I think the world is your oyster with that one.
What kind of light would you like? Throw or flood?
Warm or cold color temperature?
Headlamp?
see reply aboveMany makers list lights by battery type .. you'll only have a few thousand to pick from with a 18650
Thanks for the recommendation, i'll check it outFWIW, I went with the Manker MC13 with the 18650 extension tube. Green light model which is wildlife friendly..
Mankerlight MC13
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250 and under would be the budget. I have been reading since yesterday on INR batteries because, to answer your question, no - i am not familiar with them. I bought the INR on accident and i'm getting a bit frustrated because most of the lights i'm looking at say (1x18650) but don't mention INR as a possibility.What's your budget? There really are hundreds of choices. User above wasn't being rude. Are you familiar with that battery chemistry? Lots of good reading here on proper charging and use for INR batteries. If you are savvy you could also just solder a small blob on top of the battery to make it work with your light. Don't recommend if you aren't comfortable of course.
You can also buy a small magnet and a collar to keep it centered. Had to do that once when the special buy vendor screwed up and sent flat tops instead of button tops.New wrinkle but a small one. Most makers will let you know weather either/or protected/unprotected & button/flat top batteries are needed. Then we get to odd ball proprietary (Olight) batteries. Still a flat top 18650 will have a few hundred lights to pick from today