On Tuesday, May 20, 2003, at 3:05 PM, Shahara9 at aol.com wrote: > I presently have an icebook, two years old, and am eventually going to > purchase either another 12" iBook, or perhaps a Powerbook, and am > wondering > if my extra 128 MB DIMM1/J12 SDRAM in this laptop can be used in > either of > the newer laptops. Are the batteries similar? I doubt between iBook > and > Powerbook, but older and new iBooks ? A current iBook should be able to use the RAM in your current iBook. The 15" TiBook should also be able to use that RAM. However, the new PowerBooks (12", 17") use DDR RAM, not SDRAM -- so it's completely incompatible.