1999-2004 Suzuki King Quad LT-300 300F ATV Factory Service Manual, Page 269Get this manual
SERVICING INFORMAnON
BATTERY
Complaint Sulfation or spots on surfaces of cell plateSymptom and possible causes
1 Electrolyte is too low
Remedy Add distilled water if the battery has not been damaged, and then rechargeReplace the batteryReplace Restore by replacing the electrolyterecharging it fully detached from the vehicle, and then adjusting the electrolyte's specific gravityCheck the generator, regulatorrectifier, and circuit connections and make necessary adjustments for the specified charging operationReplace battery and correct the charging systemReplace the battery
2Cracked battery case3Battery has been left in run-down condition for long time4Foreign matter has entered the battery has become mixed with electrolyte