Toyota Hilux problem

I have a toyota, I completely download the battery in minutes, floor the accelerator and the engine lowers its revolutions abruptly.

Could it be a current leak per alternator ??? It will be possible that after starting the engine, stopping it, starting the battery again?

Possible the current is being grounded is to verify ground connections

It is easy to walk the vehicle and measures the load that the alternator throws, with the help of a tester, to measures that you accelerate the load must be greater not less, the other thing that can happen is that the battery is in cut or in very poor condition, it is unlikely that it is discharged immediately and that the residual load is layers of giving game, I suppose that you already check the state of the terminals and those things?

It is true, you must check how much your alternator loads, when rpm upload the battery load voltage will

up Example
voltage in idle 14v
lights, radio, air conditioning, windshield clean 13.5V
Total difference 0.5v <1V
but never less than 13V if it is lower do the maintenance of your alternator

only battery land?