On 2011 Mar 10, at 11:59 AM, Tony Duell wrote:
  where are the 3.6v batteries available? 
 There is a type of lithium cell that's 3.6V. I seem to rememebr that
 some
 Macs used it. 
 
Yes, they (many Macs) did, they are half-AA size, but are rather
expensive and relatively difficult to obtain.