Seamax Best Portable SUP16DB Electric Air Pump Max 16PSI, Double Stage built for Fast Speed and High Pressure


EASY TO POWER: Thanks to the intelligent control system and its newly designed power control unit, the air pump is great to use with the inflatable boat, SUP, and tent. This DC electric air pump can be powered by its built-in 6AH lithium battery after charging or through a standard extremal 12V charger socket in a vehicle. It can quickly reach and automatically stop at the user's pre-set air pressure. The deflation port helps to quickly deflate the air chamber for easy folding and compact size storage;

NEW AND SMART: Our Seamax pump has AI smart monitoring feature to help the user reach the highest efficiency pumping. When the pump starts to inflate, the computer monitors the real-time pressure every second, based on our Self-Developed smart pump formula program, it can find the pump the best timing to switch to 2nd The computer also monitors the pump’s internal temperature and continued working time, Auto Stop Protection feature has been built-in to protect your pump.

MORE COMPATIBLE: The valve connector with the hose is suitable for SUPs equipped with HR (Halkey-Roberts), Bravo, Naru, or similar type air valves. This kind of air valve has a turning pin or pressing down the pin in the middle to control the valve’s Open & Closed position. 3 silicon O-Rings to choose from and keep the connection best airtight. More valve adaptors are available and even fit the Leafield C7 or D7 air valve.

MORE COMPACT AND MORE FEATURES: Fully support Inflation and Deflation; 1st stage max speed 350L/min; 2nd stage max speed 70L/min, Pressure setting increments 0.5 PSI and Max 16PSI. Air hose with Screw-in style adaptors provides perfect airtight. Built-in LED flashlight and 2x USB 5V charging ports, 6Lbs Super lightweight, the pump comes with a storage box to keep the travel charger and car 12Vadadptor, 2 ways to use the pump and charge the battery. A great design travel case to keep the pump and accessories in order. 

NOTE OF FIRST TIME USE: Fully charge the battery before use. One charge can inflate up to 3x SUPs or 3x 12ft Inflatable Boat. Don’t leave the pump in the dusty ground when pumping.  The Power Button needs to Press & Hold for 2 seconds to turn on the air pump.  The pump will go to sleep mode (turn off) when no use for 2 minutes. 

SUPPORT AND NOT SUPPORT: This pump can support all Inflatable SUPs, inflatable boats, and Inflatable Kites. but our pump may not support the inflatable kayak with the Boston air valve except customize the end fitting. 


More Convenience - With a built-in flashlight and 2 USB charging ports, it can be used in a dark environment and conveniently helps to charge mobile devices. It serves as an all-in-one solution for outdoor sports players. 

Energy Saving - The power Button needs to Press & Hold for 2 seconds to turn on the pump.  The pump will go to sleep mode (turn off) when no use for 2 minutes. 

Multiple Power Source – Operate the pump by using its built-in 6AH 12V lithium battery, connect the pump’s power adapter to a vehicle's 12V DC socket, Or through our coming gauge 10 power clip to connect your 12V car/boat battery directly. 

Air Tight Connection - Connect the end of the flexible conduit adaptor of the air hose with the air pump inflation port, and twist clockwise to tighten it. Insert the other end of the air hose into the supported product's air valve and twist clockwise to connect. 

Easy Pressure Adjustment - Press the air pressure unit toggle button [PSI/BAR] to select or switch the preferred unit (PSI or BAR). Press the Increase Air Pressure button [+] or Decrease Air Pressure button [-] to set the desired target pressure value matching the inflatable product's air pressure requirement from 0.5 PSI to 16 PSI (1PSI = 0.0689BAR). The pressure setting increment is 0.5 PSI. 

Inflation - Press the ON/OFF Power Button to start the pump. The Increase Air Pressure button [+] or Decrease Air Pressure Button [-] can be pressed to adjust the target air pressure value. Pressing the Power Button again to stop pumping manually. During the inflating process, the LCD screen displays the inflatable product’s real-time air pressure. 

Deflation – First open the air valve to let the chamber leak out the air by itself. Simply switch the air hose to the pump deflation port before connecting the hose to the chamber.  Press the Power Button and let the pump run only at its 1stage (turbofan). After the pump suck out the air from the chamber. You can manually stop the pump and disconnect the air hose. You may want to keep the air valve in a closed position when packing up. 


Important Notice
Should NOT leave the pump working on the dusty ground during your operation. Since the pump's working vibration will bring up the dusty air from the bottom, when much dust goes into the air pump, the dust will make the pump's piston grease dry out faster than normal. Then the pump piston ring will overheat and be damaged, and your pump may not be able to provide good high pressure very shortly. Dust Damage will have no warranty coverage. Please keep it working inside your car or better place it on top of your SUP. We have provided ultra-long wire and hose for your convenience. 

We do not suggest to over deflate your SUP since it could cause SUP seam damage or pump overheat damage. Keep the valve in an open position when you roll it up. But Don't forget the close the air valve before the next pumping. 

