Outback Power Systems 80 user manual Suggested Battery Charger SET Points

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34. SUGGESTED BATTERY CHARGER SET POINTS

The battery manufacturer should provide you with specific instructions on the following maintenance and voltage set point limits for the specific batteries. The following information can be used when the manufacturer’s information is not available.

SEALED LEAD ACID – AGM / GEL	V	24V	48V
ABSORB voltage set point	14.4V	28.8V	57.6V
FLOAT voltage set point	13.4V	26.8V	53.6V
NON-SEALED LEAD ACID	V	24V	48V
ABSORB voltage set point	14.8V	29.6V	59.2V
FLOAT voltage set point	13.8V	27.6V	55.2V

Note: Higher settings can be used with non-sealed batteries, but water consumption will be greater and excessive temperatures when recharging may occur.

Battery Voltage and State of Charge

A battery’s voltage can be used as a guideline to estimate the amount of power stored in the battery that is available for use. When referencing the battery voltage on the display, be sure the battery is not under significant recharging or heavy loads. Otherwise, the DC voltage is not reflective of the battery state of cycle. Often the best time to check the battery voltage is in the morning (pre-charging) or at night (post-charging), with the battery disconnected from charging sources and loads and a rest for at least three hours.

Operation of a battery below 50% state of cycle will adversely affect the long term health of the battery system and will result in premature failure. Keeping the battery above the 50% level and recharging it completely once a month will ensure proper operation and good performance.

STATE OF CHARGE

Nominal Battery	Charged	Good (~75%)	Average (~50%)	Low (~25%)	Discharged
Voltage
12V	over 12.6V	12.3V	12.0V	11.7V	under 11.4V
24V	over 25.2V	24.6V	24.0V	23.4V	under 22.8V
48V	over 50.4V	49.2V	48.0V	46.8V	under 45.6V
60V	over 63.0V	61.5V	60.0V	58.5V	under 57.0V

