This charger is advertised as 2.4A but in reality, he did not even offer half!
I own a Samsung Galaxy tablet (which requires 2.1A to operate while charging) and do not rely on it !!!
And if that magazine ad 2x1.2A to reach 2.4A, do not expect anything, that does not work either.
A simple low-cost USB charger will be more effective.
Now, this is perhaps a vice operation.
I expect a reaction in this case the dealer ...