InstallationTurn off engine, all accessories and key off.Remove the negative cable (Ground) first, and then positive cable from the old battery.Remove the hold-down bracket or clamp.Replace with new battery and fix it with hold-down bracket or clamp.Connect cables in reverse order from positive to negativeIf clamp or cables are corroded, remove corroded material and grease itRechargingIf the battery is below 12.4V or fails to pass the load test, battery must be recharged as soon as possible to prevent lead sulfation. During charge, if the battery sprays electrolyte through the vent holes or gets hot (over 52℃), the charge must be stopped for a time to allow the battery to cool.Batteries must be appropriately charged to ensure proper mixing of electrolyte avoiding stratification.Batteries should be charged after every use to ensure they are never stored in a discharged condition.If batteries are stored for extended periods of time they should be charged frequently and should be connected to a smart battery maintainer.Lead-acid batteries DO NOT have a memory affect (they do not need to be fully discharged prior to charging)Constant current charge methodMeasure the OCV(Open Circuit Voltage)of a discharged battery.Connect the battery to constant current charger and start charging.When the charging time is completed, separate battery from the charger.Constant voltage charge methodConnect the discharged battery to constant voltage charger.Charge for 24 hours as following voltage upon battery type.- 12V MF Battery: 16V- 12V AGM Battery: 14.4VWhen the charging time is completed, separate battery from the charger.