Just a quick look at this after it arrived in the mail today– for under $20 shipped, I’m impressed. 170 white LEDs and a clever power system.
You can use AA cells or any of a long list of camcorder batteries.
Boost converter. When it’s running full bore I measured 13.8vdc across the led array. This from six aa NiMH cells…
The board at foreground is a push button LED battery fuel gauge. One to four lights indicate the voltage. When I crank the light on the NiMH cells, it drops to one or two immediately. This thing will really shine on lithium ion…
A ventilated cover goes over that…
Thermal issues? Not particularly. I ran the light full tilt a while and the board got barely bath water warm.
It includes two color matching filters and one diffuser. Hopefully it’ll get a test drive tonight.
I’m wondering if it will handle being hooked up to a 14.4v pack. Specs on their website say 7.2-12v but the TI switcher chip and caps are rated for enough… I guess there’s just one way to find out! Where’d I put those D-tap plugs?