2007-2010 Kawasaki Ultra 250X/260X/260LX PWC Factory Service Manual, Page 384Get this manual
ELECTRICAL SYSTEM 14-25 Battery
Olncrease the charging voltage to maximum voltage of 25 if the battery will not accept current initiallyCharge for no more than five minutes at the increased voltage then check if the battery is drawing currento If the battery will accept current, decrease the voltage and charge by the standard charging method described on the battery caseIf the battery will not accept current after minutes, replace the batteryJN05Q02B C
Battery [A] Battery Charger [B] Standard Value [C] Determine battery condition after refreshing chargeODetermine the condition of the battery 30 minutes after completion of the charge by measuring the terminal voltage according to the table belowCriteria 12.6 or more 12.0less than 12.6 less than 12.0 Judgement Good Charge insufficient Unserviceable