From:CJ e-mail:Mathsci-A-hotmail.com
Subject:Another Battery Date:Fri Aug 31 23:05:13 2012
All,

I was out looking at batteries for some work stuff and saw this one -

UB6130
6 volt.
13 amp.
5.4"H x 2.8"W x 4.2"D

http://www.amazon.com/Universal-Power-Group-86452-Electronics/dp/B003X3SFG

It looks very close to the dimensions of the H-3 to me and iis has13 Ah. Not a battery for judging, but maybe another alternative?

Since I have not used one of these and obviously all of you know much more than I do I'll leave it to you if this might work...

CY