The controller works as described, however the USB charging is low, far from the 2A they promise (between 0.4A and .07A). A Panasonic 2,100 mAh battery took about three hours to charge from 3.9V to 4.09V (not even 4.2V). At least the controller works without battery and with the USB connected.
The minimum consumption is 0.01A and the maximum 1.5A