Manufacturers sometimes contact me and ask me to review their products. Sometimes they send products to me for free in exchange for my review. This makes me a so-called influencer.
Most recently, someone from Cycplus noticed that I write a fair bit on bikeforums.net and asked me to review one of his company's battery-powered inflators. I agreed.
I didn't think these things would be very useful, as I like my floor pump just fine. I keep a floor pump in the home for the bikes and another in each car because sometimes a tire needs topping up. Also, my spouse once got a flat in her car, and the spare was totally deflated, so that's a bad situation.
Here are my impressions of the Cycplus A5. The price on Amazon is $47.99. Cycplus has some other, less expensive models.
First, disclosure: As I said earlier, I received this unit in consideration of writing this review.
Second, this compressor really works well. I inflated my bike tires to 90 psi. No trouble. It claims it can go to 150 psi. Then I topped up my car tires with it. Also, no trouble. One of the nicest features is that you can dial up your desired pressure, and the unit just stops when it reaches that pressure. I don't know if it can fill a car tire from empty on a single charge.
Third, the size and weight are impressive. I think it weighs slightly more than half a pound (350 grams). You could even bring it with you on your bike without making it significantly heavier.
The compressor comes with a USB charging cable and a cigarette lighter cable.
I decided to leave the unit in my spouse's car's glove compartment with a USB charging cord connected to it forever. It only charges when the car is on, so my spouse won't be draining the car's battery this way. She can now inflate her tires easily now when she needs to.
The person at the manufacturer was polite and pleasant, and our communications went very well.