).
shamez23 said:
It does work with 2.5" harddrives that need more power than one USB port can deliver. Why shouldn't it work with the s3?
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Click to collapse
This.
shamez23 said:
But why would you need that when you are charging your phone at work? It's not like you're in a hurry. It can sit there all day.
And I wouldn't try to charge it with 1A or more just to save a little time. The charger you get with the s3 an the s3 itself are made for 900mA. That's why the kernel is limited to 900mA aswell. You might damage your phone by charging it with a higher current. Sure, there is a safety margin build in but going to the limit seldom is a good idea.
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Click to collapse
No, you can't damage it that way. Electronic devices DRAW current, which means that they only take as much as they are able to. You can plug your phone into a 5A charger and it wouldn't damage it. Too much voltage WILL fry it though.
Are you sure about that?
I've read more than once on tech sites that for example the 2A charger of the iPad will charge other devices that come with weaker chargers faster but that they advice against doing that on a regular basis.
I do use industrial Li-ion batteries (18650) on several other devices and the charger I use for those has a switch with witch I can decide if I want to charge them at 500mA or at 1000mA. Reading in forums that specialize on devices that use those batteries and that have users that seem to know quite a bit about batteries and do extensive testing with sophisticated equipment, the general opinion is, that using lower Amps will prolong the lifetime of your batteries and that too high currents can potentially damage them as of course will overcharging them.
http://batteryuniversity.com/learn/article/ultra_fast_chargers
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
I don't know much about battery technology so I might be wrong. I always had problems to wrap my head around anything that has to do with electricity and electronics in general and have to use analogies to understand and explain how things work in that area. Those analogies don't always apply completely.
The one I have in this case is the following:
I decide how much I can eat. I can eat at a normal pace until I'm full but I can also stuff myself and eat a lot more than I would normally do in a short period of time. I know that the later is a bad idea and won't do me much good but it is possible.
If you are correct with what you said, batteries could draw a higher current than what the original charger is delivering, up to their limit but that could still be too much and harm them.
I don't know. Now I'm confused.
shamez23 said:
Are you sure about that?
Click to expand...
Click to collapse
You have a point. I guess it depends on how well the charging circuitry (in the phone) is designed.
The battery itself won't limit the voltage/current (*). It's the charging circuitry that does this. For instance, if you connect the battery directly to a power supply and give it too much juice, it WILL damage the battery. Similarly, if the charging circuitry supplies too much to the battery, then this could also happen. However, it SHOULD be designed with appropriate tolerances and safety margins in mind. Therefore, it depends on how much you trust the hardware.
In that way, I guess charging at 500 mA would be considered safer. That being said, I'm happy plugging my phone into the wall charger every night, whether it's 900 mA or 1A.
(*) I know that Lithium batteries usually have built-in circuitry for safety measures, so they MIGHT have something that limits voltage/current, but I'm not sure.
900mA should be save. After all that's what Samsung gave us.
It's just that some people tweak their kernels to 1.25mA or even more. That's quite a bit higher than the specs and probably close to the safety margin.
It won't even charge your batterie faster that way. At least not when you talk about fully charging it. It will get faster to about 80% charge but after that it will take just so much longer to get to 100% that in the end it takes the same amount of time.
I'll stick to the original Samsung charger or the charger of my old HD2 that I have lying around. Makes me feel safer.
I got an original Samsung charger, looks just like the original charger I have for the SGS3 (same shape, cable & everything).
only difference is the output on it is 2.0A, while the output for my charger is 1.0A.
will it make a difference if i use this charger for my SGS3? just in case it can blowup the phone or something
666pluto said:
I got an original Samsung charger, looks just like the original charger I have for the SGS3 (same shape, cable & everything).
only difference is the output on it is 2.0A, while the output for my charger is 1.0A.
will it make a difference if i use this charger for my SGS3? just in case it can blowup the phone or something
Click to expand...
Click to collapse
No problem if the output is Always 5V.
2.0A only means the max power the Charger can send out. If the phone request max 1.0A, then the charger give it 1.0A. No difference in charging time, no difference at all.:good:
666pluto said:
I got an original Samsung charger, looks just like the original charger I have for the SGS3 (same shape, cable & everything).
only difference is the output on it is 2.0A, while the output for my charger is 1.0A.
will it make a difference if i use this charger for my SGS3? just in case it can blowup the phone or something
Click to expand...
Click to collapse
Well my fellow Israeli, I'm using 2.0A and it's been great so far.
Bought it in a "private store" and they gave me a 0.7 A charger. So after moving from 0.7A to 2.0A it did made a noticeable difference.
By the way, the 1.0A limit can be changed with a custom Kernel. Such as*Boeffla Kernel.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Better than the stock S3 charger. I'm using 2.1A charger. Charges up my S3 so fast. It charges 65% in 20 mins
QIQgame said:
Well my fellow Israeli, I'm using 2.0A and it's been great so far.
Bought it in a "private store" and they gave me a 0.7 A charger. So after moving from 0.7A to 2.0A it did made a noticeable difference.
By the way, the 1.0A limit can be changed with a custom Kernel. Such as*Boeffla Kernel.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
about the limit change, is it safe to play with such an option? didn't they place this limit for a reason?
but out of interest, how much faster can you make it charge if you change the limit?
Fast charging your battery is very similar to overclocking your cores. If it draws higher amperage and the temperature goes up it will shorten the life of the battery. Slower charging keeps the temperature low and lengthens battery lifespan.
Fast charge w/ High amps = High temps, charges fast, & shortens battery lifespan
Normal charge = Low temps, normal charge speed, & longer battery lifespan
Bottom-line, if you don't mind getting a new battery and want to charge your phone quickly, enable fast charge.
666pluto said:
about the limit change, is it safe to play with such an option? didn't they place this limit for a reason?
but out of interest, how much faster can you make it charge if you change the limit?
Click to expand...
Click to collapse
I agree with my friend up above me.
pretty sure that over heating your battery will degrade the battery's chemicals & with time your maximum capacity will decrease.
My personal routine is using another 2 Zero Lemon spare batteries with their external slow charger (0.6 A).
always got a spare in my wallet and it is saved from a possible "memory effect" syndrome which shouldn't be excited in lithium ion batteries, but a recent study by a Japanese guy shows signs of a memory effect.
No idea how much time I save by fast charging. I'll time it next charge for you.
Sent from my GT-I9300 using XDA Premium 4 mobile app
Where can i get this charger?
Hey guys,
can you tell me, where i can get this 2A-charger for my S3? Preferably with a german plug...
Regards
Clark
Clark789 said:
Hey guys,
can you tell me, where i can get this 2A-charger for my S3? Preferably with a german plug...
Regards
Clark
Click to expand...
Click to collapse
there's no 2A charger for the S3. the one i have was originally for note 2 or something, i forgot. but you can charge the S3 with it...
if you have a regular 1A charger, then don't worry about it, it's the same basically
S3 is coded in the kernel to only charge at 1000ma.
You can override these settings with some kernels, but I wouldn't. Frying charging circuits are quite annoying.
It's for the S4. Note 2 chargers were black like ours.
Sent from my GT-I9300 using xda app-developers app