^^^ As an example: an 18650 powered light here using 1.05A driver and 5%, 30%, 100% modes, when paired with say a 3200 mAh cell:
low: 61h, around 16 lumens (plenty for closeup / in-tent activity)
med: 10h, around 100 lumens (plenty for most everything else)
high: 3h, around 300 lumens (nice to have, but
personally I hardly ever 'need' that much light)
There's only 72h in 3 days :laughing: and most of those hours are in daylight. So you can see where this is going: go easy on the high mode, take a high capacity 18650 + one or 2 spares to be sure (all fully charged before leaving), and this would easily do the job. Situations like this are
THE reason I'm normally much more interested in how lower modes are spaced on a light (moonlight mode jay!
), and whether highest mode puts out a useful amount of lumens, vs. having a 1000+ lumen pocket rocket that steps down from turbo 3 minutes in. Such turbo modes are just pointless gimmick imho. Useful low modes + long runtimes is where it's at.
As for color temperature: cool white LEDs are everywhere. So if you have the choice, pick a neutral white! If only to experience the difference. If you prefer cool
er tints, color temperature in 5000...5500K range might be just right for you (but even 'warmer', say around 4000...4500K wouldn't hurt). Warm tints <3500K are nice for indoor use but not ideal for outdoors.
For those lights you're eyeing: any driver choices for those? (links to seller's page would be nice). "More lumens = better" only holds for flashlight collectors :naughty: NOT for real-world use.