I would add that per the Supernova web site they do make a battery version of their taillight intended for use with their battery headlights. It has a connector that plugs into the battery and then the headlight cable plugs into the taillight connector apparently. No idea if any current limiting electronics are built into the taillight connector on the battery version.
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Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
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