I went from getting a "10% load in 2 hours" to getting a "10% load in just 30 minutes". It was not necessary to change the cable, nor the wall charger, much less change the ROM.
The solution is the following:
You have to close the application: DIGITAL INTERCOM, which is used for the Walkie Talkie function. In this way we will also solve the problem of connecting the cell phone to the computer and this is not recognized.