Description
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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