EverReady B104

The EverReady B104 in Batrymax livery to provide 45 volt HT through a 3 pin connector.

       EverReady B104 from Bill Morris of Indianapolis.

Right click your mouse on the required section and select "Print Target" or save to your computer by selecting "Save Target As..." then print it out. Use something like Paint Shop to resize the image so that when completed the battery will form a cube with sides 3.625" x 1.625" x 4.75" (or 92mm x 38mm x 121mm).  Print onto paper first to check the size then print it onto the thickest card your printer can handle, cut around the whole shape, crease where necessary and glue all but the top flaps together. There is plenty of room inside for 5x9 volt PP3 batteries which will fit neatly with the help of a bit of expanded polystyrene padding. If you solder the battery connections together then take care as the connections only have point contacts inside and are easily damaged.

Be very careful when handling this battery pack as 45 volts can pack a powerful shock, as I found out. Also if 9 volt alkaline cells are used, due to their low internal resistance shorting the 45 volts together can generate currents of several amps which can generate energies of several hundred watts and is therefore a potential fire hazard. You have been warned!!!!