Dive light from E-Bay -- Great buy!!!

[redacted]

I measured the o-rings that came with my light as N2.0x21mm front and N2.0x22mm rear (one of the front o-rings was actually 1.3 x 24mm, but I think that wasn't really the right size). The channels are 27mm and 28mm diameter, so I have also ordered 2.0x26 and 2.0x27 sizes, since I think that a 1mm stretch is probably really good for these lights. I'll test these when I get the o-rings.

Well, it looks like the light relies on the stretch of a smaller o-ring reducing the cross-section, I guess.. My 27 and 28mm o-rings were a bust. I did get some 2.0x22mm o-rings for another application, but they do seem to work in the rear, but I still need something for the front (presumably 2.0x21mm, but not verified yet.) I do still recommend the o-ring store web site, I got what seems like a couple of years worth of o-rings for various lights, computers, hoses, etc, for about $18 shipped.[/QUOTE]

I suggest you take a look at some SAE o-rings. They are more readily available and a lot less expensive. Something in the range of 2-022 through 2-024 which you can probably find a Home Depot. A 2-023 is 1 & 1/16 ID and 1/16 thick which is 26.7mm ID and 1.78 mm thick.

 

[kelemvor]

It is not what everyone else got. That said I'm not going to mail a $20 dive light back to china for a refund. Either it'll work or I'll have some parts to add to my electronics goodie bag for some future project.
View attachment 208419

The switch smoothly slides front to back. I can't wait to see how the light works once the batts are charged.


I couldn't stand the wait and fired up the batteries before they were done charging. It's an extremely bright light. The slider is actually a dimmer. The slider doesn't feel like it's clicking but there are "points" as you slide where the light switches to a higher or lower brightness. As best I can tell there are 16 brightness levels.

Also the head and the back end of the light both unscrew from the main body. Both have two o-rings with some kind of lube visible on them. I'm going to try and get some more of these.

The batteries fit perfectly and there are springs at both the back end and the head end of the light to keep them nice and tight length wise. The 18650's are a prefect fit for the light width wise. Everything is nice and finished. I don't feel any burrs in any of the threading, the pieces screw together smoothly.

Not sure if it means anything but the o-rings are a brownish red.

I'll hang onto the 26650's.. might be useful in some future project, or if I get a different light when I order more.

Update. There are some little notches on the outside of the front of the head. I'm not sure why they're there but they do result in a noticeable "pattern" in the light when on land.. like in a bedroom shining the light on a wall. I took the light into a cavern a few weeks ago and the clear spring water was enough to diffuse the light so that I could not discern this pattern even when I looked for it specifically. The light produces a nice tight beam, I didn't actually measure but it is very similar to a light I have which was advertised as an 8 degree primary. Runtime on high is over 4 hours on a full charge.

I'm going to start using this light as primary. Being free of a cord going to a battery can will be quite nice. It's a great light from what I can tell. I'll still throw my edge morph 1000 core in a drysuit pocket A fourth light can't hurt, right?

 

[tcphil]

Being a sucker for lights, had to try this. For a wide beam light, it is quite bright. I was hoping with three bulbs, it would also work for a brighter center. For my dive purposes in more murky water the single bulb DGX Max and DRIS Impact stubby are both much brighter and more focused in the center.

 

[oldschoolto]

Any help on those TF batters with the PCB protection. Can I remove the Board ? Don't want to mess them up.. Jim..

 

[spoolin01]

Any help on those TF batters with the PCB protection. Can I remove the Board ? Don't want to mess them up.. Jim..

I can't see how it would hurt, but what do I know. For an informed answer, candlepowerforums is a better bet.

.... Runtime on high is over 4 hours on a full charge....

Is that 4 hours of actual beam-time? Does the brightness drop over that time?

I'm mystified by the hours-long claims for the two lights under discussion here. I don't see how the numbers add up. Mine is the version that the OP posted, and I've measured variously 2A - 4A initial drain from a fully charged battery, depending on the battery. Based on some testing with another light, I assume the difference relates to the battery's internal resistance characteristics. The drain, and light output, drops from the moment you turn the switch on, but even at an average of 2A over a two hour period, I don't believe a 26650 battery has that kind of useful capacity. With a fully charged 26650 (new blue Ultrafire with BS rating of 6000mAh), mine lasts less than an hour before it's gone very dim.

Maybe your light has current regulating circuitry - good lights do. The one I have doesn't. Maybe my light is faulty.

If anyone with one of these lights has a VOM with a 10A setting, can you take a tail cap reading of initial current drain with a fully charged battery? Just turn the torch switch to ON, then complete the connection with the VOM leads.

 

[oldschoolto]

I can't see how it would hurt, but what do I know. For an informed answer, candlepowerforums is a better bet.

That's what I think...lol...


Jim.

 

[dmg6768]

Might have to purchase a couple of these. I've bought cheap eBay lights before and in salt water anywhere the anodizing was scratched would immediately start electrolysis. Nearly half of the case is totally corroded now.

Has anyone experienced anything similar with this particular light?

Sent from my SGH-T999 using Tapatalk

 

[dberry]

10 dives in Coz with this light, including lots of swim-thrus, one twilight and another full night dive, and also 130ft deep at the Devil's Throat. No flooding, and I've had the brightest light on the boat. I wish my air would last as long as the battery. I'm happy.

Oh, and a couple of scratches in the black finish haven't corroded, but I rinse it when I'm back on the boat. YMMV.

 

[DJ457]

I bought the light and really like it. What batteries are you guys using? I'm using Samsung 26650 batteries and after about 40 minutes the light is only about 25% of it's brightness.

 

[oldschoolto]

Now we are going to see canister lights " used" for sale...

Jim...