i believe that's the case with current batteries too. Car batteries, such as Tesla's, require both heating and cooling elements to keep them in an acceptable temperature range. Unsure what the exact temperature range is, but my guess is it's not too far off of those ranges.

Interesting fact: Tesla achieves their ludicrous mode (2.3 seconds 0-100kph) by pre-heating their batteries so that more power can be drawn. During my test drive, it took an estimated 40 minutes to heat the batteries to do this...