Charging currents - General Questions and Answers

How would I know what the max current is a device can support like an accessory? So for example, the stock charger that comes with the Plantronics Voyager Edge is only 500ma. What happens if I plug it into a Qualcomm QuickCharge 2.0 charger like what comes with the S6? Will it blow up? Regulate down and charge normally? Charge rapidly?

km8j said:
How would I know what the max current is a device can support like an accessory? So for example, the stock charger that comes with the Plantronics Voyager Edge is only 500ma. What happens if I plug it into a Qualcomm QuickCharge 2.0 charger like what comes with the S6? Will it blow up? Regulate down and charge normally? Charge rapidly?
Click to expand...
Click to collapse
it will charge normally. it doesnt matter how big the output of the charger is. the phone will regulate it to only what it wants.
only time you will have an issue is if your charger output is too small. the phone will charge slow, and risk damage to the charger.

bweN diorD said:
it will charge normally. it doesnt matter how big the output of the charger is. the phone will regulate it to only what it wants.
only time you will have an issue is if your charger output is too small. the phone will charge slow, and risk damage to the charger.
Click to expand...
Click to collapse
Does this also apply to the headset I mentioned? How would the current being too low damage the charger? USB ports and car charger are very low current in general
Sent from my E5823 using Tapatalk

km8j said:
Does this also apply to the headset I mentioned? How would the current being too low damage the charger? USB ports and car charger are very low current in general
Sent from my E5823 using Tapatalk
Click to expand...
Click to collapse
1. yes
2. i didnt say it would damage the charger, i said there is a risk of it. thats because if its too small, the charger is working at maximum all the time.
3. usb's are regulated, not maxing out potential. im guessing car chargers do the same, however im not sure why. likely has something to do with a safe level considering the fluctuation in input voltage from the battery.

Hmm... So what about using a non-QC 2.0 charger (such as some that Anker make) on devices that support QC 2.0? Is there some safety issue or will it just charge slightly slower?

km8j said:
Hmm... So what about using a non-QC 2.0 charger (such as some that Anker make) on devices that support QC 2.0? Is there some safety issue or will it just charge slightly slower?
Click to expand...
Click to collapse
sorry, i dont know about those.
maybe you misunderstood before, i cant think of any common instance where there would be a safety issue.
as unlikely as it is that you will ever burn up a charger (or device for that matter), the only thing that will happen is some small electronic parts will go bad. not some huge fire or whatever. sure on the device there could be a nice exploding fire, but there about always from defect and also extremely rare. it happens maybe 1 or 2 times a year, and its gets posted everywhere, then people think its an epidemic and start asking all these unnecessary questions. im sure the yearly device sales are in the hundreds of millions work wide. if a couple a year blow up, well s happens.

