MH20vn - Compact 18650 W/ Charging

[Skylumen]

Vinh, Did I get one or did they sell out?

You are good

 

[blackbalsam]

You are good

Thanks, Vinh. Payment sent

 

[Skylumen]

Batch 1 that I have stock is sold out. Just ordered 10 more, 7 Spot left

 

[Valmet62]

Will you have the XML2 2900K HCRI LED as an option ???

 

[Skylumen]

Will you have the XML2 2900K HCRI LED as an option ???

Sorry not anymore. I can only if you send me the LED. You can Take $15 off the price.

 

[Kevin1322]

I am not sure on this. Light would need to be timed to be sure. However adding copper is for sure a positive. Copper draw heat of the LED faster so it doesn't cook itself. The faster the LED cook itself the faster the LED become inefficient and the lumen drop right from the source even with high current still pushing through it; now just creating heat but not lumen. Resistance of heat flow create heat build up. Heat build up create resistance as electrons are now not flowing in a forward path. They spend their time just bouncing around creating frictions thus generate more heat. This is why small wires burn up as the resistance is too high. Electrons bouncing around waiting to squeeze through generate too much heat and it melts the wire. Adding a larger wire and or one made up of a less resitive material such as gold plated wires and the current flow freely. Current reading would be accurate and the expected amount of work for that current flow is again efficient. LED tint shifts as excessive heat builds up. The body of the light is made to hold the heat. The higher capacity and faster rate of heat the body accept is the better for the LED and its electronics. Letting the LED cook itself inefficiently due to bad heat transfer to the body to extend comfortable handling time and step down would be the most terrible solution to design. Some budget lights runs super cool and you wonder why. Take a look at the LED base barely and it touches the body around its edge. So much current is wasted cooking the LED while not generating efficient output. The light is a delight to handle though as there is barely any heat.

In the case of the MH20 I think the heat is monitored on the circuit not on the driver as I don't see a surface mount thermal sensor. TK61vn V4 had a circuit thermal sensor. If this is true then faster rate of heat transfer from the LED to the host has no effect with stepdown.

Circuit thermal sensor protects the driver foremost.
Host mounted thermal sensor protects the LED foremost.

That's the best explanation of heat management I've heard. Thanks Vinh!

So, you have any time to play with the light? Any more thoughts? I doubt you have any time. I suspect you have close to 60 ordered lights you are trying to get out right now!

 

[EXO1000]

Payment sent through PayPal:

MH20vn $95
XML2 U3 PDTc $15.00
Dual Tail Magnet $10.00
----------------------------

Thank you,

 

[bim13north]

I'd like to reserve one please. Payment will be sent tomorrow.
+XML2 U3 PDTc.

 

[scintillator]

I love this light,but I have so many in the works I am hesitating a little,need a day or two to see where I stand with other lights.

 

[Skylumen]

I love this light,but I have so many in the works I am hesitating a little,need a day or two to see where I stand with other lights.

Yeah u should make a wish list folder and drop stuff in there 50% of the time the urge goes away for me and I save money!

 

[mikeyx]

Vinh,

Any ETA on the 2nd batch ?

Thanks,
Mike

 

[Skylumen]

All MH20 just arrived

 

[scintillator]

I would like one please,
XML2 U3 PDTc + $15.00
V54 Engraved +$5.00

paypal sent to vinhnguyen54

 

[Skylumen]

I have a feeling you guys will really like this light

 

[Kevin1322]

Can't wait to get it!

 

[Skylumen]

Huge batch of MH20 is in. I will try to get most if not all MH20 out before I leave

 

[markr6]

I'm probably not interested in one, but just curious about the scratches. Is this light glued or assembled some specific way that makes it harder to open? Couldn't some type of rubber protector be used in a vice or pliers...or however it is done?

 

[Skylumen]

I'm probably not interested in one, but just curious about the scratches. Is this light glued or assembled some specific way that makes it harder to open? Couldn't some type of rubber protector be used in a vice or pliers...or however it is done?

Most are not scratch. Just one in a while. I am having a friend make more than one tool to open more sizes more efficiently.

All MH20vn shoudl be shipped today!

 

[scintillator]

Oh boy I should be in this batch.

 

[durainello]

Just hoping someone can do a video review with the XML2 U3 PDTc before deciding getting it.