08-16-2015, 08:03 PM
Battery guts are pretty easy to make if you have the outside cardboard box and connector. Some people make their own connectors and print their own cardboard.
Can you read the Philco battery number? The battery looks small, but you can still probably fit enough 9 volt batteries in to make the high voltage section. I've also used AAA and AA cells in series to make the high voltage if there is enough room. Lifetime of 9 volt cells is not too bad, but if you have enough room to use AA alkalines in series for the high voltage, you get very long battery life--more than the original.
I've used AA, C, and D cells in series to make the filament supply section, depending on how much room I have.
Can you read the Philco battery number? The battery looks small, but you can still probably fit enough 9 volt batteries in to make the high voltage section. I've also used AAA and AA cells in series to make the high voltage if there is enough room. Lifetime of 9 volt cells is not too bad, but if you have enough room to use AA alkalines in series for the high voltage, you get very long battery life--more than the original.
I've used AA, C, and D cells in series to make the filament supply section, depending on how much room I have.
John Honeycutt
