1931 Ford Tudor quit running suddenly-no juice

[Rob Rose]

I just had the oil changed and oil pan gasket and timing gear replaced on my 31 Tudor. The battery went dead while there at shop so I charged it to 100% and went for a drive. After 15 minutes suddenly the car stopped running, no lights, no horn. I rolled to a parking space and walked home. Does anyone have any idea what it could be? prior to this I drove it hundreds of miles no issue. I'd like to trouble shoot it myself in the morning before I have it towed home. I don't think the work that was done has any bearing on the problem, perhaps something loose from the work?

Thanks