I have owned 3 of these units and the air compressor has failed in all 3 units. They are great when they work, but have proven to be unreliable at least related to the air compressor feature.

I bought this 2 years ago. Have used it several times, kept it changed and not over charged this unit. I went to use it the other day and it was dead. Tried to put some charge in it and will NOT charge. JUNK !!!!!!!

My Husband got this product less than a year ago today 9/13/2025 I went out and put the charger on my truck battery and the negative post started to smoke. Then the when I turn the charger on it wouldn't turn off. I have video. It's been running now for over an hour and still not turned off. I don't know how to turn it off. It's on compressor and will not turn off. It will not charge my battery. It won't do anything but sit and fill out air through the compressor

I've had it for about 5 months and my fatmax has been good to me. I did the initial charge for 2 days and I charge it once a month for a day. I have only used it for my tires (because of slow leak) and I have also used it to charge devices during a storm. So far, so good

Had this power station for less than 1 year. After charging about once per month, the unit will no longer charge. Just acts like nothing happens when plugged in with an extension cord and the voltage meter doesn't go up. I've tried different cords and different wall sockets, but the device will no longer charge.

I purchased this BRAND NEW over 2 years ago (now past warranty), and was subsequently given the exact same model as a gift - ALSO Brand New. NEITHER OF THEM WORKED right out of the box!!! I procrastinated in returning them so now the warranty has expired and they are both sitting in my garage. I can't just trash them because of environmental laws, so I'm SOL. Any suggestions?

This has been a nice unit until last night. After i boosted off my lawn mower i plugged it in to recharge. It started beeping and would not stop. Also, the charge indicator bars were not moving like they used to when plugged in. The 6 buttons on the front stopped responding. I'm not sure what happened that made it go crazy but I would not recommend buying one due to the way everything quit working. I expected more from Stanley/Black&Decker/Mac Tools. With a company THAT big, with so many resources, they should have made a better product.

While it worked within the warranty period, albeit only a couple of times, after a couple of years the unit failed. Won't charge, won't start a dead battery. It appears to work, but, either the internal battery has failed, or, the charging mechanism, or both. Do, in fact, stay away

The air compressor is no better than a $5 hand pump

Quick delivery. Worked good to fill tires. Have not used it to start car yet.