BigBatter |48V ETHOS 10.2KWH | UL1973 | UL9540A | Home Battery Backup LFP Product Summary: The BigBattery ETHOS™ is a leader in both on-grid and off-grid solar installations, known for its quality, value, ease of installation, proven reliability and safety record. Expandable up to 80+ kWh, ETHOS adapts to your energy needs-perfect for home backup, off-grid, and hybrid systems. Designed with UL 9540 certification, advanced battery management, and U.S.-engineered design, ETHOS delivers reliable, maintenance-free performance with seamless integration into leading inverter systems. Ships From: Texas, USA Warranty: 12 Years Support: Lifetime USA-Based Tech Support Compatibility UL 9540 Certified + Closed-Loop Communication (Grid-Tied): EG4 18kPV EG4 FlexBoss18 EG4 FlexBoss21 Closed-Loop Communication (Off Grid Non-UL 9540 Installs): All BigBattery APEX Inverters All EG4 Inverters Key Features LiFePO4 Battery Chemistry – Safe, stable lithium technology with long lifespan 6,000+ Cycle Life – Built for years of daily use and long-term savings Advanced BMS Protection – Full protection against voltage, current, and temperature risks Outdoor-Ready Design – Built for durability in real-world environments along with indoor setup also Modular Expansion – Easily increase capacity without replacing your system Integrated Smart Control – Optimized performance with ETHOS controller Fast Installation – Simplified, plug-and-play modular setup Maintenance-Free – No routine servicing required A future-ready battery platform built for energy independence-with the safety, support, and reliability you can trust. Downloads & Specifications Battery Specifications GTIN-12 (U.P.C.):850061252005 System Voltage:48V Nominal Voltage:51.2V Chemistry:LiFePO4 kWh Capacity:10.24kWh (2x), 15.36 kWh (3x), 20.48 kWh (4x), 30.72 kWh (6x), 40.96 kWh (8x), 46.08 kWh (9x) Ah Capacity:200Ah Charging Voltage Range:55.6 – 57V Max Charge Voltage:57V Operating Voltage Range:48 – 57V Suggested Low Voltage Cutoff:48 – 50.8V BMS Cutoff Range:42 – 47V Cell Configuration:16S Max Continuous Discharge Current:200A Max Continuous Power:10240W 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) Weight:273 lb (123.8 kg) Depth:6.7 in (170 mm) Width:26.5 in (674 mm) Height:43.3 in (1100 mm) Max Connections:Up to (16) parallel connections per control box Protection Rating:IP65 / NEMA 4X Communications:CANBus / RS485 Certifications:UL9540, UL9540A, UL1973, & UN38.3 Battery Downloads SKU#:K0949, K0950, K0951, K0953, K0150, K0151 Spec Sheet:DOWNLOAD User Manual:DOWNLOAD UL9540A Certificate:DOWNLOAD UL1973 Certificate:DOWNLOAD UN38.3 Certificate:DOWNLOAD Safety Data Sheet:DOWNLOAD CEC Listing- BigBattery ETHOS:GO TO LINK Warranty BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade. For more information, please visit our policy page
