1983 Ski-Doo Shop Manual, Page 212Get this manual
SECTION 04 ELECTR ICAL SUB-SECTION 04 (BATTERY)
BATTERY CHARGING EQUIPMENT
The battery charger must have an adjustable charg ing rate Variable 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 ampereIf your present charger is not adjustable to the proper current values, rheostat can be connected in series with the battery to provide adjustment12 Ohm50 watt rheostats, such as OHMITE0314 or MALLORY 50K 12P, are available from electronic parts supply shops and they are suitable for use with most chargers if the peak current is held below ampsIf you need an accurate ammeter, we recommend the use of: SHU RITE5202 (0 to amps) or5203 (0 to amps) available from electronic parts supply shops+