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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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[ot] phone chargers
Hello,
I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? Would it work if I bought one of the charge only cables with red plugs? Presumably they block the signaling on the data wires? Or would it be cheaper to just buy a Samsung charger? I thought the idea behind using usb charging was that any charger could be sued for any device? Thanks, Stephen. |
#2
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[ot] phone chargers
On Mon, 12 Dec 2016 11:42:01 +0000, Stephen
wrote: Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? Would it work if I bought one of the charge only cables with red plugs? Presumably they block the signaling on the data wires? Or would it be cheaper to just buy a Samsung charger? I thought the idea behind using usb charging was that any charger could be sued for any device? Thanks, Stephen. I have successfully used a Nokia charger to charge a Samsung phone. |
#3
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[ot] phone chargers
Stephen wrote:
I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? Would it work if I bought one of the charge only cables with red plugs? Presumably they block the signaling on the data wires? Or would it be cheaper to just buy a Samsung charger? I thought the idea behind using usb charging was that any charger could be sued for any device? It should work, maybe not as fast as a 'proper' Samsung charger but still should charge the phone and tablet. Have you checked the cable? Have you checked if anything else can be charged from the wall-wart? A 'generic' wall-wart USB should provide the minimum 500mA that is specified for USB 2.0. That *might* not be enough to actually charge your phone and/or tablet when they are turned on but it should be just about enough for them to run without discharging. Have you tried turning phone/tablet off and then charging it? If this works then the charger isn't powerful enough to charge them when turned on. -- Chris Green · |
#4
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[ot] phone chargers
On Mon, 12 Dec 2016 11:58:50 +0000, Chris Green wrote:
Have you checked the cable? Have you checked if anything else can be charged from the wall-wart? The cable works perfectly when sued with the Samsung charger. I do not have any other devices to try, so I do not know if the charger is working,. That said, I bought two chargers and neither work, so it seems unlikely they are both broken. A 'generic' wall-wart USB should provide the minimum 500mA that is specified for USB 2.0. But that's why I bought these new chargers; they are supposed to be rated to 2.1A, which is more than the Samsung one is. They were supposed to be an improvement. I was hoping that it might charger faster. |
#5
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[ot] phone chargers
Stephen wrote
Chris Green wrote Have you checked the cable? Have you checked if anything else can be charged from the wall-wart? The cable works perfectly when sued with the Samsung charger. I do not have any other devices to try, so I do not know if the charger is working,. That said, I bought two chargers and neither work, so it seems unlikely they are both broken. True. A 'generic' wall-wart USB should provide the minimum 500mA that is specified for USB 2.0. But that is too little for charging a tablet or phone. But that's why I bought these new chargers; they are supposed to be rated to 2.1A, which is more than the Samsung one is. They were supposed to be an improvement. I was hoping that it might charger faster. It doesn't work like that. If that was possible Samsung would have done their charger like that. Just return the chargers for a refund because they wont charge your Samsung phone and tablet. |
#6
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[ot] phone chargers
On 12/12/2016 23:50, Rod Speed wrote:
It doesn't work like that. If that was possible Samsung would have done their charger like that. Motorola did exactly this when they provided my phone with a 700mA charger when the phone is capable of charging at 1.7A. (and does) Funny that the recommended "optional extra" charger is rated at 2.1A Same with the Lumia SWMBO has, again supplied with a 700mA charger by Microsoft, but supports charging at 1.5A. Yeah battery longevity vs charge current blah blah, it's not. It's simple cost-cutting. |
#7
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[ot] phone chargers
Lee wrote
Rod Speed wrote It doesn't work like that. If that was possible Samsung would have done their charger like that. Motorola did exactly this when they provided my phone with a 700mA charger when the phone is capable of charging at 1.7A. (and does) Funny that the recommended "optional extra" charger is rated at 2.1A Yes, but SAMSUNG doesn’t do it like that, as I said. Same with the Lumia SWMBO has, again supplied with a 700mA charger by Microsoft, but supports charging at 1.5A. Yes, but SAMSUNG doesn’t do it like that, as I said. Yeah battery longevity vs charge current blah blah, it's not. It's simple cost-cutting. Which SAMSUNG doesn’t do. |
#8
