XP-G2 OK @ 3.7V ?

vt2nv · 2018-06-18T22:23:19.000Z

XP-G2 OK @ 3.7V ?

Thanks.

toddcshoe · 2018-06-18T22:36:13.000Z

I know I have a Sofirn SF14 with the XP-G2 in it and I run 14500’s in it. They are a 3.7v LiIon.

vt2nv · 2018-06-18T22:50:52.000Z

Thank you, very much appreciated.

toddcshoe:

I know I have a Sofirn SF14 with the XP-G2 in it and I run 14500’s in it. They are a 3.7v LiIon.

gchart · 2018-06-18T23:55:30.000Z

According to Cree specs the XP-G2 has a forward voltage of 2.8V at 0.35A and 3.1V at 1.5A.

Generally you’ll have some sort of resistance or current regulation between the battery and LED to “burn off” the excess voltage (as heat).

Enderman · 2018-06-19T05:24:41.000Z

Depends on the cooling it has.

pommie · 2018-06-19T05:55:55.000Z

Given adequate cooling it will handle the voltage of a fully charged Li-ion = 4.2V, although it will be pulling ~5A but with voltage drop and resistance you would be lucky to see 3.5A @ 3.5V

Cheers David