Charged it up and ran to the lake with my inflatable kayak. Pumped up the main section with ease then I adjusted down the pressure rating to my side walls and again pumped right to my setting without any challenges. I have pressure gauges that I measure against, and the inflation was accurate. Little leaking with removal of the hose but I think that is more the type of connection my boat has rather than the device. I paid full price would pay that again. Battery lasted two full kayak inflations with room to pump more. Display is easy to read which is more helpful than you might think.