Question regarding charging behavior on my SM-P905V

[PsycloneTW]

All,

I am a new owner of a used SM-P905V purchased on Amazon. It's a replacement for my old Note 10.1 2012 edition that died some time ago. I am curious as to what the expected behavior is with this tablet specifically pertaining to charging the device. The purchase didn't come with it's own charger so I have been using the Samsung adaptive fast charger that came with my Note 5 phone, the EP-TA20JWEUSTA model specifically. Now, my old tablet came with it's own proprietary charger and nothing I've found seems to indicate the Note Pro needs a proprietary charger.

So with the above in mind, I am trying to establish the known, expected behavior as it pertains to charging the device. I've observed that the battery will drain if I am using the tablet at anything greater than the halfway mark on the screen brightness slider but seemingly only if the device is below 100% charge when I start using it. It seems that if the device is at 100 full charge and plugged in, I can use it indefinitely while plugged in. Additionally, it seems to charge at a normal pace when it is sitting unused and plugged in.

So, is this what everyone's experience is in general? Would this indicate a need for a battery replacement? Is there a proprietary charger that would offer better charging rates? I have installed a charging monitor app and noticed that the output fluctuates greatly between 40ma and 1300ma when it's sitting idle and charging.

I have cleared the cache, which seemed to help but my expectation is that I should be able use this device while plugged in, regardless of activity/screen brightness and expect that it would charge the battery rather than drain it.

Device is full stock, unrooted.

Any insight is appreciated.

 

[ShadowLea]

Sounds normal to me.

The problem with tablets like this is that the screen is LCD(instead of AMOLED, which would cost a fortune) and massive. Which means it uses so much power that all the charger can do while you're using it is keep it level. Lower brightness means less drain.

On top of that the hardware is also quite powerful, which drains it even further.

The original NotePro Charger is identical to the Note 3 N9005 charger and the S5 G900F charger. (I've got all three, same product number and specs.)

Also note that Qualcomm Fast Charge, which comes on the Snapdragon versions of the NotePro, requires a USB3.0 cable.

Original NotePro charger specs:
EP-TA10EWE
5.3V 2.0A

The charger that came with the Note 5(and Note 4) has a lower voltage rating, which impacts charging speed. It's 5.0V 2.0A.

(This one came with the German P905)

 

[PsycloneTW]

Thanks for the info. Does .3v really make that big of a difference? I was using the usb 3.0 cable at first then switched to the micro usb cable that came with the phone, I thought the cable could handle it. I'll switch back tonight and try it. Do you know what the US model number is for the above charger. All of the equivalent replacements I can find on Amazon are 5.0V @ 2a.

 

[Beut]

All,

The purchase didn't come with it's own charger so I have been using the Samsung adaptive fast charger that came with my Note 5 phone, the EP-TA20JWEUSTA model specifically. Now, my old tablet came with it's own proprietary charger and nothing I've found seems to indicate the Note Pro needs a proprietary charger.
I have installed a charging monitor app and noticed that the output fluctuates greatly between 40ma and 1300ma when it's sitting idle and charging.

.

It doesn't matter if you're using 5 volts/2 Amps or 5.3 volts/ 2 Amps adapter as the charging current is almost the same: around 1.7 Amps.
However, incorrect USB charging cable will draw less current although it's USB 3 cable, so the important is buying the USB 3 cable designed for this model. It usually is larger in diameter so it can draw more current. If you get around 1 Amps, your USB cable is the wrong one unless the tablet is almost fully charged. Under 90% battery, the charging current should be around 1.7 Amps.
Here is the 5.3 volts adapter

Then I'm using 5 Volts/2 Amps adapter, the charging current is almost the same

However, the charging current is less when using the wrong USB 3 cable

So the key is buying the USB cable specifically designed for the Note Pro 12.2 inches. In above picture, the USB 3 cable is smaller in cable size which is for phone, draws only 1 Amp current. You can use the micro USB too, as charging is the same as USB 3 cable which has only faster speed for data transfer but this micro USB 2 cable must have a rate at 2 Amps, micro USB for phone only draws 1 Amp at max.
This is a micro USB charging cable

 

[PsycloneTW]

It doesn't matter if you're using 5 volts/2 Amps or 5.3 volts/ 2 Amps adapter as the charging current is almost the same: around 1.7 Amps.
However, incorrect USB charging cable will draw less current although it's USB 3 cable, so the important is buying the USB 3 cable designed for this model. It usually is larger in diameter so it can draw more current. If you get around 1 Amps, your USB cable is the wrong one unless the tablet is almost fully charged. Under 90% battery, the charging current should be around 1.7 Amps.
Here is the 5.3 volts adapter

Then I'm using 5 Volts/2 Amps adapter, the charging current is almost the same

However, the charging current is less when using the wrong USB 3 cable

So the key is buying the USB cable specifically designed for the Note Pro 12.2 inches. In above picture, the USB 3 cable is smaller in cable size which is for phone, draws only 1 Amp current. You can use the micro USB too, as charging is the same as USB 3 cable which has only faster speed for data transfer but this micro USB 2 cable must have a rate at 2 Amps, micro USB for phone only draws 1 Amp at max.
This is a micro USB charging cable

Any idea where to find an authentic USB 3.0 cable? I did buy this tablet used and it came with a usb 3.0 cable that *looks* legit in that it is noticeably heavier duty than a standard microusb cable and resembles both of the cables that you show in your pictures, you'll agree there is a very slight difference in appearance between the authentic and the non authentic USB 3.0 cable. One might only be able to tell the difference between them if they were side by side.

I have a regular microusb cable that came with my Note 5. The adaptive fast charger does output 2A. Is it a safe/accurate assumption to think that this microusb cable would be able to support 2A for the Note 12.2?

If not, can you link me to where I could purchase a cable that meets the charging requirements?

 

[Beut]

Any idea where to find an authentic USB 3.0 cable? I did buy this tablet used and it came with a usb 3.0 cable that *looks* legit in that it is noticeably heavier duty than a standard microusb cable and resembles both of the cables that you show in your pictures, you'll agree there is a very slight difference in appearance between the authentic and the non authentic USB 3.0 cable. One might only be able to tell the difference between them if they were side by side.

I have a regular microusb cable that came with my Note 5. The adaptive fast charger does output 2A. Is it a safe/accurate assumption to think that this microusb cable would be able to support 2A for the Note 12.2?

If not, can you link me to where I could purchase a cable that meets the charging requirements?

The micro USB is working fine as the USB 3 cable has the same rate of 2 Amps, it's only faster by data transfer because it's USB 3. If you're looking closely, the portion for charging of USB 3 is the same as micro USB, the other one for data. USB 3 cable is the same as micro USB for charging but its data transfer rate is 10 times faster.

Micro USB cable must be 2 Amps cable, it's usually larger than the 1 Amp cable by size.
However, if you want USB 3 cable, try this one
https://www.amazon.com/Samsung-Sync...8&keywords=usb+cable+for+galaxy+note+pro+12.2