I had a look at the SQAi manual. It has a system chart on the last page that shows two different external battery packs. One is for the camera battery. It appears to have a connector shaped like the holder for the four LR44 cells. This would be difficult to fabricate at home! The other has some sort of plug similar to what I use on the SQAm. I wonder if this connects to the motor drive when fitted. I think the motor drive batteries take over from the camera batteries when it is fitted. Perhaps someone else has this equipment and could clarify for you. Alex