OutdoorMaster Shark 3 Mini

OutdoorMaster publishes two flow figures for this pump, 450 L/min and 110 L/min, and a 20 psi ceiling. Run those through the same two-stage model this site uses for every other electric pump and a 300 L board at 15 psi comes out at about 3.4 minutes: roughly two thirds of a minute to fill the shape and about two and three quarters to pressurize it.

That is the quickest computed figure on the site. The corded Shark II is 5.2 minutes on the same board and the single-stage Bravo BP12 is 3.8.

The stage labels are ours, not theirs

OutdoorMaster lists "450L/min" and "110L/min" without saying which belongs to which stage. We assign the larger to the high-volume stage and the smaller to the high-pressure one, because that is the order its own Shark II sheet uses and because no two-stage pump works the other way round. It is an assumption, and it is the only one in the figure above.

Six boards, and no way to top it up

The 74 Wh battery is rated by OutdoorMaster at six boards per charge, which is double what the discontinued Cachalot 2S managed on 57.72 Wh. On a weekend that is the difference between planning around the pump and forgetting about it.

The constraint is unchanged in shape, though: a battery pump has a finite number of inflations in it and nothing to plug into when they run out. Four days at a lake with no hookup is still an argument for carrying the 1.65 lb hand pump as well rather than instead.

At 74 Wh it sits inside the 100 Wh threshold airlines generally apply to lithium batteries in the cabin, so it is a pump you can fly with -- in hand luggage, not in the hold, and your carrier's published rule is the one that counts.

The weight is the real cost

Four point four pounds is the heaviest of the four pumps here whose makers publish a weight -- heavier than the corded Shark II at 3.6 lb, which is an odd result for the portable option, and two thirds again heavier than the 2.65 lb Cachalot 2S it effectively replaces.

That lands hardest on exactly the buyer a cordless pump is for. Against the Advanced Elements PackLite's complete 7 lb system it is a 63 percent increase in what you carry; the kayak pump page works that through. Against a 50 lb airline allowance it is affordable. Against a mile of trail it is a decision.

Who this is for

Anybody who inflates away from a car and wants it over quickly: campers, travelers, and anyone whose launch has no parking next to it. It is also the right pump if you run several boards in a session, because a six-board charge and the quickest total time here compound.

Who should skip it

Anybody who always parks at the launch should buy the corded Shark II instead: it is lighter, cheaper, has no charge to manage and no per-charge ceiling, and the extra minute and a half per board is not worth the difference. And anybody whose binding constraint is carry weight should know that the lightest cordless option in this category is no longer sold, and that 4.4 lb is what the market currently offers.