Has anyone seen a runtime test of the Emisar DT8K with nichia 519a 4000k

I’ve seen the e21 2800k test on zero air with a 18650 3000k mah battery

I’d like to know how much runtime would I get with Nichian519a 4000k and a 5000 mah battery, and does the light run flat at medium and high modes before I spend money.

I already own lights that can do 300 lumens

I’m looking for something with these LEDs that can handle 500-800 lumens without burning up

Not sure about the DT8K but most of Hanks lights with the boost driver will easily sustain 500+ lm with the 4000K 519As. Especially if You go for the D4K with the new Lume driver