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3. Change inverter settings:
A. Press SET button on Inverter to open parameter settings
B. Press UP or DOWN and go to Parameter #9 and then press ENT button
C. Parameter setting will begin to flash, then change to 54.0V.
D. Press ENT button to save setting
E. Press UP or DOWN and go to Parameter #28 and then press ENT button
F. Parameter setting will begin to flash, then change to 5A.
G. Press SET button to exit setting menu
4. Connect the unit to an external 120VAC (up to 30A) power source.
5. Continue to charge with shore power for an extended amount of time.
NOTE: Dependent on the lithium battery condition, balancing may take 1-2 days.
6. To observe the cell imbalance differential gap closing, discharge the battery to the same Total
Voltage in Step 2 and compare the cell differential. It should be observed that the cell
differential should be closer as this cannot be seen when the battery is fully charged.
NOTE: Repeat Steps 2-5 until the cell differential has closed completely and/or until the
Cell Imbalance error has cleared.
Battery Monitor
Typically, the battery monitor is mounted in the overhead cabinet or near the Firefly Touchscreen.
Display features include:
• Lights: Power (PWR), Run and Communication (COM)
A: Battery Operation Status
• Status = this refers to state, whether it is charging or discharging
• Charger Operating Status = this is for the engine driven alternator/generator only, not the solar or
inverter / charger
• Faults = this refers to any faults from the battery
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