600 lumen healamp

Szemhazai

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I've measured once one of those - it was called "Cree XR-E R2 - Zoom 240 lumens"
zoomcreexrer218650.jpg


:nana:
 

xul

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It'd have to pull at least 6W. How much runtime is that?
 

Helmut.G

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It'd have to pull at least 6W. How much runtime is that?
make that 8 W, but only if it's a top bin and is actively cooled with a very powerful thermal management system.
The claimed R5 bin (probably a lie as well, nobody would use such a high and expensive bin in a junk product like this) would require 9 W or more.
 

xul

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make that 8 W, but only if it's a top bin and is actively cooled with a very powerful thermal management system.
The claimed R5 bin (probably a lie as well, nobody would use such a high and expensive bin in a junk product like this) would require 9 W or more.
So with alkaline at 400 to 1000 mAh at 500 mA drain
and the drain being >9w/4.5v = >2A
you'd get less than 0.4/2 = 0.2 hr to 1/2 = 0.5 hr runtime, probably substantially less depending on the Peukert #.

Sicher!
 
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