my LED light from a vintage automotive lamp

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LowpowerD said:
I'd like a progress report too.
Very good work, sir. Could you run two 9v batteries in series for 18v?

You could.

I'll post a progress report soon. I made the battery pack and it is indeed brighter. I left it on for 4 hours and got tired of waiting for the light to dim. It gets warm but not excessively so. Batteries stay cool. I have purchased a suitable vintage tail light, an old Miller dynamo from England. That will get the LED treatment next.
 

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