Work Light

rwm said:
Painful. The Dewalts are $10. Hey, do you have an old tool that fits the batteries? You could cut the bottom off and use it as the adapter. I did that with a broken Dewalt drill.
Robert
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Nope, all mine are still going strong:)

Maybe this is an excuse to learn 3D printing....

John
 
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These things are too bright on 20v! Thinking about a voltage regulator.
Robert
 
Try them on a car battery or 12 volt adapter. They still put out a hellish amount of light. :)
 
NCjeeper said:
Interesting. I wonder how fast they drain the battery down before a recharge is needed.
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A 20v 4 Ah battery is 80 what hours , so a 10w led should go for 8h minus the efficiency loss of the driver circuit

That is an epic torch life :)
 
stupoty said:
the "buck boost" regulators can be had very cheaply on ebay and are quite efficient.
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Yes- I have one. Already tested and it works great. My light will have 2 settings. Power save and Ludicrous. By my calculations the power save mode should last 80 hours!
BTW- the smaller lights I am using would make great tool lights. I may mount one on my drill press.
Robert
 
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Prototype number 1:

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On the low setting, I have adjusted this to draw 50mA. You can do the math with a 4 AH battery. 4/.05=infinity hours.

Robert
 
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