It’s true that user requirements often do vary…From my own perspective the sole material issue could be with ‘charging below 32f’ (note, discharging is far lower…), yet this one parameter can be easily overcome with either a built into the battery heater option, or adding a retro-heated battery blanket, or via interior cabinet mounting (as I’ve done), or by simply awaiting the next available harvest window…For added clarity, Mfg specs on my battery state:
Charge Temp: from 32f up to 113f
Discharge Temp: from 149f down to -04f
Storage Temp: -04f to 113f
3 tons