Ok, I measured the volts/amps using the Autel RC connected to the TRIPLTEK with and without the TRIPLTEK resistor cable.
Yes, it does limit charging to basically nothing. Here are the results:
TRIPLTEK tablet connected to a fast charger:
4.84v / 1.51A with resistor cable: 4.78v / 0.00A
TRIPLTEK wall charger that comes in the box:
4.91v / 1.93A with resistor cable: 4.87v / 0.00A
Autel
EVO II RC:
5.06v / 0.51A with TRIPLTEK resistor cable: 5.01v / 0.00A
EVO I RC:
5.05v / 0.55A to 0.63A with TRIPLTEK resistor cable: 4.96v / 0.01A
For the testing I checked just straight charging with the tablet off, then on, then on with the explorer app running, and at full brightness. No difference on power draw at full brightness, and very, very slight increase with the tablet on, connected running the explorer app.