[dcb]

Yah, not sure about the 1% bit for that part but by all means test it out mech. If you think there is a large enough scenario where it makes sense then go for it.

For my own style (mostly p&g, not many long trips) that thing would be on whenever the engine is on (assuming I downsized) and I might need another alternator or two to keep the lights on in between pulses. In fact since I am either accelerating or gliding 99.9% of the time I'm pretty sure I would never consider this electric blower approach.