Related

[Q] HTC sensation charging with cigaretlighter on motorcycle

Hi
I'm having a problem with charging my HTC devices on my Honda Fireblade.
My motorcycle dealer added a cigaretlighter so I can charge the HTC while driving and using it as GPS.
The problem is that the Sensation (and even my Desire HD or HD2) won't charge although the indicator light on the charger is on. So I've tested the charger with other equiment and it works.
Does anyone knows what can be the problem? The battery of the Honda is 12V
thx for any advise!
What is the charger output?
It should have 5V and 1A or 2A. If voltage lower, it will not charge..
Sent from my HTC Sensation Z710e using XDA App
naimmkassim said:
What is the charger output?
It should have 5V and 1A or 2A. If voltage lower, it will not charge..
Sent from my HTC Sensation Z710e using XDA App
Click to expand...
Click to collapse
I use this charger also in the car and there it works.
I bought this charger when I was on a trip and it's original for nokia
He's right, your charger probably doesn't have enough output. I noticed that certain house chargers I already had were charging the phone extremely slow and others charged the phone quickly. That's when I noticed that the ones that charged the phone quickly were 5v and had at least 1A. The ones that were less were too low of an output to charge the phone properly. You're more than likely experiencing the same thing. I'm willing to bet if you check what the output is on the charger you're using you'll probably see it either isn't the right voltage or the amps are too low...or both.
mysterioustko said:
He's right, your charger probably doesn't have enough output. I noticed that certain house chargers I already had were charging the phone extremely slow and others charged the phone quickly. That's when I noticed that the ones that charged the phone quickly were 5v and had at least 1A. The ones that were less were too low of an output to charge the phone properly. You're more than likely experiencing the same thing. I'm willing to bet if you check what the output is on the charger you're using you'll probably see it either isn't the right voltage or the amps are too low...or both.
Click to expand...
Click to collapse
All right, I'll check it first....it's in the car now
The nokia charger is
input 12 V
output 5V - 550mA
So you guys are right....it still doesn't explain to me why the charger works in car and not on motorcycle. Maybe because the battery output in car is higher A?
I'm not into electrical stuff :-(
So, if I order for example this one....it could work on my motorbike?
http://www.netimes.com/shop/usb-car...ung-galaxy-tab-p1000-p-3018.html?cPath=80_818
tsmetjen said:
The nokia charger is
input 12 V
output 5V - 550mA
So you guys are right....it still doesn't explain to me why the charger works in car and not on motorcycle. Maybe because the battery output in car is higher A?
I'm not into electrical stuff :-(
Click to expand...
Click to collapse
Bear in mind I'm just speculating with this but your car's cigarette lighter may be putting out more power than your motorcycle's (especially since it wasn't original). Also though it may have been charging in your car, that doesn't mean it was charging at the rate it should have been (it might have been barely charging). Sort of like what I was saying I had experienced when I used a lower output charger (the really slow charging).
Yeah that looks ok. I'd imagine that you be sufficient.
The charger I have is a Nokia DC-4. Bought from Nokia themselves as lots of shops sell copies. The copies don't seem to have the right electronics in them to power the more expensive (read: power hungry) phones. I have to have a converter on the end to go to micro-usb (also a Nokia part) but it means we can also use it for the wife's Nokia.
I'd make sure you went genuine part, or at least one that someone else says works.
Dave
tsmetjen said:
So, if I order for example this one....it could work on my motorbike?
http://www.netimes.com/shop/usb-car...ung-galaxy-tab-p1000-p-3018.html?cPath=80_818
Click to expand...
Click to collapse
It should be working. But better you try it first, borrow from a friend that have this charger and try it on your motobike. If still not working. My conclusion is that your motobike most probabily produce a low voltage or current than what it were suppose to.
tsmetjen said:
So, if I order for example this one....it could work on my motorbike?
http://www.netimes.com/shop/usb-car...ung-galaxy-tab-p1000-p-3018.html?cPath=80_818
Click to expand...
Click to collapse
I've received the charger. Did a test last night and test....failed. Still not charging.
So :
could it ba the usb cable itself?
can I measure the output current on my bike?
I'm with stupid on these matters, and my mecancic is on holiday

How to mod charging cable for fast charge?

Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
pokatusher said:
Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
Click to expand...
Click to collapse
I think the mod (shorting the data lines) should work, but just make sure that the charger is actually capable of delivering the right amperage.
whoa, u really wanna do that, coz the wont hold for a long time, 3A really a big current
syahazu said:
whoa, u really wanna do that, coz the wont hold for a long time, 3A really a big current
Click to expand...
Click to collapse
As of my understanding you are trying to say that charging the battery at 3A would give shorter batterylife.
Would you kindly post in a way readable for humans to make your meaning clear, as your post as quoted here was a struggle to understand.
And for complying to USB standards the device is probably able to output 2A on one of the ports and 1A on the other, totalling in a amperage of 3A. Now as I took a look at the adapter and it's specifications, it seems to me that it is just a 7805 voltage regulator in an enclosure, which I honestly wouldn't trust even a little bit.
Lähetetty minun C6603 laitteesta Tapatalkilla
velihukka said:
it seems to me that it is just a 7805 voltage regulator in an enclosure, which I honestly wouldn't trust even a little bit.
Click to expand...
Click to collapse
I'm not enough of a techie to confirm or deny if this would work, but I do agree with Velihukka... I got a bad feeling about this...
You do realise to get thing working properly you'd need to wire a new 12V circuit into your car's switchbox right? You don't want to be pulling an extra 3A out of a random 12V line in your car, a lot of your internal electrics are only running 10A fuses.
If you don't smoke, you could use the line powering your cigarette lighter... but then that would beg the question, why not just use a 12V USB adaptor that can output 3A and short the data terminals?
sorry 4 my english mate, im still improving it.. yup, i think that can do, but depends on you... i would rather use 2a current output charger... i hope my batttery would last longer lifetime when i used it
You should simply go for this
http://www.belkin.com/in/IWCatProductPage.process?Product_Id=735847
It will cost you around 400 bucks for 2.1 Amp socket in your local car accessories market
And then use your data cable to charge your phone...
Sent from Sony Xperia ZL 4.3 Rooted
pokatusher said:
Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
Click to expand...
Click to collapse
It wont work at all for xperia z. i am an hardware tester and i am sure any mods to hack battery life or charging it fast will destroy your battery.
You cannot force more power into the battery. The phone has circuitry that regulates the charging current, which will have upper and lower limits. If that upper limit is say 2A, it doesn't matter if you plug into a 2A power supply or a 50A supply, it will still only draw 2A.
Sent from my C6603 using Tapatalk
The phones circuitry charges the phone by 500mAh by unnamed or unknown usb cable. when you plug it to a sony cable it will give you "fast charge" so it charges with 900-1000mAh. So yeah, there is something in the cable that makes it different from the other ones.
Try it with your sony cable and you get max amperage, and yeah no point forcing a million amps to it when the phone just takes what it needs.
pokatusher said:
Hi!
Have 3A charger for car (like this) and i want to get maximum power and charging speed. As i know, if i use simple usb cable, phone will get only 500mA.
How to force it to use more power? Or it use it by default, without any mods?
Found this mod for HTC, and this for Nexus 7, does it will work?
Click to expand...
Click to collapse
Xz has battery monitor and its the thing that none can bypass. Also everytime the device heats up the amperage going in the battery gets more limited or even depleting...
Defects or flaw I'm not sure, but thats just it with Xz

