Also, the temperature isn't any higher than the battery already encounters in many other situations.
1) Supercharge to 80% on a cool. After you disconnect, turn on max battery and it will already say it's "ready".
2) After driving for at least 30 minutes when the temperature is 80F, turn on max battery and it will most likely show "ready". The higher the temp outside, the sooner it will be ready. The more spirited driving you do, the sooner it will be ready. Using AC will also heat up the battery sooner. In the aforementioned scenarios, the battery will be at max battery ready without actually using extra energy to heat the battery.