I think I'd probably rig something up, maybe with a slew of rechargable 1.25v AA batteries.
A hint from someone that's killed an old 'book that way - watch the current and take the time to add a fuse and some resistors. The minute you ignore ohms law on this type of mod is the minute you're 'book dies.
If you want to travel with a battery like this, individual cells can look bad in an x-ray machine. I occasionally read wearable computing forums and there's always a story or two about a guy being pulled aside and asked about battery packs. In those cases a pre made pack like a larger cell phone battery or some camcorder batteries are a lot easier to explain than a box load of AA's Plus those tend to be Lith-Ion, which should give you a higher Ah rating for the size than NiCd or NiMH
Xplain's use of MacNews, AppleCentral and AppleExpo are not affiliated with Apple, Inc. MacTech is a registered trademark of Xplain Corporation. AppleCentral, MacNews, Xplain, "The journal of Apple technology", Apple Expo, Explain It, MacDev, MacDev-1, THINK Reference, NetProfessional, MacTech Central, MacTech Domains, MacForge, and the MacTutorMan are trademarks or service marks of Xplain Corp. Sprocket is a registered trademark of eSprocket Corp. Other trademarks and copyrights appearing in this printing or software remain the property of their respective holders.
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.