New*HP pavilion ZD7000 latop battery
[6600mAh,14.80V]New and high quality HP Laptop Battery Brand.
http://cheap-laptop-battery.co.uk/hp-pavilion-zd7000-battery.htm
I really want a heavy-duty set of tools, cordless by preference. I had a set from Coleman, but the batteries wouldn't run any of the tools for more than a few minutes. There are comparable sets made by Makita, De-Walt, and others that look good, too, but Milwaukee is the toughest.