1997 Ski-Doo Factory Shop Manual Volume One, Page 197Get this manual
Section 05 ELECTRICAL Sub-Section 05 (BATTERY)
BATTERY STORAGE
Disconnect and remove battery from the vehicleCheck electrolyte level in each cell, add distilled water up to upper level lineCAUTIONDo not overfill
1Remove the sealing tube from the vent elbowInstall vent tube, included in the battery kit, to battery elbowWARNINGFailure to remove the sealing tube could result in an explosion;
The battery must always be stored in fully charged conditionIf required, charge until specific gravity of 1.260 is obtainedCAUTIONBattery electrolyte temperature must not exceed 50C (122F)The casing should not feel hotClean battery terminals and cable connections using wire brushApply light coat of dielectric grease (P413 7017 00) or petroleum jelly on terminalsClean battery casing and caps using solution of baking soda and waterDo not allow cleaning solution to enter battery, otherwise it will destroy the electrolyteRinse battery with clear water and dry well using clean clothStore battery on wooden shelf in cool dry placeSuch conditions reduce self-discharging and keep fluid evaporation to minimumDuring the storage period, recheck electrolyte level and specific gravity readings at least every 40 daysAs necessary, keep the battery at its upper level line and near full charge as possible (trickle charge)