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BigBattery 48V ETHOS 15.3KWH (3 Module)

BigBattery 48V ETHOS 15.3KWH (3 Module)
$4,030.00 - $4,030.00
$4,030.00
$4,030.00 - $4,030.00
$4,030.00
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BigBattery ETHOS | 48V | 15.3KWH| Home Battery Backup LiFePO4

The BigBattery ETHOS 48V 15.3kWh energy storage system stacks three 5.12kWh LiFePO4 battery modules into a single UL-certified tower, delivering 15.36kWh of usable capacity and 300Ah for whole-home backup, off-grid solar storage, or time-of-use load shifting. Built on safe, stable lithium iron phosphate chemistry with an advanced integrated BMS, the ETHOS system provides maintenance-free operation with protection against overcharge, over-discharge, and thermal extremes — all housed in an IP65 / NEMA 4X rated enclosure suited to garages, utility rooms, and other demanding installation environments. With 250A of continuous discharge and 12,800W of continuous power on tap, it handles multiple heavy household loads at once while keeping deep reserves for extended outages.

Certified to UL1973, UL9540, UL9540A, and UN38.3, the ETHOS platform meets the safety standards required for permitted, grid-tied residential installations and is CEC listed for California solar projects. CANBus and RS485 communications ensure closed-loop compatibility with popular 48V hybrid and off-grid inverters, and the modular tower design leaves room to grow — additional 5.12kWh modules stack cleanly onto the same system whenever your energy needs increase. Backed by BigBattery's 12-year warranty, the ETHOS 48V 15.3kWh system is a straightforward, code-compliant foundation for lasting home energy independence.


ETHOS 48V Three Battery Module Specs

System Voltage:
48V
Nominal Voltage:
51.2V
Chemistry:
LiFePO4
kWh Capacity:
15.36kWh
Ah Capacity:
300Ah
Charging Voltage Range:
55.6V – 57V
Max Charge Voltage:
58.8V
Operating Voltage Range:
48V – 57V
Suggested Low Voltage Cutoff:
48V – 50.8V
Cell Configuration:
16S 3P
Max Continuous Discharge Current:
250A
Max Continuous Power:
12800W
Max Discharge Peak Current:
300A (Max 5 seconds)
Max Charge Current:
200A
Charge Temperature Range:
32°F – 113°F (0°C – 45°C)
Discharge Temperature Range:
-4°F – 140°F (-20°C – 60°C)
Optimal Discharge Temperature Range:
59°F – 95°F (15°C – 35°C)
Storage Temperature Range (SoC >50%):
-4°F – 113°F (-20°C – 45°C) (Max 6 months)
Dimensions (DxWxH):
6.7 x 26.5 x 59.8 in (170 x 674 x 1519mm)
Weight:
387 lbs (175.5 kg)
Max Connections:
Up to (16) parallel connections per control box
Communications:
CANBus / RS485
Protection Rating:
IP65 / NEMA 4X
Certifications:
UL9540A, UL1973, & UN38.3

ETHOS 48V Three Battery Module Features

  • 15.36kWh Extended-Runtime Capacity: Three stacked 5.12kWh LiFePO4 modules provide enough stored energy to carry essential household circuits through multi-day outages or bank a full day of solar production for overnight use.
  • 250A Continuous Discharge Power: With 12,800W of continuous output, the system runs well pumps, HVAC equipment, kitchen appliances, and workshop loads simultaneously without strain.
  • UL-Certified Safety Platform: Certified to UL9540A, UL1973, and UN38.3, giving you the documentation needed for permitted, code-compliant residential energy storage installations.
  • Expandable Modular Tower Design: Additional 5.12kWh ETHOS modules stack directly onto the same system, so your storage capacity can grow with your energy needs instead of requiring a full replacement.
  • Closed-Loop Inverter Communication: CANBus and RS485 protocols keep the battery and your 48V hybrid or off-grid inverter in constant communication for optimized charging and reliable performance.
  • Weather-Resistant IP65 / NEMA 4X Enclosure: Sealed against dust and water jets, allowing confident installation in garages, utility rooms, and other demanding environments.
  • Advanced BMS Protection: Built-in battery management guards against overcharge, over-discharge, and temperature extremes, delivering maintenance-free operation you don't have to think about.
  • Space-Saving Vertical Footprint: The full 15.36kWh tower stands just under 60 inches tall and 6.7 inches deep, tucking neatly against a wall where a traditional battery bank of this capacity wouldn't fit.

Your Satisfaction with BigBattery is Guaranteed:

  • 12-Year Limited Warranty