I have the Hitachi http://www.hitachi-powertools.com.au/productdetails.aspx?Product=WR18DL(HD) does a pretty good job. Thou it wouldnt undo the wheels the other weekend, Not sure how tight they were done up from the tyre place. Also wouldnt undo the brake caliper. Unsure on battery charge. Possibly half charged. Has done other cars easily. Once the bolts were cracked with the breaker bar its handy to get the wheels nuts done quickly. Also usefull for getting the scissor lift up and down real quick.