Q: Does it work with stand up paddle board with the proper halkey roberts valve?
A: Sorry, it doesn't.
Q: Can it be used for vacuum storage bags or pool toys? And does it have a reverse to deflate vacuum storage bags or pool toys?
A: Unfortunately, it not so suitable for inflation of vacuum storage bags and pool toys. Deflation neither.
Q: Does it work with balloons?
A: No, it doesn't. It can mainly pump up items with high pressure requirements. E.g: bike tires, motor.
Q: Does it read the current preasure?
A: Yes, the display will read the current pressure when you connect it to the tire and turn on the unit.
Q: What is the actual length of the air hose?
A: Including the silver part that attaches to the tire, air hoses of A2A3A4A5 are 6.25 inches. While A7A8's are 11.22 inches. Hope this helps.
Q: Does it come with a protective case?
A: There is a gray drawstring bag inside the box, except the model A5&A7.
Q: Does each model come with a bike bracket?
A: No. Only the model A2 does.
Q: Which nozzle do I use to fill my tires?
A: There is no attachment needed for tires with Schrader valve. But you need to use the valve adapter for Presta valve tires.
Q: What is the true mAh of the battery? 500 mAh seems to be inaccurate (way too low).
A: Model A2A3A4A5 are 500 mAh with 4 batteries. And model A7A8 are 2600 mAh with two batteries.
Q: Does each model come with a car charger?
A: Only the model A5 does.
Q: Is there a special way to charge A7 or A8? No matter what usb C cable I use, no light comes on and it won't charge.
A: Please be carefull on what charger you use. A7 or A8 does not support charging with a C-C cable.
Q: Can this device be left in the car during summer or winter? Can it handle hot or cold temperature?
A: Hello, the operating temperature of this electric air pump is -10℃ ~ +60℃
Q: Is it waterproof?
A: Hello, it is moderately waterproof and can be used normally in light rain. But it can not be immersed in water or in heavy rainstorm weather.
Q: Does each model can be used as a power bank?
A: No, only model A2 and A5 do.
Q: Is it only good to pump one flat car tire before it needs to recharge?
A: Model A2A3A4A5 could fill up a fully flat car tire with one single full charge. And model A7A8 could inflate 2-3 empty car tires.
Q: Can you replace the hose with one that has a lever clamp?
A: No, it is not interchangeable. It is made so well that basically no air is lost if you twist it off in a steady smooth motion.