COAST XP14R 4500 Lumen USB-C Rechargeable LED Flashlight

In my search for flashlights I went to lowes.com, because I choose certain retailers for certain things - LOWE'S and Home Depot for flashlights, Academy for athletic footwear, Amazon and Wal-Mart for most everything else, and so on - and I was used to cell-battery flashlights as everyone else was, but as I thought about more powerful flashlights, I began to notice that sometimes the most powerful flashlights are the ones that have rechargeable batteries...and at the time the most powerful flashlight I had was a couple of 180 lumens GoGreen The Bull Flashlights, one of which has become rusted inside the battery compartment far beyond a thorough cleaning, which didn't work. So I threw that one out, kept the other one, and decide to try other flashlights that were more powerful than GoGreen's The Bull flashlight I bought from LOWE'S some years ago. So, long story short, I bought this one, which works well, though I didn't time test the battery for each light setting. I have seen that it is bright, bery bright, and very sleek (skinny) for its design, reminding me of lasers that I had done research on years ago. Regarding lasers, first of all, the word laser stands for Light Amplification by Stimulated Emission of Radiation, and it has wide usage: in barcode scanners and disc players, powering fiber optic internet, the active tool in laser printers, construction leveling, precise cutting, engraving, welding metals, and so on. Lasers also have a wide range of power as well. Toy lasers (Class 2) operate below 1 milliwatt (mW), safe for the eyes, and do not heat up after 30 seconds of use. More powerful lasers, such as the Class 3R (1 - 5 mW) lasers