flwatersaver, great information. Is it kosher for you to post this info in the electrical section of this site, in addition to the sponsor section of the site that this thread is currently in? Also, are you able to do a few more tests on the duracell and the D3100, specifically the time it takes for a fully charged XSPower D3100 and the Duracell to go from a fully charged state to 10.5 volts under the following continuous loads:
50 amp
100 amp
150 amp
200 amp
250 amp