2008 Polaris Ranger RZR Service Manual, Page 294Get this manual
ELECTRICAL CHARGING SYSTEM
Alternator Output
RPM 2500 AMPS 20 VOLTS 13.2 Vdc Do not allow the battery cables to become disconnected with the engine runningFollow the steps below as outlined to reduce the chance of damage to electrical componentsThe "break even" point of the charging system is the point at which the alternator overcomes all system loads (lights, etc and begins to charge the batteryDepending on battery condition and system load, the break even point may vary slightlyThe battery should be fully charged before performing this test
Charging System "Break Even" Test CAUTION