Those have been fine for me too, but I can’t say I use them a lot. I’ve had them for years without any issues though.
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.
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.
What is a good charger for these? I am using a nitecore I4
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.
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.
Bring you guys a promotion on Cree XHP-50 and Cree XP-L HI (Only LED)
Cree XP-L HI V2 1C $5.99
http://www.kaidomain.com/product/details.S024235
Cree XP-L HI V2 1B $5.99
http://www.kaidomain.com/product/details.S024340
Cree XHP50 6500K $7.31
http://www.kaidomain.com/product/details.S024312
CREE XHP50 5500K $7.31
http://www.kaidomain.com/product/details.S024311
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.
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
what actual bins are the xhp50?
or are 6500k and 5500k of same brightness?
This XHP50 flashlight is 6000K to 6500K.
i asked CS and got very fast response:
@ our Pros:
how good are the hxp50s?
Sorry for some typo mistake from us.
Cree XHP50 6500k (S024312), it is J4 1C
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
Could you tell what the point of a u4 bin is? Surely that’s a step back from the xml2.
Marc.
> 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.
But the u4 bin is not as bright as an xml2 u2?
Marc.
U4 is brighter than U2… but they are not as bright as the V-bins.
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