[Q] sm-p905 Charging with non genuine charger

Gday All,
I realise that this topic has been mentioned in a few threads, but from what I could find, there is no definiteve fix.
Is there a way to disable this so that a non-genuine charger will work once the screen turns off, or if I was to root the device, is there then a way to do it.
Please dont flame me, I'm a total newb to android, and I dont mind admitting that.
Bit dissapointed that Samsung has sunk to this.
TIA!
Not sure what issues you are having but I have been using a few different chargers without issue. Which exact charging method are you trying to use (cable type, charger type, charger rated output voltage and amperage)?
Sent from my SM-P900 using Tapatalk
The problem isn't that the charger is 3rd party.
The problem is that the device requires a 5.1V 2A charger or higher.
Anything lower than that is simply not powerful enough. You can find these specs in small lettering on the charger. Most cheap 3rd party launchers are 5V 1A.
CrazyManR32 said:
Gday All,
I realise that this topic has been mentioned in a few threads, but from what I could find, there is no definiteve fix.
Is there a way to disable this so that a non-genuine charger will work once the screen turns off, or if I was to root the device, is there then a way to do it.
Please dont flame me, I'm a total newb to android, and I dont mind admitting that.
Bit dissapointed that Samsung has sunk to this.
TIA!
Click to expand...
Click to collapse
I was one of the ones having problems with it needing to have the screen on to charge. It was a problem with the charger (yes, it was marked as a high amperage charger), changed to a different one (Anker 40W 5 port) and it's working fine.
ericbergan said:
I was one of the ones having problems with it needing to have the screen on to charge. It was a problem with the charger (yes, it was marked as a high amperage charger), changed to a different one (Anker 40W 5 port) and it's working fine.
Click to expand...
Click to collapse
Huge second on the Anker. I love that charger by the way. With various devices I would get irritated with some refusing to charge on certain chargers (my BlackBerry Bold in particular). I've since switched to the Anker 5 port 40 Watt and no longer worry about which cable I'm reaching for. Every device gets the power it needs with no fuss.
muzzy996 said:
Not sure what issues you are having but I have been using a few different chargers without issue. Which exact charging method are you trying to use (cable type, charger type, charger rated output voltage and amperage)?
Sent from my SM-P900 using Tapatalk
Click to expand...
Click to collapse
Initially i was using a belkin 2 port, 2.1amp per port charger, which would start charging but stop once the screen was off.
ShadowLea said:
The problem isn't that the charger is 3rd party.
The problem is that the device requires a 5.1V 2A charger or higher.
Anything lower than that is simply not powerful enough. You can find these specs in small lettering on the charger. Most cheap 3rd party launchers are 5V 1A.
Click to expand...
Click to collapse
This seems logical, but it does work when i use the genuine charger from my sgs3 which is a 5vdc 1a charger. Takes all night to charge, but charges non the less.
ericbergan said:
I was one of the ones having problems with it needing to have the screen on to charge. It was a problem with the charger (yes, it was marked as a high amperage charger), changed to a different one (Anker 40W 5 port) and it's working fine.
Click to expand...
Click to collapse
Thanks for the info mate, ill see if i can get hold of one of these in australia, that being said, it appears that these are also 5v rather then the 5.3?
CrazyManR32 said:
This seems logical, but it does work when i use the genuine charger from my sgs3 which is a 5vdc 1a charger. Takes all night to charge, but charges non the less.
Click to expand...
Click to collapse
That's because the retention rate of the S3's charger is higher than that of a generic cheap 3rd party one. Where the S3 charger actually delivers 0.8-1A, the cheaper ones usually average around 0.5A.
This is why charging over a usb 2.0 port without any power boosts also (usually, there have been some exceptions) doesn't work.
I usually charge mine with my Note 3 or S5 charger, as the three are all the same charger.

