1.5A XPG Dropin

[glenda17]

There is a thread for these new P60 dropins in the marketplace forum where they claim near SST-50 performance. Unfortunately they are sold out. Is there anything comparable from the budget places?

 

[gcbryan]

You can get 1A XP-G dropin's.

 

[Nautic]

One of the far east dealers have it.

 

[gcbryan]

One of the far east dealers have it.

Driven at 1.5A? Which dealer?

 

[Black Rose]

My DX sku 32953 pulls around 1.3A at the tailcap with a single 18650.

Not sure what that equates to at the LED.

 

[rice rocket]

Read some of the reviews on the 32953.

- It has a ridiculous drive current of 1.8A when driven off of two 16340s, will need to fix that.

2.23a draw off 2 123a primary seems way high. maybe that's why it's almost as bright as my mce. because it's using as many watts(10ish)

 

[Nautic]

Driven at 1.5A? Which dealer?

I´m not allowed to advertise here, but you can certainly find the place.
According to his website it draws 1420 mA, which it not quite 1,5 A but
very near. I can not vouch for the information though.

 

[Fichtenelch]

Get one from nailbender, the ones dx + kd sell aren't really efficient.

 

[Nautic]

Get one from nailbender, the ones dx + kd sell aren't really efficient.

I dont know about the Nailbender. I have one from the former you mensioned. It is advertised as 1 A. Mine draws 0.850 measured at the battery.

 

[Black Rose]

Read some of the reviews on the 32953.

The bad reviews came from the initial batch, which had a faulty driver.

The next batch, where I got my units from, had new drivers.

 

[moviles]

lol ,1a dropins 1.5 amp dropins.....


with pwm circuits and 1x18650 the current draw depend of the vf of the led (lottery)

with battery full charged the current draw will be 0.8 amp - 3 amp depending of he vf of the led .

the current draw of this one with battery full charged are 2.81 amp :

http://www.google.com/translate?u=http%3A%2F%2Fwww.forolinternas.com%2Fviewtopic.php%3Ff%3D5%26t%3D36&langpair=es|en-CN&hl=en&ie=UTF8

 

[rice rocket]

I can understand tint lotteries, but Vf lotteries? How is anyone supposed to engineer a flashlight when you can have random Vf?

 

[Nautic]

I can understand tint lotteries, but Vf lotteries? How is anyone supposed to engineer a flashlight when you can have random Vf?

And maybe Moviles can tell us how we the custommers which are not engineers are to win in the Vf lottery?

 

[moviles]

current draw of some xr-e leds at 3.5v depending of vf led:

 

[gcbryan]

Moviles is right of course.

 

[rice rocket]

Care to explain? I'm not saying he's wrong, but that's implying that Vf chart on all the datasheets mean nothing?

That also means that if you design a flashlight to operate at X brightness and to dissipate Y amount of heat and you get the opposite end of the lottery you were expecting, you might have (a) a burned emitter, and (b) a really damn hot flashlight.

Assplain for the n00bs!

 

[gcbryan]

Care to explain? I'm not saying he's wrong, but that's implying that Vf chart on all the datasheets mean nothing?

That also means that if you design a flashlight to operate at X brightness and to dissipate Y amount of heat and you get the opposite end of the lottery you were expecting, you might have (a) a burned emitter, and (b) a really damn hot flashlight.

Assplain for the n00bs!

The vf on the datasheet if for average vf. As I recall the range is listed somewhere and it's a broad range. As a designer you either have to take that into account or hand test and hand pick every emitter or have looser design tolerances. I'm a noob myself by the way.