Nothgrin

I have these old camera batteries that are 3.7v Li-poly and would like to use them on a 3v circuit. Could I just use a resistor?

What would be the easiest way to tone it down?

If I answered a question for someone and they deleted the question, I get the points for my answer. But does that answer still count as a non best answer? or is it completely removed from the statistics?

For example I have a fan that is able to push out 252 cubic feet per minute of air and it has a 11.2 cm diameter. What other measurements would I need to find the thrust force of a fan? Or how would I go about measuring it if thats a better way? I was thinking of linking a scale to a large flat cardboard and having the scale measure the force of the fan on the cardboard but it may not be very accurate.

I am trying to build a R/C hovercraft and I need to find some fans that can push a good amount of air. With enough thrust I should be able to support the fan/batteries/RC housing and the chassis but I am just trying to put numbers into perspective to see my weight limit.