Hi Jason - The D-Tap Cable steps down the voltage to 5V at 2A (enough to charge an ipad)
The transmitter and receiver both consume roughly 1A of power - I like to use higher amperage capable because sometimes when at the outer limits of transmission power consumption can spike,and if you are way above tolerances you are guaranteed to have a "better experience" - that being said you can run it with a 1A battery - but sometimes 1A is not really 1A (like a lot of the time with eBay batteries unfortunately)



