As an Alaskan I change tires/rims on two cross-over vehicles for my wife and I twice a year between our winter set and summer set. I was surprised that the instructions and label on this jack rated this as 12 volt or 24 volt power supply. It was only advertised as 12 volt so I was nervous to try this at 24 volt. I fly radio controlled aircraft and have a ton of different LiPo batteries. I plugged in a 6,000mah, 6S LiPo which specs at the 24 volt range. The LED lit up and it seem like the unit wasn't going to fry. I first lifted my cross-over front end. It lifted it with no problem in about 15-16 seconds. That time is after you've got the jack pad positioned touching the vehicle. Wow! When I lifted it at 12 volts it was a lot slower at maybe 30 seconds or longer. Then I lifted the front end of my F-150. No problem and it was about 16 seconds again for tire lift off! However; I did notice a little minor bit of what appeared to be smoke coming from the LED light area. Maybe that is just electronic breakin at its maximum volt. I couldn't feel any radiating heat from the unit. So I tested with about another half dozen complete lifts on the F-150. The jack worked flawlessly and the smoking around the LED went away. Instructions state that it needs cooling time after 10 minutes of continous use so I abided by that warning. Previously I had an electric scissor jack and it stripped its threads on the first lift. So hopefully this hydraulic unit will be durable over time. My LiPo used less than 1,000 mah on half dozen lifts. So in theory one charge I should be able to change tires/rim sets on 9 to 10 vehicles. Plenty of capacity. One thing that was a little odd is that the ball bearing wheels on the bottom of the jack make it a little awkward to position the jack pad. The wheels compress up into the unit as you apply upward lift on the vehicle. The pad positioning can move in that process as the jack can slightly tilt and roll forward or backward until the wheels fully compress. Wasn't a huge deal but be sure the pad is positioned correctly with the wheels fully compressed up. The wheels do make the unit easier to roll around on a hard floor or ashalt. Probably not recommended to lift on dirt or mud as that would gum up the wheels and the compression of the wheels into the unit. When unscrewing the pad to extend it up or down it goes quickly as the threads are large so that is a nice feature. The lowest height of the pad is not likely to accommodate low riding sedans or sport cars. I only drive AWD cross-overs and 4WD trucks so not an issue for me. The LED light is added convenience for positioning the jack. My wife's tires are stored at my garage condo so having mobile tire changing equipment is a huge plus. The jack doesn't come with a case or bag. The jack, wires and LiPO fits perfectly in my WORKPRO 16-inch Wide Mouth Tool Bag . It goes nicely with my other bag that includes Dewalt cordless impact, lugs, sockets, extensions, torque wrench, etc. for total mobility!