Cree XPG2 S4 2B - Thoughts?

[Old_Mate]

I was looking at some lumen output figures for the latest xpg2 bin and was surprised that it has now exceeded the XML T6 at 1.5 amps. This is good news if you like throw and have plenty of old xml torches. The XPG2 S4 produces 614-644 lumens versus the XML T6 546-585 lumens-wow! I just ordered a couple [2b tint] and was wondering a couple of things- 1] has anyone driven one at 3 amps? 2] What output and vf at 3amps did you record- any comments appreciated.

[AlexGT]

I have driven XP-G2 at 3 amps no problem, make sure it has direct thermal path to copper mpcb and a good heatsink, as for how bright IMHO I’d say 700-800 lumen

This is a good read

Crash-testing a XM-L2 and a XP-G2 on copper Sinkpads

I promised that I was not going to do more testing on bare leds because I do not have the equipment to guarantee accuracy of the numbers..... Ok, one more then, because I am really curious what the limits are for copper-mounted leds (mounted well and heat-sinked well), I can not find anyone who had tested that before, and as a modder I just want to know that . I borrowed a bench power supply from work that can deliver up to 40A and decided to sacrifice a XM-L2 and a XP-G2. I had bought those b…

Where did you get the S4’s, Got a link?

[Old_Mate]

@AlexGT

I have driven XP-G2 at 3 amps no problem, make sure it has direct thermal path to copper mpcb and a good heatsink, as for how bright IMHO I’d say 700-800 lumen

This is a good read

https://budgetlightforum.com/t/-/2033Where did you get the S4’s, Got a link?

Hi Alex, i got them from IOS on 20mm noctigons- I was wondering what actual vf was required and measured otf output of the S4 bin. I have a sunwayman t20cs running at 2.2amps with a noctigon dtp xpg2 S2 1d i get 650[at 30 sec] lumens otf and was wondering what the s4 can really produce at 3 amps.

[nofearek9]

anyone tested the vf on those ?

[n10sivern]

I just tested the S4. Direct drive it ran at 3.80A

[cabfrank]

Wow. Good news. Shouldn’t it make less heat than the XML, or not necessarily?

[nofearek9]

@n10sivern

I just tested the S4. Direct drive it ran at 3.80A

thanks,not bad.

[viperbart]

@n10sivern

I just tested the S4. Direct drive it ran at 3.80A

Have you measured output at these amps?
Which battery did you use?

[djozz]

@viperbart

@n10sivern

I just tested the S4. Direct drive it ran at 3.80A

Have you measured output at these amps? Which battery did you use?

I ran a XP-G2 S4 2B emitter parallel to my Nichia 219C test, voltage and bare led output results over there:

Nichia 219C, testing a 5000K 83CRI emitter, comparing with a XP-G2 S4 2B and other leds

[image] The Nichia 219C is the newest upgrade in the 219 series. The Nichia 219 leds have become famous for their 90+ CRI variants, giving better colour reproduction than any Cree or other led, but in the performance section they were way behind Cree at start. But since back then the 219 has come a long way: the 219B performed way better than the 219A, and this test shows another huge leap with the 219C. The 90+ CRI versions of the 219C are not on the market yet, but I was able to purchase th…

[viperbart]

Thanks djozz.

For some reason I totally forgot that it was on that chart.
(Night shifts really throw me off)