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[ot] phone chargers
In article ,
Stephen wrote: But that's why I bought these new chargers; they are supposed to be rated to 2.1A, which is more than the Samsung one is. They were supposed to be an improvement. I was hoping that it might charger faster. Think all the charge control is done inside the phone. The PS merely supplies the required volts and current. Obviously, if it can't supply enough current the phone will either charge slower, or not at all. But it's rather unlikely Samsung would supply a unit which restricted the charge time. -- *If they arrest the Energizer Bunny, would they charge it with battery? * Dave Plowman London SW To e-mail, change noise into sound. |
#9
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[ot] phone chargers
Stephen wrote:
On Mon, 12 Dec 2016 11:58:50 +0000, Chris Green wrote: Have you checked the cable? Have you checked if anything else can be charged from the wall-wart? The cable works perfectly when sued with the Samsung charger. I do not have any other devices to try, so I do not know if the charger is working,. That said, I bought two chargers and neither work, so it seems unlikely they are both broken. A 'generic' wall-wart USB should provide the minimum 500mA that is specified for USB 2.0. But that's why I bought these new chargers; they are supposed to be rated to 2.1A, which is more than the Samsung one is. They were supposed to be an improvement. I was hoping that it might charger faster. They also need to 'tell' the Samsung that they are 2.1A capable, this may well be what's not working. -- Chris Green · |
#10
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[ot] phone chargers
On Monday, 12 December 2016 11:42:02 UTC, Stephen wrote:
Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? Would it work if I bought one of the charge only cables with red plugs? Presumably they block the signaling on the data wires? Or would it be cheaper to just buy a Samsung charger? I thought the idea behind using usb charging was that any charger could be sued for any device? Thanks, Stephen. Chargers don't usually have any inbuilt smarts. If it doesn't work get a refund. Some unbranded chargers are unsafe. NT |
#11
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[ot] phone chargers
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#12
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[ot] phone chargers
In article ,
Stephen wrote: I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? I have a couple of Samsung devices and both charge just fine from a non Samsung PS. Indeed I bought a mains socket with built in USB charger outlets (to make things neater than wall warts) and that charges everything I have that uses this system. Are you sure your new charger produces enough current? -- *Why do we say something is out of whack? What is a whack? Dave Plowman London SW To e-mail, change noise into sound. |
#13
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[ot] phone chargers
In article ,
Dave Plowman (News) wrote: In article , Stephen wrote: I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? I have a couple of Samsung devices and both charge just fine from a non Samsung PS. Indeed I bought a mains socket with built in USB charger outlets (to make things neater than wall warts) and that charges everything I have that uses this system. Are you sure your new charger produces enough current? I think that's the point. With my wife's Nokia phone, if you plug it into a low current charger, a mesage appears on the screen to that effect. -- from KT24 in Surrey, England |
#14
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[ot] phone chargers
After serious thinking charles wrote :
I think that's the point. With my wife's Nokia phone, if you plug it into a low current charger, a mesage appears on the screen to that effect. Mine too, but if the message is ignored, it charges anyway though rather slowly. |
#15
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[ot] phone chargers
On Monday, 12 December 2016 13:33:52 UTC, charles wrote:
In article , Dave Plowman (News) wrote: In article , Stephen wrote: I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? I have a couple of Samsung devices and both charge just fine from a non Samsung PS. Indeed I bought a mains socket with built in USB charger outlets (to make things neater than wall warts) and that charges everything I have that uses this system. Are you sure your new charger produces enough current? I think that's the point. With my wife's Nokia phone, if you plug it into a low current charger, a mesage appears on the screen to that effect. If I plug my ipad air 2 into an old iphone charger (iphone4) the ipad comes on then switches off in a one second cycle something I wouldn't have expected as on another old charger it just doesn't charge (battery indicator doesn't go green). There have been sonme instances of the lead causing charguing problems but I haven't come uop against that one yet. |
#16
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[ot] phone chargers
