2002 Bombardier Quest 650XT Service Manual, Page 200Get this manual
Section 05 ELECTRICAL Subsection 04 (STARTING SYSTEM)
If the charging current is not up to measurable amount at the end of about 10 hours, the battery should be replaced If the charging current is measurable before the end or at the end of about 10 hours, the battery is good and charging should be completed in the normal manner It is recommended that any battery recharged by this procedure be load tested prior to returning it to service
INSTALLATION
Reinstall and fasten the battery, making sure to reinstall the vent tube