I'd think you would be able to get 3 car size batteries on that bike, one between your legs and two behind you on a rack, and maybe another where the motor and tranny was.
I had an 81 CT110 when I was 14, wish I still had it... It would only do about 53mph but that's with knobby tires and maybe a higher gear ratio, it basically ran out of revs if I can recall. I would hardly notice a 5 gallon gas tank on the back rack so I think you would be good with batteries there.
I wouldn't take it on the highway though, for short sections sure but not for miles, some stressed out person in a "cage"(car) will tire of your 47mph into a headwind and do something dumb. If you can find a quieter/slower route to work then it would be ideal.
Ian
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