Re: I don’t know

[Don]

I had a rechargeable battery pack made for mine, but am thinking a 7.5 volt power supply would be the best bet. I think you will enjoy having this tool, yours looks to be in nice condition….And, if it doesn’t work, the guys here have the knowledge to fix it up easily…
These testers are worth every penny, great for coil output and leakage tests….Takes the guess work out of condenser inspections as well…
Tom Manley helped educate me on using mine properly….