"whisky-dave" wrote in message ... On Monday, 12 December 2016 13:33:52 UTC, charles wrote: In article , Dave Plowman (News) wrote: In article , Stephen wrote: I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? I have a couple of Samsung devices and both charge just fine from a non Samsung PS. Indeed I bought a mains socket with built in USB charger outlets (to make things neater than wall warts) and that charges everything I have that uses this system. Are you sure your new charger produces enough current? I think that's the point. With my wife's Nokia phone, if you plug it into a low current charger, a mesage appears on the screen to that effect. If I plug my ipad air 2 into an old iphone charger (iphone4) the ipad comes on then switches off in a one second cycle something I wouldn't have expected as on another old charger it just doesn't charge (battery indicator doesn't go green). Most likely that one happens like that because it trys to take the current it wants from the iphone4 charger and that sags badly voltage wise when it does that. There have been sonme instances of the lead causing charguing problems but I haven't come uop against that one yet. |
#17
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[ot] phone chargers
On Tuesday, 13 December 2016 18:48:38 UTC, Rod Speed wrote:
"whisky-dave" wrote in message ... On Monday, 12 December 2016 13:33:52 UTC, charles wrote: In article , Dave Plowman (News) wrote: In article , Stephen wrote: I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Could it be that the charger I have is not that sophisticated and is not talking to the phone or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? I have a couple of Samsung devices and both charge just fine from a non Samsung PS. Indeed I bought a mains socket with built in USB charger outlets (to make things neater than wall warts) and that charges everything I have that uses this system. Are you sure your new charger produces enough current? I think that's the point. With my wife's Nokia phone, if you plug it into a low current charger, a mesage appears on the screen to that effect. If I plug my ipad air 2 into an old iphone charger (iphone4) the ipad comes on then switches off in a one second cycle something I wouldn't have expected as on another old charger it just doesn't charge (battery indicator doesn't go green). Most likely that one happens like that because it trys to take the current it wants from the iphone4 charger and that sags badly voltage wise when it does that. There have been sonme instances of the lead causing charguing problems but I haven't come uop against that one yet. Yes I know but IF the ipad communicates over the data lines it shouldn't get itself into this situation. It'd realise that it couldn't get enough power to charge and give up trying just as my old ipad3 did when trying to get power from the keyboard it comes up with a message telling you it's not charging. |
#19
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[ot] phone chargers
In article ,
Brian Gaff wrote: Well, I've never heard of smart chargers that seem to be just usb chargers. The thing is will the phone charge from a pc usb port? I suspect not. If I plug my Samsung Galaxy phone into the computer via USB - say to transfer something - it shows it is on charge. Don't know how slow that would be, though. -- *Eschew obfuscation * Dave Plowman London SW To e-mail, change noise into sound. |
#20
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[ot] phone chargers
On 13/12/2016 00:30, Dave Plowman (News) wrote:
In article , Brian Gaff wrote: Well, I've never heard of smart chargers that seem to be just usb chargers. The thing is will the phone charge from a pc usb port? I suspect not. If I plug my Samsung Galaxy phone into the computer via USB - say to transfer something - it shows it is on charge. Don't know how slow that would be, though. I had access to an early generation USA import Kindle. It would charge directly from the USB port on the PC but not from a USB hub connected to said port. Investigation showed that the hub would only provide 0.4A and it seems that this prevented the charging circuit in the Kindle coming to life. -- Chris B (News) |
#21
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[ot] phone chargers
Stephen wrote
I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. Why is this not working? Most likely it's a useless charger. I read a post here some months ago saying that the PSU and the device communicate (presumably over the data wires) and presumably the phone tells the charger what current it will accept? Yes. But that communication is pretty primitive, normally the signalling is done with static voltage levels until you get to USB C which you arent using. Could it be that the charger I have is not that sophisticated and is not talking to the phone Or not signalling what the phone and tablet expect. or does Samsung employ some way of checking whether the supply is a Samsung charger - I'm not an Apple man but I think Apple do the same? Apple actually check the cable, not the charger, and quite a few non apple cables do work fine. Would it work if I bought one of the charge only cables with red plugs? Likely that is what that charger does already, doesn't have the data wires and so the phone and tablet doesn't ever start charging because it can't see what it expects to see with the voltages on the data lines. Presumably they block the signaling on the data wires? Yes, but that is likely to be the problem that stops the phone and tablet from charging. Or would it be cheaper to just buy a Samsung charger? Wouldn't be cheaper but will certainly work. I thought the idea behind using usb charging was that any charger could be sued for any device? That was certainly the intentions, but things got quite messy later when chargers started to be able to deliver more than the original 0.5A that USB originally supported and there needed to be a way to signal which could do that and Apple did that differently to the others. https://en.wikipedia.org/wiki/USB#Power |
