Yes, it is the one that SD recommend. I was running the AA batteries but had the recording ready (powered on) about 30 minutes before the band came on. I got a little less than 45 minutes of the main set, which tells me the Anker never turned on, even after I pushed the button. My cable works fine with other usb-c batteries and the recorder has no issues running off other external batteries...the Anker just seems to be bricked.