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
IF THERE IS NO NEEDLE
If you do not have a special needle for inflating nipple of a volleyball or soccer ball, take advantage of... ordinary medicine dropper with an elongated spout. Rubber part is a bit cut...
Brake light controller
A vehicle’s electrical system can be supplemented with a device whose schematic and wiring are within reach of even a beginner. This device is a controller whose value is clear: its status...
