Tacklife LFL3A $8.99

Just go the hardware store and buy a couple of O rings for your 18650’s

Battery discharge test on my Opus 3100 at 1A was 5068mah so that’s in line with what’s stated on the battery.

Price is now 11.99

I impulse bought one as well. Is there any way to lighten the switch? Takes an insane amount of force to toggle it.

I got mine today as well, and another to give as a gift. The tail button does require a lot of force because of the stiff plastic housing. The actual mechanical switch inside the tail cap is easy to push.

Unscrew the outer cap just a quarter turn, maybe even less and the tension will lessen, will now be easy to press.
The cap covers the oring for a decent amount so unless you are planning on going underwater it should not be an issue with waterproofing.

Or, you could remove the rubber switch button and slightly trim the center nib.
By slight unscrew you can dial in the feel that you like, so that is probably the best option.
HTH

Since most of the tension resides in the tail button, unscrewing the cap a quarter turn or more does not reduce the amount of force needed. In fact you have to press harder to reach the mechanical switch inside. Trimming the center nib also is counterproductive, since it reduces the reach to the switch and doesn’t reduce the tension in the tail button.

Sorry, I see what you are saying now.
Have no idea why they would make it that stiff.
Have lots of replacement switch covers but none this wide.

Wellp, mine are supposed to be delivered tomorrow. but no notice that they were even shipped yet.

I’ll see whenever(!) I get mine, maybe puke out a coupla ideas.

I guess the upside is that accidental activation is unlikely…

I honestly can’t even switch it with my thumb. I have to use my index finger. The knurling doesn’t give me enough grip, and my hand just slips when I use my thumb.

Screw a tiny screw into the rubber switch cover to decrease the distance between it and the actual switch, maybe glue a small shim on the switch cover.

You are on the right track. I did something similar, I cut a tiny piece of cardstock paper and put it on top of the mechanical switch and screwed on the tail cap, and now it takes a fraction of the force to push it. It can easily fall out since I haven’t glued it, but my test shows that it is a viable solution.


I used very thick cardstock. If you make it long enough so it has a right fit, it will say in place even without glue.

First impression- nicely boxed, no blemishes. Something rattling around inside the battery tube. Turns out the forward retainer ring is not installed.

Charging- battery voltage 3.6 out of the box. Initial charge current .86 amps. Three hours latter light turns green, voltage 4.01, still showing .51 amp charge current. Three more hours 4.21 volt, 0 amp charge current. So if you want the max. charge you can leave it on past green without overcharging.

UI- This took me awhile to figure out.
Single press-on at high
Single press-off but only if waiting about 7 seconds. Single press before 7 sec. drops output to medium. Single press again before 7 sec. drops output to low. Another single press turns light off. Another single press back to on at high level. If you want to turn the light off before 7 sec., press and hold.

Blinkies- rapidly press 2, maybe 3 times to enter fast strobe, either from off or on. To cycle through the 3 different ones, press once to go to slow strobe. Press once again to go the SOS. Once more turns off. This also has to be done right after turn on. If you wait more than 7 sec., the light will turn off rather than cycle.

Beam- Ok outside. A couple close up rings but decent throw, wide spill. CT probably around 5500 approximately.

Switch- initially stiff but use will probably soften it up. Mine dose allow tail stand.

No means to lock out. No spare o-rings. No grease. Can run at high without overheating.

$8.99 well spent I’d say.

After further playing around with this for a second night I have found the UI to go skitzo occasionally. For instance, it with enter into strobe with a single click from on or off.

I haven’t had that happen yet, sometimes it will start off in the middle mode, I haven’t paid enough attention to figure out what I’m doing, or if it’s something else

Also some DC Fix does wonders for the beam.Not sure about the wisdom of turning it into a flooder though except that it doesn’t get hot on high while most smaller flooders do.

Mine sometimes starts on medium but I haven’t been able to replicate it consistently.

If you turn it off in medium with the press and hold method and then turn it back on it will be in medium . Usually. Seems to only do it that way the first time though. If you turn it off this way again, it comes back on in high. Quirky.