2007-2009 Kawasaki KFX50 service manual, Page 208Get this manual
14BATTERYCHARGING SYSTEMA.CGENERATOR CHARGING Connect the charger positive (+) cable to the battery positive (+) terminalConnect the charger negative (-) cable to the battery negative (-) terminalWARNING Keep flames and sparks away from charging batteryTurn power ONOFF at the charger, not at the battery terminals to prevent sparks near the battery to avoid explosionCharge the battery according to the current specified on the batteryQuick charging should only be done in an emergencyMeasure the voltage 30 minutes after the battery is charged: Standard0.4 Quick4.0 Charging timeStandard 10 hours Quick30 minutes After charging: Open circuit voltage: 12.8 minCharging current