Yes, they can handle it.
It’s a matter of opinion and preferences etcetera.
I just don’t like the idea of a modern LED doing less than 100 Lumen per Watt.
5 Amperes is excessive i.m.o.
3 Amperes is still okay for a 219C, maybe 3.5 Amperes.
But with a linear driver you run into problems when the battery can not provide the Vf at such currents.
The party is over pretty soon, even with modern low Vf LEDs.
DD FET drivers and how they’re usually implemented makes matters even worse.
Folks are limiting the current by means of thin wires and what not…
Sure, that’s what you would want when the battery is fully charged, but that’s only a short while…
Yes please.
I don’t mind if it can produce high lumens for more than seconds too (it heats up to unhealthy temperatures darn fast when you drive it hard).
For streetlightings 100 lumen/watt is pretty standard in 2016. Manufacturer are moving to 120 lumen/watt total SYSTEM lumen this year.
To get the most efficient yet as high as possible CRI to the end user, most manufacturers (including Nichia) have been decreasing chip size. Some goes to small chips meant to reduce intensity and better spread of lighting spots, some forms big COB with much higher voltage at very low current.
For example the 757, E17A, and E21A is Nichia flagship at the moment for it’s (own) record breaking efficiency while maintaining one of the highest efficiency AND CRI in the class. AFAIK, Yuji LED still has the best colour quality but suffers with it’s poor efficiency (60-70 lumen/watt is typical).
I hope you are wrong, I am worried about the same thing. The manufacturer assured me it would handle the load… I have not yet committed to using that driver, but I have to find a driver that will handle it. My triple 219C’s at around 15 amps have issues in turbo, I think it is noise spikes or current spikes in the driver and it will drop out of turbo after about 20 seconds. Battery is still up to par at that point. Have tried 30q’s, and high output Panasonic’s and get the same thing to happen. I have tried the mountain FET+1 and the A6 drivers and 1 FET+1 that I built with the Vishay FET. I may have to try one of yours as well. These 219C’s are beastly.
I did a mod with the 219B v1 4500K R9080, (few pics in what did you mod today), and like Clemence I’m not overly enthousiastic about the tint (I like more yellow with the red), but the colour contrast is super!! I will try to grow into the tint as well
Happy to take them off your hands all you 4500K 9080 haters
…
i personally like red …lots and lots of red . Green and yellow not so much .
i have a 4000K nichia jaxsman that I think has too much yellow .
///when tint snobs meet ///nobody’s happy
I’m still a big 4A and 5C fan
bold = long lead time, unreliable/uncertain availability
grey = uncertain availability or discontinued
From Maukka's test result, the 219C sm503 Ra9050 is actually Ra9080. Could be lottery though, since the R9 is rated at MINIMUM 50 points. Could be higher as tested but not guaranteed