Got an anwer from ShenZhen E-Young Technology Co.,ltd (powewholsale)
1 set shipped by hkpost would be. USD97.87
probably the cheapest by now?
Got an anwer from ShenZhen E-Young Technology Co.,ltd (powewholsale)
1 set shipped by hkpost would be. USD97.87
probably the cheapest by now?
When you measure 2A @ tailcap while battery are about 3.8V per cell.
2 A x (3.8V + 3.8V = 7.6V) = 15.2W
Driver efficiency?
Remember that This bezel is deep?
1500± OTF
I can get it on e-bay to Australia for $83 dollars. Light only, which I don’t mind.
Light only, for that price - i think is too much. For 15$ more you get extra orings batteries and charger
Pok, shouldnt that be about 30w for 3*t6?
That’s why i always say, just get a light meter and be done with it.
Welcome to the monkey house, nowell!
further…
15.2W x .85 = 12.16W (passing through the driver assuming its 80% efficient)
12.16W / 3xml = 4.05W/xml
4.05W / 3.4Vf = 1.19A per emitter
1.19A ~ 460 lumens from each xml “(from this thread here)”:Results: Testing XM-L, MC-E, SST-50, and XP-G emitters **Updated**
460L x 3 = 1380 bulb lumens
Factor in reflective losses + refractive losses + bezel obstruction I would expect output to be around 1000 Lumens OTF. Possibly less OTF if the deep bezel blocks more side spill than I suspect. Possibly less OTF if its a spring floating design with no thermal path, although at this low of a drive current I would not expect it to warm that much… definitely not enough heat to initiate thermal dimming on a cold start.
^
^
I saw XM-L table somewhere.
1.0A about 3.0Vf
1.5A about 3.1Vf
2.0A about 3.2Vf
3.0A about 3.3Vf
For current @ tailcap, maybe you will wait for the other to correct this.
Rectification:
Battery : 7.2V and I : 4A
With internal Converter: 3.6V and 4A
(Absolute) is # 1.3 A by LED
Where approximately 500 lumens per LED
Total 1500 Lumens
It is very far from 4000 Lumens announced
FR
Rectification :
Batteries 7.2V Courant 2A
Avec convertisseur : 3.6V et 4A
Soit (en absolu) 1.3A par LED
D’ou environ 500 lumens par LED (1500 Lumens en tout)
on est très loin de 4000 Lumens annoncé
Prochain message sur ATTENTION internal O-Rings !
here :
Flux aprox. and real control autonomy
- SSC P7 (900 Lumens) 50mn
- MJ-850 (1200Lumens) 2h 20mn
- MJ-878 (2200 Lumens) 1h 30mn
Conditions:
charged batteries + rest 24 hours
Looks like the thing is eating the O-rings.
I think that putting some silicone grease on the threads once a month will solve the problem.
So are you saying you measured it at 1800 lumens? Love the Magicshine!! But for over $260! Was surprised to see you could get it at Dealextreme.
I have a TR-DF003 where all joints ls body are HS! (4)
I have just changed by my personal seals and well sealed
I dont’ like to correct you, but most readers here might not understand the expression “HS”.
Just for those wondering about it. It means “out of order” (hors-service) and it’s a common expression for things that are not working, crap, badly worn or just good for the recycling bin.
Thanks for the clarification. I had no idea what he meant by that.
Seeing some beam shots would be great too.
Changing a driver will give us more current per led?
What Is the max lumens we can get from the light changing to better driver?