Hi, I may not be a LED guru, but, I'm pretty much a technical guy. Firstly, I'd like to sincerely apologise if I offend the Treadstarter or put a damper on ur parade... But it seems to me that this 20 LED kit is really underpowered?
I'm looking at the LED driver that is spec'd at 680mA CC, so u get two of these, and u'll put 10 in series to each Driver. Roughly, that makes a delievry of 68mA per LED ? For a 3Watt rated led, maximum Vf of maybe 3.7Vdc at 700mA, i'd say that u're driving the LED at 1/10 of its potential.
So LED gurus, what am I'm missing ?