I have a 9,6V 2000mAh Ni-Mh battery (with charger) and I was wondering how to use it to build a portable spotlight (= flashlight for video.)
I need 30 to 60 minutes of battery so if I remember my lessons from high school I have approximately 18 W of power available. Most LEDs seem to come in 3/6/12/24V etc. I saw some videos where they convert 5 V to 12 V with boosters so my guess is they exist for 9,6 V battery.
So my question is what kind of booster would you recommend for my spotlight? (I don’t need a dimmer and I guess I only need passive cooling.)