You guys thinking of going to 16v check out this site
http://www.batteriesareus.com/index....x&cPath=65_146
12/16v lite weight deal for 190.00 looks like a great deal
Also make sure everything you have is good for upto 19v's before swapping... I'll be sticking with 12v again because of this. hmmm now what 12v to buy ?!?