How To Calculate Amps For Led Strip Lights. V f x Drive Current in Amps Using the 6 XPG2 LEDs from above we can find our watts. Heres the general formula.
Lets say you are using 85m of LED strip. Very quick video just to help RV boat owners see how many amps draw down from the 12v battery system for a 5mtr long LED strip light. The correct power supply needed for your LED lighting project is easy to calculate.
R is the resistance measured in Ohms Ω.
The correct power supply needed for your LED lighting project is easy to calculate. The Feit 4 LED shop lights draw about 03amps each according to the manufacturer. For example the Waveform FilmGrade LED strip power draw is 55 watts per foot. Enter total footage or bulb count.

