Double usb to 1 usb mini cable powercore 20000

Is there a dual usb to single usb mini to charge a anker Power core 20000 to decrease the time it takes. Or is this not a valid solution.

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One Y cable would split the current and chare at the same speed as one cable.

To get the fastest charge use two chargers and two cables or one charger with multiple usb type a ports capable of outputting 2.4 amps per port and two cables.

The fastest way to charge your powerbank is with a quick charge 3.0 charger and a good cable.

At first i thought you had a dual input PowerCore…