Ordered this light today from the S-Wing Biking Store on AliExpress; 5200 Lumen, 8000mah internal battery w/ USB charging port.
https://www.aliexpress.us/item/3256804558555808.html?spm=a2g0o.order_list.order_list_main.5.21ef1802D8xRpl&gatewayAdapt=glo2usa&_randl_shipto=US
I got the light in the mail yesterday. 11 days!
Seems pretty nice for $35! It is obnoxiously bright. Definitely isn't 5200Lumens, but its way brighter than the pair of 1000s (labeled) i've been using for MTB night riding. The LED reflectors focus the beam nicely. There is a center spot focus reflector/LED and 2 reflectors/LEDs on either side that seem more flood oriented. You can run it with just the center LED, only the outer 4 LEDs or all of them on. There is also a flashing mode that uses all the LEDs, which is probably so intense that it could cause an epileptic seizure.
The mounts seem pretty sturdy and I like that they are fold away clamps so mounting the light is a 2 minute job. You can slide them across so they'll work with tons of options.
I haven't had a chance to do an extended ride with it to test battery life. It supposedly will run 2.5 hours on the highest setting and 10hours on the lowest. If it poops out mid ride, an hour in, I will update on that.
Here's a photo of the light mounted.