We have two inflatable SUPs that take 15 psi. The first time out, I inflated them both with the included hand pumps. That was the last time I did that! I immediately went online and looked for the best "bang for the buck" inflator, which turned out to be a Sevylor unit...
We have two inflatable SUPs that take 15 psi. The first time out, I inflated them both with the included hand pumps. That was the last time I did that! I immediately went online and looked for the best "bang for the buck" inflator, which turned out to be a Sevylor unit for about $60. I''ve used it for about two months and it works well, but it is noisy and must be plugged into a 12v outlet. It only has a single stage, so just getting to the point where the SUP has shape takes nearly 3 minutes. Total time for the Sevylor is about 7:50 (to 15 psi).
I''ve tried running the Sevylor off a Jackery 500 battery pack, but the startup current is too high and it won''t work, so I have to plug it into my car. Unfortunately the car battery is a bit weak, so I have to run my car while pumping up two SUPs otherwise the car battery goes dead. Its quite a production just to pump up a couple of SUPs! Thus I went looking for something battery-powered and found this unit. It is more than twice the price of the Sevylor unit.
With this Dr. Meter unit, it is SUPER easy, since it is battery-powered. I can pump up both SUPs and deflate both of them on a single charge and still have about 40% power left. It charges easily from a wall outlet (though it is a bit slow to charge). I can carry it to the water''s edge and pump up the SUPs there, instead of worrying about laying them down on the hot pavement in a crowded beach parking lot.
One thing that surprised me is that despite being a two-stage pump, this unit is actually SLOWER than the budget-priced Sevylor unit. As you can see from the diagram, total inflation time for a Body Glove Performer (Costco Special) SUP is 7:50 with the Sevylor and 8:40 for this Dr. Meter pump. The first stage goes surprisingly fast, and gives the impression that it will be MUCH faster than the Sevylor. However, once the pressure starts to build, the Dr. Meter pump starts to bog down, and you can see the flattening of the curve as it passes the 10 psi mark (whereas the Sevylor just keeps on chugging). Also, during the first stage, the Dr. Meter is very quiet, but once the second stage kicks in, it is just as loud as the Sevylor.
The overall quality of this unit is vastly superior to the Sevylor - everything from the unit itself to the quality of the hoses and attachments are all much better. The included case is also really nice - it is padded ad has a handle on top and a shoulder strap to make it very easy to carry. Also, despite being battery powered, it is not overly heavy.
Another big advantage of this unit is that once the pump stops, it stops AT 15 psi and the readout stays at 15 psi, with no leaking. With the Sevylor, it stops at 15psi, but then instantly leaks down to about 14.5 before you can detach the hose from the SUP, so you never really get a complete fill. The Sevylor maxes out at 15 psi whereas the Dr. Meter goes to 16 psi.
And finally the Dr. Meter can be used to *completely* deflate the SUP by just switching the hose to the other outlet. This is a feature that the Sevylor doesn''t have at all, and is quite handy when you want the SUP to pack down as small as possible.