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Outback Power EnergyCell 290FLA > 251 Amp Hour 6 Volt Flooded Battery

Outback Power EnergyCell 290FLA > 251 Amp Hour 6 Volt Flooded Battery


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Availability: This product is no longer available.
Product Code: OUTBACK-290FLA

Description Datasheet

Outback Power EnergyCell > 251 Amp Hour 6 Volt Flooded Battery

Manufacturer Part Number: EnergyCell 290FLA

OutBack Powers EnergyCell 290FLA batteries are designed for residential or light-commercial off-grid renewable energy power demands. Optimized to work seamlessly with OutBack power conversion equipment, these batteries are a perfect addition to the OutBack single-brand system solution. Built for rugged, deep cycle cell construction, these batteries deliver superior performance and longevity.


EnergyCell 290FLA
Cells Per Unit: 3
Nominal Voltage 6VDC
Amp Hour Capacity to 1.75 Volts Per Cell at 20 C (24 hour Rate) 251
Cycle Life (50% DOD, 1.75VPC) 1200
Absorb Voltage (25 C) 7.26VDC
Absorb Time 2 hours
Float Voltage (25 C) 6.75VDC
Float Time = absorb time
Equalize Charge Frequency Equalize charge every 30 days, systems that are regularly discharged below 50% of stored capacity should be equalized every 14 days.
Re-Bulk Voltage 12VDC/ 24VDC/ 48VDC
Re-Float Voltage 12.5VDC/ 25VDC/ 50VDC
Maximim Charge Current (Per Battery) 60A
Operating Temperature Range
(w/ Temperature Compensation)
-40 to 120F (-4 to 49C)
Optimal Operating Temperature Range -40 to 80F (4 to 27C)
Temp-Comp Factor (Charging) 3mV per C per cell
Self-Discharge Time Fully charged batteries that are stored at a temperature of 80F (27C) will self discharge at a rate of 3.5% per week.
Terminal Type Standard type with stainless steel
Terminal Hardware Initial Torque Stainless thread, 100 to 120in-lbs (11 to 14Nm)
Weight 63 lbs / 28.6 kg
(H x D x W)
10.94" H x 7.06" D x 10.25" W
Warranty 2 years full replacement
Equalize Voltage 7.74VDC
Specific Gravity Full charge specific gravity (100% state of charge): 1.275
Vent Cap Bayonet
PROeye Electrolyte Level Indicator No


  • Batteries designed for residential, light-commercial grid-tied backup or off-grid renewable energy power demands
  • 1,500 cycles of 50% DOD
  • Pure lead extends the life of the battery versus traditional VLRA batteries and allows the increased float capability and maximizes runtime for backup applications.
  • Easy to install and maintain
  • PLR technology means 99% gas recombination efficient, no periodic watering of cells, no re-torquing of terminal connections, and no equalization charge under standard operating conditions
  • Optimized to work seamlessly with OutBack power conversion equipment

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