Charging Pixel with old phone chargers

As I'm sure is the case for many of you, I have a ton of typical USB chargers around the house, which supply anywhere from 0.8A to 1.5A output. Going with the assumption that I don't care how long it takes to charge, is there any risk with using the USB C-A cable that came with my pixel and plugging into any of those old USB chargers? They should all work, right? Just as different speeds depending on the output current?
I am not an expert, but from my research into the safety of USB-A to USB-C cables, the "risk" will generally come as a result of purchasing a cheap cable that does not have the appropriate (56k) resistor. The cable that came directly from google has the appropriate resistor and is not low quality, so it will be safe to plug into any functioning USB port (either on your computer or a charger).
That being said, if you have a malfunctioning charger, or there is power surge etc., that is an "act of god" and what happens happens
You may actually be better off using these old chargers if they work correctly. The slower you charge your phone, the better it is for the longevity (years) of your battery.
Yeah, that is why I didn't care about charging speed. For plugging it in next to my bed each night, I figure slower is better. However, I just received a mini USB to USB C from Amazon, and used that to plug my pixel in last night to a 1a charger. And while the phone did say charging over USB, it didn't gain any battery overnight and instead continued to discharge until I woke up in the morning. Is anyone else seeing anything like that?
Not trying to be mean or name call but I personally think you all are crazy. Buying a $700 phone and using a cheap charger that could have the risk to break your phone. Especially if you know better. Honestly, spending the $30-$40 from a charger from Google or an approved charger is just smart for the long term and not risk losing $700. Just my 2 cents. I did the same for the car charger.
Sure, I hear your point. But honestly I know that it is better for the battery to charge slower, so I would rather use a low power charger next to my bed each night, and only use the included quick charger when I need a quick top-off.
BlueWRXPride said:
Sure, I hear your point. But honestly I know that it is better for the battery to charge slower, so I would rather use a low power charger next to my bed each night, and only use the included quick charger when I need a quick top-off.
Click to expand...
Click to collapse
Have to consider 2 points since there are so many inaccuracies about this subject:
1) Inadequate chargers with insufficient output cause batteries to become overheated, consequently reduce battery charging cycles. Smart batteries are not adversely affected by certified quick chargers.
2) Turbo chargers do not "top off". When a battery gets to around 80%, the appropriate charger begins its slower charging as to not overload it. Once at 100%, charging stops, and the maintenance process begins. As battery level drops to around 97.6%, trickle charging begins.
In sum, a certified, OEM-equivalent quick charger, even with higher output would not damage batteries.
The phone supports most standards however usb c and Qualcomm quick charge are not compatible and you fall back to 5v 3 amp at best. Make sure to fully insert the cable into the phone. It has to click. I've accidently not charged overnight that way.
I've got a bunch of turbo chargers that I've accumulated over the years. Using a non-[manufacturer of current phone] charger has never damaged my phone. I just bought a 10 pack of USB C adapters and popped one on every charger so I can continue using my old ones. No issues yet and I don't anticipate any.
Sent from my Pixel using Tapatalk
joshw0000 said:
I've got a bunch of turbo chargers that I've accumulated over the years. Using a non-[manufacturer of current phone] charger has never damaged my phone. I just bought a 10 pack of USB C adapters and popped one on every charger so I can continue using my old ones. No issues yet and I don't anticipate any.
Sent from my Pixel using Tapatalk
Click to expand...
Click to collapse
Sure, you can use non-oem chargers. That's not the problem. Issues only potentially arise when the chargers do not provide adequate output, or their "smart" capabilities are not up to specs. I use all kinds of chargers bought at Verizon, Best Buy, etc. I also use Amazon chargers as long as they're not too far off OEM requirements. Also, people don't think about the importance of a good, thick cable.
I have a ton of Samsung fast chargers and Samsung USB a to c cables . Would those be safe?
parmend said:
I have a ton of Samsung fast chargers and Samsung USB a to c cables . Would those be safe?
Click to expand...
Click to collapse
Many will say no big deal. However, I'd say let's hear it from the horse's mouth. Here's Google engineer Benson Leung https://plus.google.com/+BensonLeung/posts/cEvVQLXhyRX. You be the judge.
Bottom line, to answer your question, no, quick charging methodology used by Samsung and Motorola is not supported by the Pixel. Your phone will charge at a slower rate. Will it damage the phone in the long run? Likely not. Well, I'll let you guys test for me.

