2009 Polaris Outlaw 450/525 Service Manual, Page 173Get this manual
ELECTRICAL Charging System Testing Flow Chart
Whenever charging system problems are suspected, proceed with the following system checksUsing multi-meter, set it to read DC volts, measure the battery open circuit voltage (across the positive and negative posts)Is the reading 12.5 volts or higher? Yes
Meter Setting: DC Volts
Remove the battery and properly serviceReinstall the fully charged battery or fully charged shop battery
With the transmission in neutral, start the engine and increase RPM to between 3000 and 4000Read battery voltage with the multi-meterReadings should increase to 13.0 VDCWas an increase noticed? No
Meter Setting: DC Amps
Check Key off Current Draw
Perform system "Break Even Amperage" test outlined previously in this chapterDoes charging occur as specified? No