I’m retired to Philippines. I bought this “XHP70.2” on Lazada for $20, and it’s some some cheap craptastic LED of course. No heatsinking. 3 unmarked blue 18650’s. It’s actually not bad and throws quite a ways. Is there any easy LED upgrade I can do to it? Or will it just be trying to polish a turd?
Personally, I would just go for XHP70.3. It’s a much better emitter and will plop right in there
If an upgrade is to be done, then XHP70.3 HI as suggested would be a good option, but make sure to get it in the right voltage.
I would personally not bother with it: depending on the drive power, without heatsinking the LED might not last for very long.
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I’m worried about it melting. It’s all plastic. Even my Alonefire H002 XHP50 zoomie gets really hot.
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I don’t think it’s worth the time/effort honestly, unless you’re just doing it for fun. Any emitter that produces enough lumens to be considered impressive in that host will probably get too hot, damage some components or the host itself. By the time you start trying to add more heatsinking into the light - might as well just spend money on an actual decent flashlight. Unless of course, like I mentioned, you’re just doing it for fun/sh*ts and giggles.
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Toss it, it isn’t worth the parts , time, and effort. Amount of work needed to make it a decent practical light would more than it would take you to build a light from a scratch. I used to modify cheap lights like that, then after half a dozen, I figured it was a waste of time, so I started building my own, from scratch, much happier with results.
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Plastic reflector, so can’t push the LED that much else it’ll melt it.
I like huuuge reflectors like that only for max throw with small emitters, even though my personal preference for usefulness is close- to medium-range flooders.
As long as the batteries hold up, I’d leave it as-is and use it for looking to see what’s hooting in the trees way out yonder.
Dunno if there’s any “driver” to speak of, other than a resistor or something, but you can swap out what’s there for a 7135 board, multiples of 350mA to get the current you want.
You can bolt/glue a flap of Al/Cu onto the back of the LED board for better dissipation… at least for a while. More thermal mass, too.
If you measure, say, 900mA from the LED right now with topped-off cells, you can probably push it to 1050mA if not 1400mA with a beefier emitter and the extra heat-sinking. Just don’t let it cook for hours.
Basically, mod it for fun, not necessity.
To mod this light you could use an extruded or forged aluminum heatsink such as the ones from wakefield, or any random one from ali express or elsewhere that’ll fit. Mount a 40mm fan to the rear of the light. Cut some slots or drill some holes around the heatsink for airflow to pass through. This solves your heat problem. Choose a driver, an LED, and a small dc-dc regulator for your fan. Hot glue is your friend for a mod like this.
It’s relatively simple, but it’s not “easy” because it ain’t going to build itself. But if you want to do it, it’ll come together fine.
I won’t toss it. For what I paid it’s fairly impressive as is. It lights up the top of this “chocolate hill” in my backyard like daytime. It’s about 300 yards away. There’s nothing further to put a beam on here in the jungle. I’ll leave it alone. Maybe get a wall of light type by Sofirn that is more fun out here.
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I’d bet it’s metal.
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Yeah, it looks like metal to me, too. 
Now you have me wondering. I just took it apart again and it is aluminum. But now that I think about it. The native muggles out here think it’s magic already. I’ll just get another light. Sofirn Q8+ maybe. No place out here where a good thrower can stretch it’s legs anyways.
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Yep, that’s the easier route.
I’m not a modder, but if your time is worth any money, buying a different light makes financial sense.
I mean, if you really want to mod the light, you can, of course–it’s your choice. 
I got similar. Metallised plastic. “Star” screws directly to the back of the plastic, no shelf or anything.
Perfectly functional, though, as long as you don’t cook it enough to melt.
Pleasant surprise if it’s actually Al. That’d be its own heatsink, lots simpler to mod.
Personally, I would go for a much (!) better heatsink first. Something, which is able to dissipate more than some watts of heat without the danger of melting anything around it.
Then a LED swap can be considered. In current state, the LED has not a long service life.
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Yes, something along those lines. That is how I moded this light a decade ago or so, still works great, but i would not even bother moding that light today, i found much better approach, part of it not limiting myself to faulty design of the host.
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Yea, that’s a wild mod. Nice going!
Yea it is basically “hold my beer” light, it also has a 20mw green laser in the handle, I even made a secret power shut off switch, so no one can turn it on besides me. That laser can really do some damage in wrong hands,
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A high powered Led will fry itself quickly without adequate heat sinking. The flashlight will overheat and maybe even burn the plastic. You could try building a heatsink but I personally wouldnt bother with such a poorly built light