The new little NiteCore: "EZAA" Part 2

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Re: are the qc issues with the ez aa exaggerated?

What issues? Are you referring to the first batch?
Even so, all brands have qc issue at one point of time or another.
I don't hear anyone's EZ AA breaking in half or LED exploded 😉
Mine worked so beautifully that it even has 3 modes.... :crackup:
 
There's something about this light that makes it very appealing. The size, knurling, feel, and performance make it seem like a high quality tool (or toy), which it is. Best AA twisty going right now.

Geoff
 
Love mine so far. I encountered the O-ring chewing problem, but only when I used the USB battery on high. The USB battery is too short, so the threads dig into the O-ring. So if you don't use irregular sized batteries, you should be fine on that front. No problem with the Eneloops.

Guy
 
I agree - It fits well in the hand and comfortably in the pocket. I like the light a lot but would like some improvements.

I had to replace the o-ring twice already. I made sure it was lubricated but using an Energizer lithium must allow the head to be tightened to the point where the o-ring comes in contact with the threads. And this is for low mode.

I will probably be switching to a Li-ion cell when my new ones arrive (Ultrafire protected). My older AW protected flat top Li-ion cells are too long and the head seems too far out. I like the slight increase in brightness on low setting.
 
ezaacolorful.jpg


There's a pre-order now for the EZAA w/ Cree XP-E R2 LED in black, blue, and red.
 
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Nice, too bad they are R2 as that means cool. Never though I would be disappointed a light was shipping with R2. Still I like the looks of these, I can see a blue and Red joining my collection. I doubt 4Sevens will get any with the warmer neutral tints for these.
 
Is the R2 just a different tint or better emitter? I see it says 170 lumens instead of 130 on the original so I assume the latter?
 
did they change drive currents for high as well. can the xpe be driven high like the xre in the ezaa , xre in ezaa gets hot in high and with xpe small packaging might not fair better for heat
 
sygyzy said:
Is the R2 just a different tint or better emitter? I see it says 170 lumens instead of 130 on the original so I assume the latter?
Click to expand...

The R2 is the highest, generally available, Flux bin (meaning most lumens per watt). Currently these are generally available on in the cooler tints, but they are pretty nice and at higher levels I don't mind them too much. The warmer tints closer or equal to 5A may be available in the future, but right now you have to accept a Q3 or Q4 Flux Bin to get the warmer ones.

The brain adjusts, but I'm really liking the slightly warmer ones.

Update: I guess I missunderstood your question. I see the high listed as 145 on the product page, where do you see 170? I have a hard time believing we'll be getting 170 lumens out of 1 AA in a consumer light like this. I would guess the tint has also changed somewhat.
 
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XP-E R2 vs. neutral white (Q3 5A or 5B) - I posted this in another thread and thought it might be helpful/relevant here -

4Sevens Quarks are available in cool white XP-E R2 and neutral white Q3 5A
(NiteCore told me the EZaaW are mostly Q3 5B - which is the same color temperature range, but on the green side of the Planckian or Black Body Locus - BBL - 5A is on the red side) I have done side-by-side comparison beamshots of the neutral vs. cool white and to directly compare the brightness levels I removed the colors from the pics by desaturation to leave only the luminance/brightness information -

In these reviews -

Neutral White 4Sevens Quark AA Comparison Review

4Sevens Quark 123-2 Neutral, Tactical, Cool White Comparison Review

Neutral White (Warm Tinted) - Quark AA2 Neutral White Comparison Review

I'll paste the relevant beamshots here -

Neutral White 4Sevens Quark AA vs. 4Sevens Quark AA Cool White both Max NiMH
QuarkAAnW_CW.jpg
QuarkAAnW_CW2U.jpg

visually and in the beamshots these seem about the same brightness -
but the different tints makes the comparison difficult -

So I removed the colors by desaturation -
QuarkAAnW_CWdeSat.jpg
QuarkAAnW_CW2UdeSat.jpg

the levels are still "similar" with perhaps the cool white being brighter - which it should since it is an R2 as opposed to the Neutral white which is a Q3......

4Sevens Quark 123-2 Neutral vs. regular Cool White -
Quark123-2Nw_cW2.jpg
Quark123-2Nw_cW2U2.jpg

the cool white looks pretty blue in comparison - but it is only slightly on the blue side - see later comparisons. By eye these seem about the same brightness - but obviously the very different tints makes the comparison difficult

So I removed the color by deSaturation -
Quark123-2Nw_cW2deSat.jpg
Quark123-2Nw_cW2U2deSat.jpg

with the color removed by desaturation - the regular cool white does seem a bit brighter.

Neutral White (Warm Tinted) - Quark AA2 vs. regular cool white Quark AA2 - both Max and NiMH -
Quark2AAW_Quark2AA.jpg
Quark2AAW_Quark2AA2U.jpg

they seem about the same brightness level - but it is hard to tell with the different tints.

So I took those beamshots and removed the colors by desaturation -
Quark2AAW_Quark2AAdeSat.jpg
Quark2AAW_Quark2AA2UdeSat.jpg

it would appear that the regular cool white is just a bit brighter - but I certainly couldn't tell just eyeballing the beams even when side-by-side - so in practice it probably would not make much practical difference in the difference in brightness.

I also did something similar comparing the EZaaW with the current EZaa Q5 version -

NiteCore EZ AA-W (Warm tint) Comparison Review

for brightness I had a direct side-by-side comparison beamshot between the EZaaW and the regular cool white EZaa (Q5) - I'll paste it here:
NiteCore EZ AA-W vs. NiteCore EZ-AA -Q5 cool white both High NiMH
EZaaW_EZaaHi.jpg
EZaaW_EZaaHi2U.jpg

visually and in the beamshots they look pretty close in brightness.

However the very different tints makes the comparison/judgment difficult -
so I removed the color from the photos by deSaturation -
EZaaW_EZaaHidDeSat.jpg
EZaaW_EZaaHi2UdeSat.jpg

these show that the regular cool white is a just marginally brighter than the warm version - but not by much and probably would not make that much practical difference - whereas the tint can make a lot of difference in the ability to see well.

Hope that helps....
 
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