To be clear, you want the light to be USB-C rechargeable rather than the cell? I could be wrong, but I thought the Thrunite mentioned doesn't have a user-replaceable battery. If the light is sealed, when the cell no longer holds charge or puts out amps, the light is done.
I always recommend Convoy S2+
though the store is currently out of stock and in the midst of Chinese New Year (which should end in a few days to a week I think). Not USB-C rechargeable, but S2+ owners never cease raving about how bright and decent it is, with constant current driver and Nichia HiCRI LED options available, and absurdly low price.
I have never seen a USB-C rechargeable battery, though I expect they are coming, micro USB rechargeable cells
are common. They're expensive, though, and it almost isn't worth the convenience, because for a few bucks more you can get a charger and a fistful of conventional cells.
Found one in 21700
. The Dual Channel Emisar DK4 21700
is a great light by all accounts, if you care about color temperature and tint, can configure for two different color temperatures and tints run by independent channels that can even be mixed for even more color temperatures and tints, and if configured the right way (which requires research, but I believe it is by choosing Nichia E21A emitters), the driver will be constant current. Programmable smooth ramping driver which will include moonlight light levels that can be accessed quickly by programming it in memory. It's a floody quad LED, the pocket thrower
will be more what you want, but, again no USB-C charging, but this 18650 cell
does have USB-C charging (though sold out, and I can't speak to the quality of the cell).
There's a Streamlight ProTac HL-X package
that comes with a micro USB rechargeable 18650. It's 1000Lm and also runs on 2xCR123A.
But, again, that's one cell. I suppose a light with a built-in charger rather than a cell with a built in charger is probably more ideal. I just hate every one I have seen in the last 20 minutes searching for them. IMO, the more features added to a flashlight that have nothing to do with light, the junkier the flashlight is.
I'm not really helping, am I? Good luck in your search.
I kept looking and found a USB-C rechargeable flashlight
that I don't hate so much, and a review