1996 Ski-Doo Shop Manual, Volume 1, Page 239Get this manual
Se ion ELECT RI CAL Sub-Section 04 (BATTERY)
10Allow gas bubbles to escape by lightly shake battery
NOTEIt is recommended to verify the battery charge once monthIf necessa, fully charge battery
SERVICING
Electrolyte Level
Since battery has been activated (see above), add distilled water to top up electrolyte
TIPS FOR CHARGING USED BATTERY
CAUTIONPrior to charging the battery, alremove it from the vehicle to prevent electrolyte spillage