HV Battery Pre-Heat; possibly an overlooked cold weather FE/MPG tweak. This thread is an attempt to give stand-alone visibility and direct access to an idea that was embedded in another more general thread. I'll begin by extracting, and editing for brevity where appropriate, the relevant posts. Ok, that's the introduction. Once again, has anybody tried something like this? If so, any pics? Any comments, suggestions, dire warnings are welcomed. As a preliminary concept, I'm thinking of something that would have maybe 100-200 watts heating output, enough to get ~75 degF air, and a small muffin fan to move the air through the existing battery cooling ducting. It would be used along with a electric block heater EBH for two or three hours before start-up on cold mornings. I'm still hunting around for some pics/drawings of the HV battery and the associated ductwork, especially on the exhaust side. When I find something, I'll post it. Of course, if you have something ready-at-hand, your posting it is welcomed.