Purchased a portable air inflator so that I didn't have to plug into the car. Ended up purchasing this from amazon and the brand is BePhen. I wanted to demonstrate it inflating a basketball to 7 psi. I did not check the accuracy of the PSI, but assumed it should be roughly true. I personally used it mainly to inflate a single tire from maybe like 30psi to 35psi as it does take awhile and battery life is small. Other than that I would use it to inflate basketball as shown in the video. We'll see how long it actually will last since I have seen some last couple weeks to a year so far. If it survives 2 years, I'll be impressed. As for the purchase price, I paid $20 dollars for it so not bad.

This is an informative video of something I purchased and wanted to give a quick demo of.

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