The Fenix CL25R lantern and clones can run off usb only as well. However, the CL25R can only run at about 25 or 30% power, where this Zanflare T1 can run at about 75% power using usb only. Most all flashlights with a usb port can run off usb power.
I was doubting you, so I took out my lux meter, and you are right.
Wonder why that is. The light pulls about 1A at 4V from a fresh 18650 cell. The USB port pulls about 1A at 5.22V.
I am seeing about 0.17 mA. At this rate, a 3000 mAh cell would be discharged in approx. 2 years. I would definitely remove the cell before storing the lantern long term.
How do you think a simple lantern would tell the difference between a powerbank and any other USB source?
both are intended to be widely compatible in terms of the power interface, so it would be very strange if there were any reason to reject the power source unless it were faulty enough to be well outside acceptable USB voltages.
I had made that assumption as well, but I figure why not ask. I will assume the powerbank will then also provide some charge to the 18650 inside the lantern.
Mine arrived a couple of days ago! Hurrah! I find the UI quite frustrating, I keep brightness ramping or switching between CW and NW.
Only other gripe is the brightness ramp pattern, mine goes from 3 to about 100 lumens in about 0.5 seconds, then 100 to 300 in about 4 seconds. I miss the super smooth Emisar/Narsil ramp
I don’t find it annoying. When on low, it appears to jump up to a slightly higher brightness, then smooth the rest of the way. Ramping on the way down to low appears smoother. The nice thing about it, once you get the color temp and brightness you want, it remembers it. Whether or not it’s a deal breaker is subjective and a personal opinion. Either way, the lantern is about the cost of a couple micro brew beers at your local pub.