Lipo warm-up?

Shawn Palmer, when he was still with CC, wrote a lipo FAQ on RCCA forums and he addressed this to some extent - only time I've seen it mentioned. Here's some of that work -

"Lipo Tweaks
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Starting Temperature
Here's one for the real tech heads! Like most batteries, lipos all have an "ideal output temperature". When run with a starting temperature of around 100degF, the internal resistance is at it's lowest. So you get best voltage under load AND least amount of heat built up during the run. When I fly (small) lipo-powered planes in the winter, I put the packs in my jeans pocket for about 1/2 hour before I go fly them. The initial performance is WAY better than starting them at either room temp (60-70degF) or the garage temp (35-45degF). The really telling point comes when a few minutes into the flight when it's very cold outside, the pack starts to cool from the airflow and the performance drops drastically."