I don't understand your question. The Tempest shows on its casing an input of 15volt and 1.1amps max. I run the power bank at 16volts. Yes i KNOW its overpowering it a hair. Trust me, I was very leery to try it. But, in the end, the Tempest regulator seems to be handling the 10% overage without glitches. It MAY be generating a little excess heat, and this MAY reduce the life of the Tempest, i don't know. I do know that I have run it for hours and hours solid playback. I'm testing it as we speak, and its adding up to 440minutes or so of continuous playback on sounds mode, output volume at 75%, per battery, on a 14mos old battery pack. When i was running the tempest, the prophet AND my push ONE (push 2 is trash!)off one pack at a time, I did see a little dimming of the tempest lights and only about 2-3 hrs use. I wouldnt really recommend drawing as much as that from the pack. ( iirc you can run the pro8 at 12v.. shhhh) FWIW, I've owned 2 Tempests and both handle 16v so far. YMMV and don't send me a bill if you blow or burn something up. Side note.. The battery packs don't have an OFF button. You will have to unplug the cable from the pack, it senses when one is inserted. Kinda the only complaint I have, and im a bitchy person. Even so, not a big deal, it will sit for DAYS plugged in with the power bank indicator showing but the Tempest turned off. The solution is to have TWO of them in case one is dead from forgetting to unplug it. LiIon is finicky so its a great thing it has low shutoff and a VERY easy to read meter. Comes with a ton of adapters too. Nope, I dont work for RAV, but i hate almost everything, it's exciting to buy something I don't.