forum threadItsSoCheap | Staff posted Today 07:25 AM
Item 1 of 4
Item 1 of 4
forum threadItsSoCheap | Staff posted Today 07:25 AM
100k Lumens PHIXTON Rechargeable LED Flashlight $10.99 + Free Shipping w/ Prime or on $35+
$11
$19
42% offAmazon
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No way it comes anywhere near the stated output. Ever. 100% waste of money.
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https://www.mklights.co
The most efficient commercially available LEDs are about 200 lumens per watt. At 100,000 lumens, this flashlight would require at least 500W of power. The battery that comes with this appears to be a 26650 battery with a capacity of 6000mAh and a nominal voltage of 3.6V, so 21.6Wh. 21.6W*h / 500W = .043hr runtime, or 2.5 min. That's actually a really long time to run this LED at 500W considering that they only advertise a 30W rating.
https://solartechonline
Another way to look at it is efficiency. A 100% efficient light source generates about 680 lumens per watt. If this can output 100,000 lumens by only using 30W then this light is about 490% efficient. You could make a perpetual light machine by shining this light at a solar panel that's 20.4% efficient. With a super efficient 25% solar panel this combination would be a net generator of electricity, solving the world's energy crisis. All that for $10.99? How can you pass that up?
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