Tom_E
(Tom E)
July 27, 2015, 1:12am
73
The EFEST 10440's are far better - mtnelectronics.com EFEST . RMM shows the HKJ's comparisons, comparator here: http://lygte-info.dk/review/batteries2012/CommonSmallcomparator.php . The UltraFire's in capacity, stay with the EFEST up til 0.5A, but higher, the UltraFire's fade away.... I still have a bunch of UltraFire's, but really prefer the EFEST's. There's not much choice out there though.
cabfrank
(cabfrank)
July 27, 2015, 1:30am
74
That doesn’t surprise me at all. I would get the efests without a second thought if I needed some new ones. Good link and info.
merikgvr4
(merikgvr4)
July 27, 2015, 3:05am
75
What is a good charger for these? I am using a nitecore I4
Tom_E
(Tom E)
July 27, 2015, 12:00pm
76
That's always a problem with these very low capacity cells. The best charger is one with a 200-250 mA charge rate. The UltraFire's, even though they say 600 mAh are actually about 350 mAh, so normally you want to charge at or below 1/2 the capacity (0.5C), though some say up to 1C.
I use the OPUS BT-3100 for these now, but the XTAR MC0 looks like a nice quality, cheap charger for this: mtnelectronics MC0 for $5.90 . Also the "VP" series of XTAR's Richard sells will work fine. Richard is listing these chargers the right way - he won't say a charger supports 10440's unless it supports a low enough level. Others advertise chargers supporting 10440's just because they can physycally fit -- big difference...
merikgvr4
(merikgvr4)
July 27, 2015, 6:43pm
77
That’s always a problem with these very low capacity cells. The best charger is one with a 200-250 mA charge rate. The UltraFire’s, even though they say 600 mAh are actually about 350 mAh, so normally you want to charge at or below 1/2 the capacity (0.5C), though some say up to 1C.
I use the OPUS BT-3100 for these now, but the XTAR MC0 looks like a nice quality, cheap charger for this: mtnelectronics MC0 for $5.90 . Also the “VP” series of XTAR’s Richard sells will work fine. Richard is listing these chargers the right way - he won’t say a charger supports 10440’s unless it supports a low enough level. Others advertise chargers supporting 10440’s just because they can physycally fit — big difference…
Thanks Tom E, I already ordered the MC0 from gearbest as they have a sale going on. Will order the efest batteries from mtnelectronics.
ReManG
(ReManG)
August 9, 2015, 10:50pm
78
If you have a charger that can charge LiFePO4, I have been using the Soshine LiFePO4 AAA’s in my buckle with a good increase in brightness over Alkaline. Not as much as a 10440, but runs cooler too… Just an idea.
BanL
(BanL)
August 13, 2015, 9:35am
79
BanL
(BanL)
August 19, 2015, 3:00pm
80
New Cree XHP-70 5-Mode LED Flashlight is arrived to KD
SKU S024364 $54.55
5-Mode (Hi > Med > Lo > Str > SOS)
Can be used for 2 x 18650 / 2 x 26650 or 3 x 18650 / 3 x 26650. Extension Tube is included.
Jubeldum
(Jubeldum)
August 31, 2015, 5:46am
81
BanL, you forgot one.
SKU S024408 $40.04
Mode Arrangement: Hi > Mid > Low > Strobe > SOS
Battery Configurations: 3 x 18650 / 3 x 26650 Li-ion batteries
”
Cree XHP50 White 2000 Lumens 5-Mode LED Flashlight - Black (3 x 18650 / 3 x 26650)“:http://www.kaidomain.com/product/details.S024408
M4D_M4X
(M4D M4X)
August 31, 2015, 8:25am
82
what actual bins are the xhp50?
or are 6500k and 5500k of same brightness?
BanL
(BanL)
August 31, 2015, 2:11pm
83
This XHP50 flashlight is 6000K to 6500K.
M4D_M4X
(M4D M4X)
August 31, 2015, 2:15pm
84
i asked CS and got very fast response:
Hi Martin,
Thanks for your inquiry.
For XHP50 5500k (S024311), it is J4 3C.
