It's me again,

I've been doing some micro-controller development in the past.  I usually have an LDO or 7805 in-line on input from my battery source.  In this case, I have a high capacity Lithium Polymer battery that would easily fit inside the Chumby.  It lasts a long time (runs a remote aircraft for 40 minutes).  Would it be safe for me to solder a 9v connector and experiment -- it is 7.2 volts.  Thanks!

Alternatively, I may try to develop a charging circuit to go between the battery or add a vreg and fuse for safety.  I'll be interested to hear some thoughts.  Hope everyone is having fun.

-Loren