2006 Honda TRX680 Rincon Factory Service Manual, Page 513Get this manual
BATTERYCHARGING SYSTEM CHARGING VOLTAGE INSPECTION Remove the battery cover (page 20-6)Be sure the battery is in good condition before performing this testWarm up the engine to normal operating temperatureConnect the multimeter between the battery positive (+) and negative (-) terminals
To prevent short, make absolutely certain which are the positive (+) and negative (-) terminals or cables Do not disconnect the battery or any cable in the charging system without first switching off the ignition switchFailure to follow this precaution can damage the tester or electrical componentsWith the headlights on, measure the voltage on the multimeter when the engine runs at 5,000 rpm (min )STANDARD: Measured BVMeasured CV15.5 BVBattery voltage (page 20-6) CVCharging voltage