For XHP50 6500k (S024311), it is J4 1C.
Our XHP70 is N4 6000K to 6500K. According to the Cree specification, N4 is better than N2.
Or do you have any preference?
If you have any question, please feel free to contact me. Thanks
@ our Pros:
how good are the hxp50s?
BanL
(BanL)
August 31, 2015, 3:37pm
85
Sorry for some typo mistake from us.
Cree XHP50 6500k (S024312 ), it is J4 1C
Rolz
(Rolz)
September 4, 2015, 7:59am
86
Just noticed that Kaidomain has some new XPL HI Stars.
Cree XP-L HI U4 7A2 3000K-3500K LED Emitters with 20mm x 1.6mm Copper Base
http://www.kaidomain.com/product/details.S024424
Cree XP-L HI U4 7A2 3000K-3500K LED Emitters with 16mm x 1mm Copper Base
http://www.kaidomain.com/product/details.S024423
marcl
(marcl)
September 4, 2015, 11:24am
87
Could you tell what the point of a u4 bin is? Surely that’s a step back from the xml2.
Marc.
hank
(hank)
September 4, 2015, 4:51pm
88
> what the point of a u4 bin is?
That wouldn’t be the main target of the production run.
Binning takes the output of the run and sorts them by color and efficiency.
The odd bins collect the emitters that came out a bit off the target; they get sold cheap by discounters to people willing to buy small lots or single items.
https://www.google.com/search?q=led+binning
During production, LEDs will vary in colour, flux and forward voltage and this is also true for products from the same batch. The differences are significant and therefore LEDs are measured and delivered to the market in subclasses or groups called bins and this process of segregating LEDs is called binning. So a particular bin may contain LEDs, which emit light within a range of wavelength, range of flux values and also the range of forward voltage that can be applied safely to the LEDs….
… In the case of a high quality LED luminaire product, proper binning will ensure all the LEDs used have no visible differences in flux (brightness) or colour. However, in case of a failure it has to be ensured that the new or replacement LED has to come from the same bin as the LED which has failed.
marcl
(marcl)
September 5, 2015, 6:37am
89
hank:
> what the point of a u4 bin is?
That wouldn’t be the main target of the production run.
Binning takes the output of the run and sorts them by color and efficiency.
The odd bins collect the emitters that came out a bit off the target; they get sold cheap by discounters to people willing to buy small lots or single items.
led binning - Google Search
During production, LEDs will vary in colour, flux and forward voltage and this is also true for products from the same batch. The differences are significant and therefore LEDs are measured and delivered to the market in subclasses or groups called bins and this process of segregating LEDs is called binning. So a particular bin may contain LEDs, which emit light within a range of wavelength, range of flux values and also the range of forward voltage that can be applied safely to the LEDs….
… In the case of a high quality LED luminaire product, proper binning will ensure all the LEDs used have no visible differences in flux (brightness) or colour. However, in case of a failure it has to be ensured that the new or replacement LED has to come from the same bin as the LED which has failed.
Lighting Academy | Philips lighting
But the u4 bin is not as bright as an xml2 u2?
Marc.
Blinky1
(Blinky1)
September 5, 2015, 10:34am
90
U4 is brighter than U2… but they are not as bright as the V-bins.
marcl
(marcl)
September 5, 2015, 11:46am
91
I’m seeing 869 lumens for the XPL U4 VS 1119 lumens for the XML2 U2.
I don’t see the point in the XPL at this bin.
Please tell me if I am missing something as I have no experience with the XPL.
Marc
Blinky1
(Blinky1)
September 5, 2015, 11:02pm
92
marcl:
I’m seeing 869 lumens for the XPL U4 VS 1119 lumens for the XML2 U2.
I don’t see the point in the XPL at this bin.
Please tell me if I am missing something as I have no experience with the XPL.
Marc
Hmm… seems that I was wrong. I assumed, that the XPL and XML2 bins would be equal, since the die size is the same. They are not.
at 3A, XPL U4 should give 869-920 lumens, and XML2 U2 1119-1193.
XM-L2 U2 is comparable to XP-L V4 or V5 in brightness.