2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 452Get this manual
Section 08 ELECTRICAL Subsection 04 (BATTERY)
CAUTION: Do not install partially charged battery on snowmobile since the casing might crack at freezing temperatureThe following chart shows the freezing point of the electrolyte in relation to the temperature corrected specific gravityTEMPERATURE CORRECTED SPECIFIC GRAVITY 1.265 1.225 1.200 1.150 1.110 FREEZING POINT OF ELECTROLYTE59C37C27C15C3C (- 75F) (- 35F) (- 17F) (+ 5F) (+ 27F)