i should order some of these. I wonder how these would do in a modded, Dedomed single XM-L2 on copper Thrower, powered by 4 , 18650s in parallel to quadruple the input current ?
Its not a buck or boost driver, from what I have gathered it’s just direct drive with a mcu controlling modes using the FET as the switch. It’s current is limited by its own resistance or the battery voltage sag matched to the vf of the led used at its current. They where kind of iffy last batch, some of the drivers seemed to be programmed wrong, running only a percentage of pwm in high. Instead of high 100% it would use pwm at say 70% in high mode. Hope they got that issue fixed. They also came with different FET’s but that didn’t seem to change max current. With 4 18650’s parallel there would be less voltage sag so maybe you would see a little more current than running a single cell.
OUTPUT CURRENT 1900 mA
Seems legit, I think I'll buy a hundred of them.
Comfychair do you have any idea how they are limiting the current on this new batch. I don’t think their using a resistor to limit current. Do you suppose they are using pwm again.
Or did they happen to use a crappy cell to do the test thus getting only 1.9A?
If FT is sending out the driver pictured, it is the good one. However, the problem is, that's the same picture showing the same FET as when I last ordered two pieces, and instead of what's in the picture, I got these:
So, somebody else can be the guinea pig here.
Last time I ordered the cheaper one and I got the N03 FET that was pictured but the NO6 was generally the better one. Mine got like 2.8A on high with Sony IMRs using both an XPG2 and a dedomed XRE.
I have the one on the right.
It gives me 4.05A on an XP-G2 with a normal NCR18650.
Mind you, this is measured on the LED side.
On the battery side I also get 2.6ish amps.
If you have 2 current meters to use simultaneously- one for the LED and one for battery, they should read the same.
Since you’re getting different currents, then you’re introducing a lot of resistance when measuring at the battery.
Oh really. So the resistance disappears when I measure on the LED side?
I've only got one meter.