I have several new Samsung 30q 18650 flat-top batteries, so, I need a light that uses these. This is for general purpose use and I would like something inexpensive. Say, not more than $20-$25. Main use is my gf walks through the backyard each night to close the chicken coop door, lol. While I'm wishing, if it's stronger than 500 lumens, that's a bonus; we also sometimes spotlight the 1.5 acre backyard for deer, lol. Zoomable is a plus.