Enter my RC plane experience:
If they are NiCads, then discharging almost completely, and charging completely is the best darn thing you can do to them.
NiMH and Lithiums are a little diferent, and I have no experience with them.
Love my 18V Mil, but my 14.4V DeWalt does have better battery life. I think Milwaukee's universal chargers are a little iffy and don't charge as well as the DeWalt. I regularly have to remove a battery, then put it back on (without using it) up to three or four times before the battery is charged to capacity. I think the charger is getting fooled into thinking that the batteries are only 14.4V or something and are cutting the charge short.
Could just be an isolated incident though.
I like the Mil Drill, but the Mil Sawzall doesn't have an E-brake and the DeWalt does.
But it is a gen-u-ine Sawzall.
[This message has been edited by sparky66wv (edited 06-15-2002).]