Anyone knows the full specifications of the light cable for BBSHD? I read 6V around, but what about A? What's the maximum Wattage it can output? Somehow my new bought light (https://www.lupine.de/products/bike-...specifications) doesn't work (it keeps blinking all the time, even when switching between modes), and it's only 1.6W in daily mode, 12W in nightly mode.