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109 posts

Master Geek


#269952 17-Apr-2020 08:52
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I have an older Samsung tablet that uses a 5V 2Amp 10W charger that I have mislaid.

 

My ipad has a 5.2V 2.4Amp 12W charger. 
Can I use that for charging the Samsung or is it too different?

 

Thanks, Ken

 

 


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  #2463887 17-Apr-2020 09:10
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I think it should work just fine.





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  #2463912 17-Apr-2020 09:21
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It will work. Done it myself.
Though it can drop to a lower charge rate.




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Geek


  #2464126 17-Apr-2020 13:11
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The budget charger that i use to charge my Samsung Tablet is incredibly slow.

 

Does anyone know any alternative chargers that the tablet will recognize as a "Samsung" charger?


neb

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  #2464429 17-Apr-2020 19:16
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kandjc:

I have an older Samsung tablet that uses a 5V 2Amp 10W charger that I have mislaid.

 

My ipad has a 5.2V 2.4Amp 12W charger. 
Can I use that for charging the Samsung or is it too different?

 

 

It should work, but both Apple and Samsung have historically used nonstandard signalling mechanisms to enable higher-current charging so depending on the age of one or both you may only be able to use it for low-power charging.

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  #2464464 17-Apr-2020 22:19
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You can fool it into charging at full rate by using a resistor bridge in the circuit. I made a special lead to allow charging from an aircraft usb port. You should be able to find details online. I just recently threw my lead away because I no longer need it.

neb

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  #2464465 17-Apr-2020 22:24
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larknz: You can fool it into charging at full rate by using a resistor bridge in the circuit. I made a special lead to allow charging from an aircraft usb port. You should be able to find details online. I just recently threw my lead away because I no longer need it.

 

 

Just make sure that you need the older Samsung-specific signalling, not newer USB-C. The older ones from memory put specific voltages on the USB data lines which you can do by bridging onto them with resistors, see @larknz's comment.



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Master Geek


  #2464595 18-Apr-2020 10:52
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Thankyou to all who have offered advice.

 

The ipad charger does not work, nor do any other phone chargers I have around.

 

It would appear from research that the Samsung charger has some specific internal wiring that the tablet needs to recognise.

 

So I now have to find a genuine Samsung P-7510 charger.

 

Thankyou.


 
 
 
 


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Ultimate Geek

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  #2464664 18-Apr-2020 12:33
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If you look at my previous post the resistor bridge should provide the voltages the tablet is looking for.

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  #2464724 18-Apr-2020 13:06
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kandjc: p>The ipad charger does not work, nor do any other phone chargers I have around.


It would appear from research that the Samsung charger has some specific internal wiring that the tablet needs to recognise.


So I now have to find a genuine Samsung P-7510 charger.


Thankyou.



What model tablet is it? I have a Tab S that happily charges on any usb charger that I've tried. Currently using the charger that was supplied with a Moto G5. You have proven that the cable is OK?

Edit FWIW using the Ampere app reported charge rate on the Moto Turbopower charger and the 2.4A port on a Noki charger is ~1000mA, on a Samsung 1A charger and the 1A port on the .Noki is ~600mA. My original Samsung chargers for the tablet and a S3 phone failed very quickly.

Edit 2 this post probably shows the resistors mentioned by larknz
https://android.stackexchange.com/questions/21144/how-much-power-does-a-galaxy-tab-10-1-charger-need-to-supply

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  #2464750 18-Apr-2020 14:01
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Bung:

What model tablet is it? I have a Tab S that happily charges on any usb charger that I've tried. Currently using the charger that was supplied with a Moto G5. You have proven that the cable is OK?

 

Same for my Tab S3.





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  #2464839 18-Apr-2020 14:56
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This only happens with the older Samsungs. The newer ones can use any charger.

neb

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  #2465024 18-Apr-2020 18:50
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One thing to be aware of is that many cheap no-name chargers won't charge reliably over about an amp or so (it depends on how crappy the charger is). What usually happens is that the output voltage drops as current increases, there's lots of teardowns on Youtube of chargers like this. So if you've got a sufficiently nasty charger it may not charge the tablet since at 2A the voltage may be down to 3V or something.

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