FW1A with a XHP50.2 feeler list

[kiriba-ru]

@Di_Joker

@varbos

What are the pro’s and cons of an XHP50.2 versus the existing options ?

The main and decisive advantage of the XHP50/70 is that it is noticeably less heated and long runtime.
You can shine for a long time 1000Lm without stepdowns until you run out of battery and your hand burns.
According to my rough estimates, one XHP50/70 is comparable as 7-9 3535LED in modes up to 1000Lm.

One XHP50.2@1Amp have 1055 T_A lm output, 183 lm/W: Testing a Cree XHP50.2 J4 3A led
Four LH351D (@0.5Amp each) have 1124 T_A lm output, 198 lm/W: Samsung LH351D 5000k LED output test by Texas_Ace - Amazing output, low thermal resistance but high Vf