Any way to eliminate the key?

[bluefxstc]

I agree that the headlight is normally not a concern for affecting range, but I think there is something off in the example. The halogen headlight plus incandescent tailight are at most about 70 watts total. At 13 volts this is about 5-1/2 amps not 50. If you carry this value though the Amp*Hour calculation against battery capacity it shows that it is even less of an issue.

You are corrrect. Should have said 50 watts, not amps. Sorry for the confusion.

 

[magatta]

I get it now. Drove a hour and a half to ride with a buddy and lost my keys someway along the way