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Contents User’s Guide Dear OutBack Customer Warranty SummaryDisclaimer About OutBack Power SystemsDate and Revision Contact InformationTable of Contents Product Registration and Optional Extended Warranty Scope FLEXmax 80 Maximum Power Point Tracking Charge ControllerIntroduction FirmwareStandards and Requirements Personal Precautions During Installation Outback Power Systems FLEXmax Mounting to Plywood Installing the FLEXmax 80 FLEXware DC EnclosuresDC Enclosure FLEXmax Bushing Locknut Conduit Nipple Wire and Disconnect Sizing Determining Wire SizesOpen Circuit Voltage/Wire and Disconnect Size FLEXmax 80 wiring compartment FLEXmax 80 Wiring ConnectionsPage Page Page Soft keys How to Read the FLEXmax 80 Screen DiagramsPower Up Screen Powering UpOutBack12V Power Systems FLEXmax Select Version Elija la Version Password ContrasenaUSA Next Enter Entra SEL 150Sytem Voltage USA NoyesEnter AUX OFF Status ScreenEnd of Day Summary Screen Recharging Using the PV ArrayCharger Aux Light EQ Misc Advanced Logging Stats Accessing the Main MenuExit F G GO Current Limit Charger Set-Up80.0A Absorbing 14.4V Float 13.8VAUX Mode AUX Mode and Its FunctionsExit Next SET Mode Night Light Output OffPressing the Next soft key scrolls through the AUX functions AUX Mode Menu PathAUX modes in order of appearance on the FLEXmax 80 display Off Programming the AUX ModesVent Fan Exitvolt Vent FAN VoltsExit Next SET Exit VoltPV Trigger Output Off Fan screenPV Trigger Output OnExit Time Volt PV Volts Exit Time VoltHold Time Sec 01.1 Back + Press the Next soft key to view the Error Output screenPV Trigger Output On Exitvolt Error LOW Batt Volts Error Output 01 hrsExitvolt AUX Mode Error Output Exit Hyst Time Volt Exit Next SET Mode AUX ModeBack + OFF Night Light On Time Hours Back + Night Light Off Hysteresis Time Minutes Back +Night Light Threshold Voltage 010 Back + Press the Volt soft keyFloat Output Off Output Off AutoDiversion Relay Output Off Press the Next soft key ro view the AUX Float screenBack DLY+ AUX Mode Hold Delay 01.0 Time SecondsDiversion Relay Absorb--Float--EQ Relative VoltsDiversion Solid St Output On Exit Time Volt AUX ModeExample of Diversion Press the Exit soft keyDiversion Load and AUX Wiring Set-Up Illustrated Press the Time and Volt soft keys to adjust the set points Delay Time Sec Timer Back +Low Batt Disconnect Back Exit Time Volt Disconnect VoltsRE-CONNECT Volts Charger GAux Light Misc Remote Output OffLogging Stats Exit soft key twice to return to the Main Menu Off screenExit + Mode EQ-Battery EqualizeBacklight Charger Aux GLight EQ Misc Optimize Logging StatsExit Next -EQV +EQV Battery Equalize Battery EqualizeExit Next -HRS +HRS Battery Equalize Back Auto Start Stop000 CountExit DAY +DAY Exit Next -EQV +EQVGT State PWM% ChgT 255 07 50.0 MISC-MiscellaneousExit Next Press Next to Continue to the Force Bulk/Float ScreenForce PWM%Exit Next Float Bulk PCBAdvanced Snooze Mode .6 ampCharger Aux Light Misc GAdvanced Logging Stats Exit Advanced MenuMppt Mode Auto Track Exit Next nonGT Mode Wakeup Mode 1.5V 05m Exit Next +VOC +MinThis screen allows the user to choose one of these modes Press the Next soft key to view the Park Mpp screenExit Next -% +% Advanced Menu Park Mpp 77 % VocMpp Range Limit %Voc Min Max Exit Next 1/2 90% Park Mpp Watts 77 % VocAdvanced Menu Absorb Time Limits Hours Charging-Related ScreensExit Next + 12.6 00 aRTS Compensation 14.1 Vbatt Calibration 14.1Exit Next Wide Advanced Menu Exit Next Limit SET RTS CompensationMode Exit Next Mode Mode Exit Next Mode Advanced MenuRTS Compensation 14.4 V F Exit Next Limit SETReset to Defaults? Exit Next Mode Advanced MenuAux Polarity Yesno Advanced Menu Are you sure? Reset to DefaultsCharger GLogging StatsClear LOG Back Totl Daily LoggingToday 0000Ah 00.0 KWH 011Vp 00.0Ap 00kWp MAX MIN FLTStats Secondary Stats screen Micro-Hydro and Fuel Cell Applications Warranty its use in these applicationsTo adjust the Lower Mpp Range Limit Mppt Mode Auto TrackAdvanced Menu Micro-Hydro and Fuel Cell Applications Park Mpp WattsAbbreviated Menu Map Application Notes OutBack Power System GTFX/GVFX Grid-tie settingsGrid-tie applications non-OutBack inverter/chargers Positive grounded systems24V Battery System Efficiency Curve 12V Battery System Efficiency CurveUnderstanding the Various Operational Modes Page Page Aux relay state indicates if the AUX is on or OFF MATE-Displayed FLEXmax 80 Screens Status Mode ScreensFLEXmax Meter Screens MATE-Displayed FLEXmax 80 Status Meter ScreensPress Setp to view Setpoint screens MATE-Displayed FLEXmax 80 Advanced Screens MATE-Displayed FLEXmax 80 Status Setpt SET Point ScreenCC Setpoint Screens FLEXmax 80 Advanced Menu FLEXmax 80 AUX Screens FLEXmax 80 EQ ScreensFLEXmax 80 Displayed Screens FLEXmax 80 Stats ScreensAbbreviated Exit Next + Advanced Menu FLEXmax 80 does not boot/power-up blank LCD Troubleshooting GuideFLEXmax 80 not producing expected power FLEXmax 80 is always SleepingFLEXmax 80 is not equalizing FLEXmax 80 Battery Temperature Compensated VoltageFLEXmax 80 Internal Fan To enable/open the FLEXmax Select Version screensFLEXmax 80 is beeping Typical Array Sizing Guide Standard vs. Australian Default Settings 12V PV Array 16v Vmp Wire Distance Chart24V PV Array 32v Vmp 36V PV Array 48v Vmp60V PV Array 80v Vmp 48V PV Array 64v Vmp72V PV Array 96v Vmp Battery Side of the Controller Wire and Disconnect SizingPV Side of the Controller NEC ComplianceMaximum recommended battery conductor is #2** AWG Wiring CompartmentRecommended Conductor and Breaker Sizes for the FLEXmax Output Rating less than 64 ampsFLEXmax 80 MULTI-STAGE Battery Charging Page Battery Temperature Compensated System Non-Battery Temperature Compensated SystemBattery temperature compensation with other slopes Battery Voltage and State of Charge Suggested Battery Charger SET PointsCalling the Factory for Assistance SpecificationsFLEXmax Products Five Year Limited Warranty InformationRevision.2007-10-02 Outback Power Systems Inc 19009 62nd Ave. NE Limited Warranty RegistrationEU Declaration of Conformity OWNER’S System Information Phone +1 BARCELONA, España Phone +34.93.654.9568