Amazon is selling a 'must-have' $170 portable air compressor for only $50, and buyers call it 'a lifesaver' originally ...

It also features a 120-psi air compressor, ... The Stanley J5C09 can recharge electronic devices via its 12V DC outlet and comes with a carrying case, clamps, and USB cables.

The Hafuloky Portable Air Compressor is on sale for only $50. That's an amazing 71% off the regular price of $170. If this deal doesn't fill you up with joy, then not much else will.

Not all air compressors are made the same, so it's important to know the best practices for maintaining a unit based on the manufacturer's suggestions. But keeping a routine maintenance schedule ...

Its 120-psi air compressor is the same as the one on the Stanley J5C09 and can help start vehicles with up to V-8-size engines. It also has a USB port so you can charge a phone or tablet.