#22
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[ot] phone chargers
On Mon, 12 Dec 2016 11:42:01 +0000, Stephen wrote:
Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. snip Might help if you were more specific about the model. Very recent ones may be more picky. Haven't had any problems with Galaxy S3/4/5 phones. Sony Xperia Z tablet will warn if the charge current is not enough to charge when the device is turned on. Cheers Dave R -- AMD FX-6300 in GA-990X-Gaming SLI-CF running Windows 7 Pro x64 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus |
#23
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[ot] phone chargers
On 12/12/2016 11:42, Stephen wrote:
Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. I believe Samsung chargers used a voltage which exceeded the USB standard and Samsung devices only charge properly with this over voltage. Something like 5.2 volts instead of 5 (I made that up just to give you an idea) With my really old Samsung tab it was the case that it would charge with other USB chargers but was really slow. However recently I have bought a couple of chargers and it charges fine with them, one a plug socket I bought only last week. I can give you specific devices if you are interested but maybe you should try all the chargers you have available. |
#24
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[ot] phone chargers
On 13/12/2016 21:28, Nick wrote:
On 12/12/2016 11:42, Stephen wrote: Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. I believe Samsung chargers used a voltage which exceeded the USB standard and Samsung devices only charge properly with this over voltage. Something like 5.2 volts instead of 5 (I made that up just to give you an idea) With my really old Samsung tab it was the case that it would charge with other USB chargers but was really slow. However recently I have bought a couple of chargers and it charges fine with them, one a plug socket I bought only last week. I can give you specific devices if you are interested but maybe you should try all the chargers you have available. A guy here give a different explanation. But the implication is the same only some USB chargers charge my Tab quickly. http://android.stackexchange.com/questions/21144/how-much-power-does-a-galaxy-tab-10-1-charger-need-to-supply See Florian F's answer. |
#25
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[ot] phone chargers
On 13/12/16 21:28, Nick wrote:
On 12/12/2016 11:42, Stephen wrote: Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. I believe Samsung chargers used a voltage which exceeded the USB standard and Samsung devices only charge properly with this over voltage. Something like 5.2 volts instead of 5 (I made that up just to give you an idea) With my really old Samsung tab it was the case that it would charge with other USB chargers but was really slow. However recently I have bought a couple of chargers and it charges fine with them, one a plug socket I bought only last week. I can give you specific devices if you are interested but maybe you should try all the chargers you have available. 5.2 V is within USB spec IIRC. The magic forumula is a resistor chain between +5V, 0V and the data lines: http://blog.curioussystem.com/2010/0...vice-charging/ (any broken images, click on them, the preview is broken) |
#26
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[ot] phone chargers
On 13/12/2016 23:26, Tim Watts wrote:
On 13/12/16 21:28, Nick wrote: On 12/12/2016 11:42, Stephen wrote: Hello, I bought an unbranded wall-wart to usb output charger from CPC, hoping to use it to charge my mobile phone or tablet (both are Samsung). When I connect either device using the original Samsung cable, neither device charges. I believe Samsung chargers used a voltage which exceeded the USB standard and Samsung devices only charge properly with this over voltage. Something like 5.2 volts instead of 5 (I made that up just to give you an idea) With my really old Samsung tab it was the case that it would charge with other USB chargers but was really slow. However recently I have bought a couple of chargers and it charges fine with them, one a plug socket I bought only last week. I can give you specific devices if you are interested but maybe you should try all the chargers you have available. 