3-8.4v single move 2 amp driver

[RaceR86]

@bdiddle

@RedForest UK

E1320 has a few if I remember correctly. They come stock in one of KDs cheap XM-L P60 drop-ins. The efficiency isn’t great though and they drop out of regulation at around 3.9v.

Yeah I have a few of the red single mode “18v” drivers they sell. By 3.5v the led is less then a lumen :~
More of a 3.6-18v driver.

I shared some of my findings with that driver here. Like bdiddle say, its more of a 3.6-18V.
Output on mine was not higher than 1,5A with XM-L. Most places advertise them as 1-1.3A.

There is also a similar version here that can easily be resistor modded. I have heard about someone on BLF who made it into a 2 amp driver.
Taken from a review from DX:

Pros:
Can be used to drive several emitters in series and gives best efficiency when the LED Vf is closely matched to the input voltage. Current output can be vared by changing the loop back resistor. As they come they give 1.2 amps with an R2. Fit an R12 to up the ouitput to about 1.8 amps, or an R27 to get it down to about 900 mA Soldering in a new resistor is not very finicky due to its size.
Cons:
Poor efficiency driving single emitter, I got only about 60% from an 8.2V input driving an XML
Other:
It appears to use the AX 2002 chip which is rated up to 2 amps
Bottomline:
Tremendous value for money at the price, and easily adaptable