We love the Shark II by OutdoorMaster. This second generation version can blow up to 20 PSI and will suit just about any inflatable you decide to bring to the shore, not just your iSUP. Like most electric air pumps, it plugs into your car's 12V DC connector. OutdoorMaster even includes a set of nozzles to swap out which will work to inflate almost any high-pressure inflatable. This pump's ability to fill higher than 15 PSI makes it a great fit for iSUP brands like GILI and Bluefin.

We usually list cons. In the case of this SUP pump, there are no cons.

The Blowfish by StartSmart is a super handy little electric air pump for your iSUP or other inflatable toy. Complete with a two-stage pump, 12v plug connector, and multiple nozzle fittings, this SUP pump will get the job done.

We did notice that this pump struggles a bit more than others once you get above 12-13 PSI. Aside from that, we found it to perform quite admirably.

The Seamax SUP20D PRO Signature Edition electric air pump is a newly-upgraded model from the Seamax brand. Its unique feature is its dual-stage motor which monitors real-time air pressure while inflating. This allows the pump to switch to its second stage automatically for optimum pumping efficiency.

Like our other top SUP pump recommendations, the Seamax SUP20D Pro also includes multiple nozzles to ensure compatibility with all of your inflatables.

This electric SUP pump by SereneLife stand out due to its inclusion of a rechargeable battery. With it, you have the option to inflate your iSUP while plugged into a 12v socket or, if charged, anywhere and everywhere!

The tradeoff: the pump maxes out at 16 PSI. If you have a higher-end iSUP which fills to a higher PSI than 15 (which is standard), this won't get the job done. Additionally, you may see some lag and slow down from the pump as you near the 14 - 15 PSI mark.

(Works great with a SereneLife iSUP!)

This budget-friendly SUP pump by Tuomico rounds out our list of electric SUP pumps. We did not physically purchase and test this particular pump but did significant analysis before including it on our list. Nonetheless, this pump, or one of the many like it (see Disclaimer below), is a simple, generally reliable, all-around electric air pump for you iSUP or other inflatable water toys. We suspect it may not stand the test of time quite like the OutdoorMaster, nor will it pump as quickly, but as they say, you get what you pay for.