5.2 V is within USB spec IIRC. The magic forumula is a resistor chain between +5V, 0V and the data lines: http://blog.curioussystem.com/2010/0...vice-charging/ (any broken images, click on them, the preview is broken) Yep, I did see a similar explanation and reposted to correct my initial post. I had read it was over voltage a few years ago but this appears a more convincing argument. Especially when 2 or 3 years ago when I had the problem I tried 4 of 5 non Samsung chargers and none of them worked (fast charge). Whereas recently I have bought two new non Samsung chargers, both of which fast charged. The one I bought last week was. £11.85 http://www.screwfix.com/p/british-general-13a-2g-sp-switched-socket-3-1a-2g-usb-charger-white/8529p However I'm tempted to buy some more and this is less money £10 for but only 2.1A instead of 3.1. Maybe it doesn't do this fast charging either I can't see how to tell, apart from buying and trying. http://www.screwfix.com/p/bg-13a-2-gang-sp-switched-socket-usb-charger-outboard-rocker-white/8534f?cm_sp=homepage-_-home-_-8534f |
#27
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[ot] phone chargers
In article ,
Nick wrote: 5.2 V is within USB spec IIRC. The magic forumula is a resistor chain between +5V, 0V and the data lines: http://blog.curioussystem.com/2010/0...vice-charging/ (any broken images, click on them, the preview is broken) Yep, I did see a similar explanation and reposted to correct my initial post. I had read it was over voltage a few years ago but this appears a more convincing argument. Especially when 2 or 3 years ago when I had the problem I tried 4 of 5 non Samsung chargers and none of them worked (fast charge). Whereas recently I have bought two new non Samsung chargers, both of which fast charged. The one I bought last week was. £11.85 http://www.screwfix.com/p/british-general-13a-2g-sp-switched-socket-3-1a-2g-usb-charger-white/8529p However I'm tempted to buy some more and this is less money £10 for but only 2.1A instead of 3.1. Maybe it doesn't do this fast charging either I can't see how to tell, apart from buying and trying. http://www.screwfix.com/p/bg-13a-2-gang-sp-switched-socket-usb-charger-outboard-rocker-white/8534f?cm_sp=homepage-_-home-_-8534f Are you certain your Samsung phone can be charged faster by using a different PS from the one supplied? If you're talking a Galaxy, not exactly a budget phone and it would be odd to me if just changing such a cheap part improved the charging time. Which on mine is pretty fast anyway. Only difference here is I use a charger only USB lead from a PS built into a socket. -- *America is so advanced that even the chairs are electric. Dave Plowman London SW To e-mail, change noise into sound. |
#28
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[ot] phone chargers
On 14/12/2016 11:04, Dave Plowman (News) wrote:
In article , Nick wrote: 5.2 V is within USB spec IIRC. The magic forumula is a resistor chain between +5V, 0V and the data lines: http://blog.curioussystem.com/2010/0...vice-charging/ (any broken images, click on them, the preview is broken) Yep, I did see a similar explanation and reposted to correct my initial post. I had read it was over voltage a few years ago but this appears a more convincing argument. Especially when 2 or 3 years ago when I had the problem I tried 4 of 5 non Samsung chargers and none of them worked (fast charge). Whereas recently I have bought two new non Samsung chargers, both of which fast charged. The one I bought last week was. £11.85 http://www.screwfix.com/p/british-general-13a-2g-sp-switched-socket-3-1a-2g-usb-charger-white/8529p However I'm tempted to buy some more and this is less money £10 for but only 2.1A instead of 3.1. Maybe it doesn't do this fast charging either I can't see how to tell, apart from buying and trying. http://www.screwfix.com/p/bg-13a-2-gang-sp-switched-socket-usb-charger-outboard-rocker-white/8534f?cm_sp=homepage-_-home-_-8534f Are you certain your Samsung phone can be charged faster by using a different PS from the one supplied? It's a Samsung Tab (2?) 10.1 about 5 years old. The problem was that when using a non Samsung charger it didn't seem to charge at all with the screen on and took like 10 hours to charge with the screen off. During charging as well as a lightening bolt on the battery icon there was a thin red cross. Initially I assumed this was due to lack of amps from the non Samsung charger but further investigation determined it wasn't amp related. So I'm not saying the new chargers charge faster than a Samsung one just that they don't charge appallingly slowly. I think there are just two speeds fast and slow. It is easy to see which the charger is by if the red cross appears on the battery charging icon. |
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[ot] phone chargers
On 12/12/2016 12:00, Jethro_uk wrote:
On Mon, 12 Dec 2016 11:42:01 +0000, Stephen wrote: snip IME USB charging is a minefield ... it's as standard as RS-232 (C). Does the charger supply enough current ? I had a (car) charger which simply could not keep my phone charged (let alone top it up) when the satnav was running. IIRC isn't there a fallback for dumb devices ? +1 Assuming the charger even works My Samsung tablet refuses to charge from anything less than a 2.1A charger, it's not bothered by the brand of the charger though. Also it will charge from the USB 3.0 on my desktop PC, albeit very slowly |
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