Emergency battery

thingiverse

This will enable you to use equipment that needs a large power cell, by using the usual AA type batteries. These casings hold the batteries centrally to marry up with the electrical contacts. There are two .stl files. One for U2 and second for U11 batteries. They obviously do not have the same power output as the larger batteries, but it does allow the equipment to be used. I use Ni-MI rechargeables which seem to work longer that I thought they would. No special printing requirements. (I used .4mm layers for a quick print)