awesafe 20PSI Electric SUP Air Pump for Inflatable Paddle Boards Boat, High Pressure, Intelligent Dual Stage Inflation 12V DC Car Connector

The media could not be loaded. I took a risk when purchasing this after every single website or article recommends the Outdoor Master as a SUP pump. I saw that this was nearly identical and offered an internal battery which was a huge win (almost seemed to good to be true). I took this out and used it to blow up a 10.5 ft & 11 ft paddelboard to 15 psi back to back and this thing handled it like a champ and was ready to do a third (When using the OutdoorMaster the pump needed a break after 2 boards even though it was using hardwire power).If you have a paddle board or any type of inflatable that requires a high PSI, you NEED this. No more sweat and tears pumping up my paddle boards. Sit back, relax and unwind Awesafe has you covered.Pros+ Portable, onboard battery makes this SUPER ideal for being able to bring paddle board or inflatable over to a grassy area instead of trying to inflate in a busy parking lot+ Quiet, compared to the OutdoorMaster, this pump was incredibly quiet. I set this up about 20 feet away from our car in a grassy area and could barley hear the hum (really nice for early paddle board sessions)+ Quick, was able to inflate a paddle board to 15psi in about 10-15 minutes.+ Lightweight, honestly this was about the same weight as the non-battery operated OutdoorMaster+ Multiple Charging Options, I personally love that I can leave this plugged into my cigarette adapter during the summer and know that this will always be charge, but I also enjoy knowing I can bring it inside and charge it through a wall outlet (charging time is about 6-10 hours from completely empty)+ Battery, I started my first board with 91% battery and it ended at 71%, after finishing the second board the battery was at 57% (this thing is seriously magical)+ Light & USB C plug-in's are awesome to have for backup batteries during camping trips!Cons- My only con which is negligible is that I think this pump takes maybe a minute or two longer compared to the OutdoorMaster, but then again I was using the battery to operate which could have had an effect.

*Update 11/2/21*I was contacted by the company and was offered a refund or a new pump if I deleted the review. I told them I was happy to test a new pump and update my review if it worked correctly, but I was told I had to delete the review first. Here is their response:"First of all, we are happy to send you two brand new replacements for electric air pumps. Our company has regulations that require you to delete your review first. Please trust us, once your review is deleted, Please send us your complete delivery address and phone number,we will arrange it for you Shipping of alternatives.:I bought two of these pumps. I tested both at home on 3 different inflatable kayaks and they worked perfectly. They also worked perfectly the second time I used them at home. So I decided they were safe to take to the lake.I started to inflate one of the kayaks and the pump would stop at 0.9 psi every time. I tried the second pump. Same thing. It stopped at 0.9 psi. Good thing I had the manual pump or the trip would've been ruined.What I discovered after troubleshooting back at home is that the pumps will not automatically switch from low pressure to high pressure if the battery level is around 50-60%. I used the battery pump and it stopped at 0.9 psi as it did before at the lake. I manually pumped up the kayak to over 1 psi and the then tried the battery pump again and it started pumping on the high pressure pump and continued to the set psi. I tried this several times with both pumps and different kayaks with the same results. I then charged both pumps to 100% and tried again. This time they worked as expected; started on the low pressure pump until 0.9 psi and then automatically switched to the high pressure pump until it reached the set psi.I give this one star because it will function as expected and fill our inflatable kayak in about 7 minutes without any effort when the battery is fully charge. I knocked off four stars because it should function this way even at 50% charge AND for the reason below:Another thing to note that makes it even more important to fully charge the pump before taking it out to the water is that the pump WILL NOT RUN ON THE WALL PLUG OR THE CAR PLUG. These are used ONLY to charge the battery.