AstroAI S8 Air Jump Starter with Air Compressor,3000A Peak Car Battery Jump Starter Portable (9.0 Gas/6.5L Diesel) with 150PSI Cordless Auto-Shutoff Tire Inflator, 12V Battery Charger Booster(Red)

I purchased this jump starter in March 2025. I kept it fully charged and stored it in my trunk for emergencies. Yesterday, I finally needed it to start a car that I hadn’t turned on for two months during the winter, and it worked perfectly. Impressively, the unit still showed 100% battery life even after sitting unused for such a long time. I haven’t tested the tire inflation feature yet, but I plan to try it soon. The design is simple, compact, and easy to store. Most importantly, it delivered plenty of power when I needed it. I'm very satisfied with this purchase.

I fully charged this unit when I received it (14 days ago), and it was on the way home last night that my car alerted for low tire pressure. I used the AstroAI S8 for the first time today to bring 8 tires up to their cold PSI recommendation. I found it very easy to attach and detach the hose/connector to all eight auto tires, with only a split second of any air loss. All eight tires needed the same setting (32 PSI cold), and I didn't have to keep adjusting the unit. I would say that the typical tire needed to increase about 8 PSI, and I timed one in my head at just under a minute to inflate to the proper level. I held the unit in hand to keep it off the wet concrete, and it never got warm enough to make me think it might get too hot. As for the battery, it was still at least 50% when I plugged it back in to recharge. Keep in mind that the unit sat 14 days, filled eight tires at about 8 PSI each, and that took it down to the 50-60% range. I've not yet needed to use it for a jump start, but I've gained some confidence based on other reviews and the ease of use for auto tire inflating.

Good quality compact size easy to move around and use.

Great little thing. Used it to jump a dead battery and worked quick. Also filled two tires with air. The battery goes pretty quick when using the tire psi function, which is why 4 stars. Im sure u would have to have charging capabilities close after adding air to tires. Yes would buy again.

This little unit is actually pretty amazing. It works exactly like described. The battery life is pretty sufficient. You just need to kind of charge it once a month to make sure you have more than enough battery life. You set it to your tires’ psi and then it stops just like the ones at the gas station. I haven’t had to use it for a disabled car yet, but I’m sure it’ll work fine. It’s crazy convenient.

Love it great value for the money works really good.

Excellent product. It is amazing how this little device can start a large V8 with a dead battery!!!

Keep charged, but reliable jumpstarter