This article was written by John Swiatek, president and founder of Powerlet Products. It's been widely reprinted and that's a good thing. It's not something everyone considers. I had the pleasure of dining with John in Indiana one evening. He's a genuinely great guy and super hard worker. He's done us all favor with the great line moto-electrical hardware he manufactures. I for one, have a lot of his stuff on my bikes. Powlerlet sockets, tankbag power kits, iPod charger, cell phone charger, all kinds of stuff.
Sadly the Strom, in the finest tradition of marginal electrical components from Suzuki, has a minimal-capacity charging system. Newer DL 1Ks are just 400 watts and earlier units are 360 watts. I don't know about wee-Stroms.
I can however run two each 35 watt PIAA 510s and my Widder vest at the same time. If I am running the heated grips too, I usually shut off the PIAAs. I am thinking about putting a stealthy, weatherproof switch somewhere handy to turn off one headlight for daytime running or one 510 driving lamp as I choose. That would allow me much greater power management options especially useful in very cold weather.
Heat Trollers are good for your heated gear as they are not resistive devices. That way you can use heated gear/grips at lower that full heat settings while not wasting the "unused" portion of the current draw.