I bought it on amazon. IDK the max PSI, but I'm pretty sure its higher than I'll need. It is cordless, has a wall and a car charger. I've had it for less than 24 hours so I cant really give you a great review of it, but here's the amazon link: http://www.amazon.com/gp/product/B002MUAUJM/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1