Proper Charging is Crucial! Charge before initial use!Be sure to read the D Series Instruction Sheet for full instructions.CAUTION! PLEASE READ!InstallationSecurely fasten the battery to the vehicle. XS Power 12-volt AGM Performance batteriesare designed to bolt into most automotive, truck and marine applications.Connect the battery. Observe polarity carefully.If you are running a dual battery set-up, make sure that the batteries are hooked up inparallel(positive to positive and negative to negative). Parallel doubles the amperage andreserve capacities whereas series(positive to negative) would double the voltage output.When voltage is lower than 12.6V or storage time is longer than 6 months, the battery mustbe recharged as described in the Care of XS Power 12-V AGM Battery on the instructionsheet. (see figure 1.0 reverse)When voltage is higher than 12.6V, the battery may be installed on the vehicle without anyrefresh charge.Do Not Over-tighten Battery Terminals!Whether using the automotive post adaptors, bolts or screws, the tighteningtorque should never exceed 8 ft-lbs max on any XS Power Battery!Proper Charging is crucial to the life of your XS Power battery. It is very important that the temperature of the battery remains cool with respect to the charge voltage. The chart below will help ensure propercharge voltage with different ranges of temperature.TEMPERATURE SPECIFICATIONSNominal Operating Temp.Charge Temp. RangeDischarge Temp. Range770F (250C)320F - 1040F (00C - 400C)50F - 1220F (-150C - 500C)CHARGE VOLTAGE REFERENCE CHARTTemperatureCharge VoltageFloat Voltage320F (00C)15.3014.10500F (10 0C)15.0014.20680F (200C)14.8013.75770F (250C)14.7013.65860F (300C)14.5013.501040F (400C)14.3013.35