Bombardier SeaDoo 1992 factory shop manual, Page 141Get this manual
Section 07 ELECTRICAL Subsection 03 (BATTERY)
BATTERY CHARGING EQUIPMENT
The battery charger should have an adjustable charging rateVariable adjustment is preferred, but unit which can be adjusted in small increments is acceptableThe battery charger must be equipped with an ammeter capable of accurately measuring current of less than one ampere
Charging Two olr More Batteries at Time
Connect all positives together and use charger with capacities (rated) equalnumber of batteryto be charged multiply by AFor exampleCharging five baltteries at time requires 110 rated charger (510 AtA
(TYPICAL)
Two batteriesA
INSTALLATION OF BATTERY