Woowind BP188 Bike Pump

Found this to be a piece of junk. I have a road bike with presta valves. I’ve inflated tires with presta valves before so I know how they work. I’m 100% positive I used the presta valve attachment and that I used this product correctly. I even read the entire manual and watched several YouTube videos because I thought I was crazy during this process. For reference, both of my bike tires were completely flat. Started with my back tire. Screwed the attachment and hose on tightly, ran the machine and the tire began filling. I had it set to 110psi. After a while the tire became rock solid but my machine still only read 60psi. I switched it to bars to be sure and continued filling a bit longer. The goal was 8 bar. It still only read 4.1 bar and never wavered. Then the device ran out of battery and died (after only a few minutes of use, and 1 tire in). Charged it back up. Back tire seemed good enough despite the off reading so I moved on to the front. Tightly attached it to that presta valve, set the goal to 110psi… it ran for about 2 seconds before saying “done” and automatically stopped. I unattached, then reattached very tightly and the same thing happened again (tire still completely flat). Because it automatically cuts off when it reaches it goal pressure, there was no way to make it keep going even though it mistook a total flat for 110psi. Almost forgot to mention. The device gets SO hot. I saw this in other reviews and it’s true. It was extremely hot while running, and was even hotter while it was charging (charging cord was scalding too). Scary. Had to borrow a neighbors bike pump for my front tire. This product is a joke. Glad I didn’t need it while I was out on a ride.