Skilhunt E3A (AAA twisty) - First Look

Yeh, it was the up’n’down thing I didn’t like. Think the original SP31 had that, so gifted it away.

Just broke down and bought the nw E3A :person_facepalming:

Will report back in a few days

We need an E21A 2000~4500k 3 modes of this light,since Sofirn stopped develope.

Yes. For a cold rod it may be a really nice host but I don’t care about cold rods - and that’s why I was disappointed.
Actually for a FRP PCB light this has a pretty good thermal path, much better than f.e. DQG Tiny…but I would be wary about putting a 10440 in it.

My sample of LH351B was extremely green. Two layers of –1/4 green until a proper swap is made. Maybe a 219b is in order here…

thanks for share!

does anybody have both e3a high cri and cool white to compare beam shots? and also c01s if possible?

I just purchased the high CRI one. So i assume, it’s using LH351B with 90 CRI ? What’s the difference between LH351D and LH351B high CRI ?

Thank you, the beam shots are helpful. Any plans to test runtime on alkaline batteries? I saw an Eneloop runtime test on zeroair, but can’t find one for alkalines, except on the manufacturer’s site.

I just got the high CRI version from Amazon. This is a nice little light. I’ll be giving it to an elderly relative who needs a key-chain light but can’t figure out multiple modes.

Here is the runtime graph for what appears to be a regular/white Eneloop from ZeroAir. I don’t know if the high CRI version would be noticeably different but “about an hour” is decent for the amount of light this puts out.

Hot damn, that’s even better’n I thought! Nice flat output alllllllll the way ’til exhausted.

Now I gotta go get more? :open_mouth:

Yeah, stabilization and runtime are great, but it will destroy your eneloops because you won’t notice they are empty until they are discharged too far. Or what is the voltage when the output starts dropping? Still above 0.9 V?

If you look at the graph from zeroair, he stopped the test at 2.5 lumens.

That’s clearly far dimmer than the regulated output. The battery is listed at 0.82v at that time.

That’s not optimal for an NiMH battery, but I’m pretty sure it won’t seriously harm it. You’ll get fewer cycles out if it, but Eneloops are so robust, even a 90% reduction in cycle life would mean several years of weekly charges.

Yeah, but it’s rock-solid flat flat flat flat flat output ’til you actually watch it dim down to nothing in probably only seconds. There’s no “100lm” at startup and then a gradual constant fade as the cell wears. I like that.

Using a LFP cell in my (Xeno) E03, I get about the same thing: constant flat output for almost the entire SOC of the cell, and then a noticeable dimming, letting me know I’ve got about seconds of light left. Not a problem because I only use it around the house, so it’s not like being stranded on a dark trail with no other light.

Hmm, so I wonder if that’s because of the cell’s flat voltage, or if it’s the same with even an alkaleak…

I think I’m fresh out of alkalines to test with, but I imagine it’d look vaguely similar to the NiMH runtime curve - nice and flat. That should be a function of the boost driver providing a constant current.

Nice teardown and photos! Did you ever get round to playing with the current set resistor?

No, I forgot about it in the midst of other mods I’ve been working on. I might have to give it a shot. Are you thinking higher or lower output? Seems crazy, but I had thought about dropping the output to around 3 lumens or so just got fun (and maybe to use as a reading light).

Maybe I’ll try a runtime as is and then one higher and one lower. We’ll see!

I’m thinking the same as you! I don’t have one yet though, bought too much recently :blush:

Ok, I just found an alkaline and I’m doing a runtime with it now while I top up some NiMH. :+1:

Is there a proof that Eneloops can be destroyed by discharging in a flashlight? I assumed that was the case until I got into a discussion with someone doubting it. I have no idea. Never got one below 0.8 V. They suffered, but I’m not sure if that’s not just because of their mileage.