Probably will work
Ran my 242 and 245 (separately of course) off 8 - AAs
1 battery = 1 oz
holder = 0.6 oz
Total weight 8.6oz or slightly over a half a pound.
I've ran em over 8 hrs on a single charge
8 packs works fine (@ radio shack) also tie in a 9v connector since thats whats on the pack
10 packs are better but a little bit more difficult to find
Make sure you get high quality batteries
Probably NiMH rated for 2500 mAh
I particularly like Lenmar from Fry's
Heres the norcalkayak 10 - AA setup.
http://www.norcalkayakanglers.com/index.php?page=19
The voltage required is not strictly 12V, it is 9-19V
For the 1st hour I'm up @ 11V then levels off @ 10.8
Rechargeable AA are "rated" (key word) for 1.2, but quality ones normally
do more but just aren't guaranteed to do so.
That give you at least 9.6
just my 2 cents
Mike G