What are the lowest and highest temperatures that your sealed lead acid batteries can operate in?

Power-Sonic PS, PSH, PSG and PG batteries can be discharged at temperatures from -40 degree celsius to 60 degree celsius (-40 degree Fahrenheit to 140 degree Fahrenheit) and charged at temperatures from -20 degree celsius to 50 degree celsius (-4 degree Fahrenheit to 122 degree Fahrenheit).