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As I stated above rather clearly, you have two options:INPUT from WHERE?????????????
Both cords say USB Input but it does not say where the input comes from. Car cigarette lighter? Camp ground electric box? Wall outlet 120vac?
A 120VAC to 5VDC USB "wall wart" - if you've brought a piece of electronics in the recent age, it probably came with one of these.
A 12VDC to 5VDC USB cigarette lighter plug adapter. These are the standard to charge any recent cell phone in the car.
You will connect one or the other of these to the charger base with a USB micro cable (most common) or a USB A to USB C cable.
You should be able to to find either type of power supply for around $5 (make sure they can supply 2 amps) and another $5 for the USB cable.
A standard micro USB cable connects the charger to a USB wall wart. 2.1 amp wall warts are pretty common - it shouldn't be a problem to find one.
Also, you could use a USB cigarette lighter plug to power the charger which is perfect for charging on the road.