How to charge a Samsung tablet with a non-native and very long cable?

Question

Android

There is a Samsung Tab 3 tablet and native charging for it. I connect the charging, everything is ok, the charge goes relatively quickly, well, or standard, let's say so.
I use this tablet as a smart home control center. The tablet hangs on the wall in the corridor and in order to charge it, I used an 8-wire cable that goes from the basement to the corridor. The length of the cable I do not know exactly what, but at least 10 meters. In order to do the charging, I used only 2 wires, plus and minus. On the one hand, I connected to a mini USB, on the other hand, to my native Samsung charging via a regular USB. In general, to make it simpler, I just cut the native cable and assembled it back, I just used a regular cable laid in the wall. Like clearly explained.
As a result, the tablet is charging, but very slowly. Overnight 40% charge.
I tried to change the power supply itself, I used an iPhone one, from a motorola, from a Nexus tablet. The maximum charging current is 1 A. Nothing changes.
I googled a little and found information that the two remaining cables, which I did not use at all and did not connect, are able to tell the phone what it is connected to, to the computer's USB port or to charging, and the charging current changes accordingly. If the phone is connected to a computer, then the charging is artificially lowered to 500 mA.
Allegedly, if these 2 cables are shorted or connected through a resistance of 100 ohms, then the phone thinks that it is connected to the network and takes the full charge current.
In general, I shorted 2 of these cables, it did nothing. As a result, I decided to completely repeat the usual cable. Because now I have 4 wires, as in the original cable, from charging to the tablet.
But this did not change anything, charging is extremely slow. The only thing that has changed is that now the tablet does not recognize any other charge, only its original one, it does not react to the rest at all.
In general, the question is how to charge its infection normally? There is an idea to buy a more powerful charge, there is 2A, but I'm not sure of success.
Is it possible that the longer the wire, the greater the loss, and so much so?
I tried to charge another tablet, the same thing, 1 percent in half an hour, probably.
Maybe I still don’t know something about the miniUsb charger device.

Answer 1

There is something you don't know about Ohm's law (which is taught in school). The voltage loss over these ten meters becomes catastrophic. You can.
1. Raise the voltage, for example, to 24 volts, and near the tablet, lower it to 5 using a step-down (this is important!) Regulator.
2. Put a regular outlet near the tablet.

Answer 2

This tablet seems to have a 2A charge. Personally, I can say I bought a charger at 2.1A - I charged the phone very slowly with a tablet (Wexler 7id), like 0.6A charging, I tried the original charger from Huawei D2 at 2A, the tablet charges quickly. I bought a charge in a store for 2A - it burned out and charged slowly. So if 1-2A is indicated on the charger, it doesn’t mean that there are really 1-2A a lot of fakes today. Actually, there may be a problem in another, in that the cable that makes up most of it (with which you sang from both ends) has a very small current carrying capacity. Here is a cable for 5 meters (maximum current 5A) https://www.compax.ru/2-12-1-3.html . Here is a cable for 10 meters and in others there is a tendency of no more than 350-500 mA www.compax.ru/2-12-1-22.html, mb and your cable is the one in the middle that has a maximum of 350mA

Answer 3

I took a maximum of 2 meters. Longer than 3 I do not advise, there will be losses. And it’s better to take a quality one more or less, and not quite g ... I even made my own rating of the charging cables that I use. For the entire time of use, so to speak. Or rather, even multi-cables, because they all come with 3-in-1 adapters - for Apple technology, Android devices, and Type C connectors. I put https://yadi.sk/d/_ZLKLUEjCAomzg in pdf on Yandex disk and https: //cloud.mail.ru/public/G3dM/eZ2BCfifH