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BigBattery ETHOS 48V – 5.1kWh Home Battery Backup - FETHS-48051-G1

SKU FETHS-48051-G1
Sold out
Original price $1,480.00
Original price $1,480.00 - Original price $1,480.00
Original price $1,480.00
Current price $1,290.00
$1,290.00 - $1,290.00
Current price $1,290.00
Availability:
Out of stock

BigBattery ETHOS 48V – 5.1kWh Home Battery Backup - FETHS-48051-G1 offers a powerful, scalable, and cost-efficient energy storage solution for homeowners seeking dependable backup power. Designed to pair seamlessly with the ETHOS controller, this modular 48V lithium battery delivers long-lasting performance and low cost-per-kWh—all within a UL-Certified system made in the USA. Ideal for expanding energy needs, this maintenance-free unit is perfect for off-grid setups or emergency backup, and it comes backed by an industry-leading 12-Year Warranty for peace of mind.

Features:

  • 5.1kWh capacity per unit
  • Modular and stackable design for future expansion
  • Seamless integration with ETHOS controller
  • UL-Certified system made in the USA
  • 12-Year Manufacturer Warranty
  • Maintenance-free lithium battery technology
  • Ideal for home backup or off-grid energy independence
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Specifications

SpecificationDetails
SKUFETHS-48051-G1
GTIN-12 (U.P.C.)850061252067
System Voltage48V
Nominal Voltage51.2V
ChemistryLiFePO4
kWh Capacity5.12kWh
Ah Capacity100Ah
Charging Voltage Range55.6 – 57V
Max Charge Voltage57V
Operating Voltage Range48 – 57V
Suggested Low Voltage Cutoff48 – 50.8V
Cell Configuration16S
Max Continuous Discharge Current100A
Max Continuous Power5120W
Max Discharge Peak Current150A (Max 5 seconds)
Max Charge Current100A
Charge Temperature Range32°F – 113°F (0°C – 45°C)
Discharge Temperature Range-4°F – 140°F (-20°C – 60°C)
Optimal Discharge Temperature Range59°F – 95°F (15°C – 35°C)
Storage Temperature Range (SoC >50%)-4°F – 113°F (-20°C – 45°C) (Max 6 months)
Depth6.7 in (170 mm)
Width26.5 in (674 mm)
Height16.5 in (419 mm)
Max ConnectionsUp to 16 parallel connections per control box
Protection RatingIP65
CommunicationsCANBus / RS485
CertificationsUL9540A, UL1973, UN38.3
In the Box1x Battery Module Red & Black Parallel Cable 0.7 FT (220mm)
 1x Battery Module Comm Cable 0.7 FT (220mm)
 2x L Wall Mounting Brackets + Fasteners

 

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