Powerful Jump Starter Versus Air Pump: Tested harbor Freight Deal We were skeptical when we picked up the AVAPOW JP3 Jump Starter on a Harbor Freight deal, but the combo of 3000A power and a 150-PSI air compressor exceeded our expectations. Charged up in under 30 minutes with its PD 30W port, it revived a dead battery in mere seconds with a simple clamp connection. The air pump, though louder than we anticipated, proved surprisingly efficient, filling a 32-inch tire in less than a minute. Yes, the shell looks brushed but feels thin, but the functional balance between jump-starting and inflation is undeniable. For the price, the AVAPOW JP3 delivers reliable reassurance on the road, keeping us prepared for both dead batteries and flat tires. It’s not without minor flaws, but its versatility makes it a worthy addition to our roadside toolkit.