Something You Should Know

The below guide will help you understand the pump in your application better. and when you hear the beep sound warning and the pump stop working, you can look at its LCD screen to check its status, and you can keep the user manual closed enough. After a few uses of this pump, you should be able to work well with it and enjoy its features.

Seamax pump has a temperature sensor built-in, the pump will stop when it gets overheated. When the pump is forced to stop overheating, you may not be able to operate it right the way, The LED screen will show you the Error Message. and you can feel the pump is hot. The pump can be operated again when the internal average temperate drops below 80°C / 176°F. So you get to wait for it to cold down. or you can try disconnecting it from the SUP/chamber, press the Power ON button to run the pump in the air, its 1st stage fast airflow will help its cool down faster. you may want to run it for 1 minute, and another 5 minutes regular cool down before the next use.

Pump’s allowed working range is 9-15V. The screen voltage reading will show you the real-time voltage when pumping. this is very important to know during your pumping if you connect the pump to external power. If the voltage is too high or too low, the pump won’t be able to turn on. 


Pro version air pump has the temperature sensor and voltage meter built in, once the temperature is too high over 80°C or voltage is out of range (9-15V), the pump will stop and beep sound warning, plus screen flash for a few seconds.  But since the pump stop, the temperature or voltage reading may get back to normal range very shortly, so the user may not be able to realize this pump self-protection. We suggest when you see the pump stop un-normally, you can stay closer to the pump and watch its screen when starting again. the screen can always show the real-time voltage, it will help you to find out the problem. On some European cars, we may not suggest starting the engine when pumping, since those car 12V sockets may give over 15V.  We also do not recommend starting the engine if the pump voltage reading can be over 10V during pumping. Since some old car generators may affect the pump sensor and digital control module.

Special Feature of Seamax SUP Double Stage Air Pump

This air pump has the 1st Stage and 2nd Stage, when the pump starts from zero pressure, it will first start its 1st stage – turbofan unit, and it will turn into 2nd stage – Piston unit. 1st stage can blow up the air fast up to 350L per minute. Since we want the pump to maximize the 1st stage performance, so it can maximum shortage the waiting time during your pumping. Our best formula from lab testing is -  Pump will continue to check the pressure 10 times per second after reach 0.65 PSI. When the pressure difference is less than 0.05 PSI in a continuous 3 seconds, then the pump will know its first stage has already reached its maximum ability, so it cannot pump more air into the chamber, then it gets to switch to the 2nd stage to continue the pumping. 1st Stage max pressure output should be over 1 PSI.

This feature will work great when the air chamber is big enough and with a regular marine air valve (H.R., Bravo, or Leafield). It can be suitable for all sport inflatable boats over 7ft that are equipped with an outboard motor and all inflatable SUPs. The individual air chamber of those products is all over 0.15CBM (5 Cubic Foot) and more. But when the air chamber is too small and less than 0.1 CBM (3.5 Cubic Foot), the reading from the pressure sensor will be jumping more when the pump max output is reached, so the pump may never detect a good signal of “pressure difference less than 0.05 PSI”.  In this case, the pump cannot switch to 2nd stage by itself. Since you may use this pump on a different product other than a sport boat or SUP. You can do the below operation to let the pump switch to the 2nd stage.

Stop the air pump manually, don’t need to disconnect the power. And you can restart the pump right away. When the pump detects pressure over 0.65 PSI from the air hose at starting. And if the read pressure doesn’t reach the set pressure value. The pump will start its 2ndstage directly.You don’t have to stop the pump, during its pumping at 1ststage, you can press and hold the “Power ON” button for 3 seconds. Then the pump will be forced to switch to 2ndAfter you see the 2ndstage started, you can release your finger from the button.If this is the SUP20MAX air pump, there is a 2ndstage button to press on the panel. It can directly turn on its 2ndMany inflatable products are using a small kind of air valve.  A small adaptor will bring lots of backpressures to the air pump and affect the pressure reading. You may have to force start the 2ndstage only. For example some of the inflatable Kayak, lifebuoy, and many water toys. That product may not be able to use the pump Auto Switch feature. FYI, A less expensive blower air pump without a pressure sensor and program control may even work better.

It may not be our pump defects if you see the pump won’t jump to the 2nd stage by itself. Please check our instructions carefully. Understanding our special program in its firmware is very important. Other than that, the air hose connects air leaking may cause a similar issue. So you get to make sure the connection is tight enough and choose the right size O ring. If you stop the pump and see the pressure reading dropping fast or/and hear the air leaking sound beside the hose. Then the connection may not be perfect yet. Use 5% liquid soapy water will help you to find air leaking easier.


Take the guesswork out of inflation thanks to the Seamax air pump’s smart-sensing pressure valve! Watch the pressure change in real time and set it to a cutoff point so it will stop automatically.


If you’re out and about, it can be inconvenient to charge your devices. Get your phone or other devices juiced up courtesy of the dual USB chargers, wherever you are.


Internal Patent Structure with UNIQUE FACS provide ultra fast cooling performance under 3-digit temperature condition


Fit Leafield C7 & D7 air valve.