AA cells can be installed in a socket of larger diameter than itself, if you wrap it in several layers of paper, foam or any other available material suitable for this purpose. For example, a galvanic cell AAA can be installed in a standard socket AA.
If the length of the socket is greater than the length of a galvanic cell between their respective contacts should be inserted in a folded several times a piece of aluminum foil.
Recommend to read
AFTER THE GLUE SYRINGE
Dear editors, in your journal often publishes interesting technical solutions; offer you. Adhesive pen after consuming the content is not just packaging, and the original design for...
IF THERE IS NO AUTOMATION
Most modern refrigerators include automatic defrosting system. In the old it is not. So every time you have to wait until melt all the ice of the freezer, and periodically pour the water...