Mike, You are correct. It's almost the same. they did change one thing 3 months after I bought mine. the height of the top section. I kicked myself after. lol
As for electric battery impacts. They work awesome! sockets, bit drivers etc. love them. Only down side I really have is they don't have an open chuck. so you always have to have 1/4", 3/8", 1/2" drive bits to work with the impact.