Warp charger advice

Can anyone let me know the risks, if any, of using the OP7 pro warp charger with other devices? I live in the UK if the voltage in matters.
I wanted to have one charger to charge my OP7pro, Sabatt e12 earphones and Nintendo Switch (undocked).
Anything I should think of? I don't know anything about voltages or fast charging. The headphones say to use a charger that is 5v/1a or "risk damaging".
Can anyone advise?
Thanks
Warp charge is 5v/6a, but whatever device you are charging should limit the voltage and amps. But ultimately yes you could damage your earphones.
It depends. Like Konfuzion has said, every device should have overvoltage protection or something, even earbuds. But it will be better (more safe) to use regular 5V/1A charger instead your Warp charger.
If your device use 5V as a power source, there shouldn't be any problem to use the Warp Charger. I've already used it to charge a Nintendo 2DS and Bluetooth devices and it charges normally, because is the device who control the power consumption (and therefore, the current)
Thanks. I figured because the instructions of the earbuds were specific that it might be a bigger risk.
Thanks. Appreciate the replies. Can I get any cables that would limit the charge? I ask because it would be easier to carry two cables and one plug than 2 plugs. Sorry if that is a stupid question. I know nothing about voltages and fast charging...which should be obvious by now ?
thetonyclifton said:
Can anyone let me know the risks, if any, of using the OP7 pro warp charger with other devices? I live in the UK if the voltage in matters.
I wanted to have one charger to charge my OP7pro, Sabatt e12 earphones and Nintendo Switch (undocked).
Anything I should think of? I don't know anything about voltages or fast charging. The headphones say to use a charger that is 5v/1a or "risk damaging".
Can anyone advise?
Thanks
Click to expand...
Click to collapse
The old dash chargers I believe had some technology that negotiated with the phone before it put out the full amps, I'm pretty sure the warp chargers/cables have that too. When you plug your phone in, you will notice it doesn't warp charge immediately, it charges normally for a second then warp charges, so any device plugged in that can't negotiate with the charger should cap out at 2a,which is where the device your charging's protection comes in. You should be fine
Edit: be careful with your switch though, they are known to brick with 3rd party charges (google/youtube that) but it might have just been crappy 3rd party chargers, I don't have a switch to test
thetonyclifton said:
Thanks. I figured because the instructions of the earbuds were specific that it might be a bigger risk.
Thanks. Appreciate the replies. Can I get any cables that would limit the charge? I ask because it would be easier to carry two cables and one plug than 2 plugs. Sorry if that is a stupid question. I know nothing about voltages and fast charging...which should be obvious by now
Click to expand...
Click to collapse
Actually, no. If you use a crappy cable, you could get (at least) the cable on fire (It won't happen, but technically is posible if you made your own cable with a very very thin conductor).
As I said before, is the device who limit the current at charging. In the case of the dash/warp charger, the cable has "a little extra" that allow the high current, and that is why you can't use any cable to get the dash/warp experience (if you want more info, read https://www.reddit.com/r/oneplus/comments/928iqn/whats_the_difference_between_dash_charge_cables/ )

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