BigBattery ETHOS | 48V – 5.1kWh | UL1973 | Home Battery Backup LFP Product Summary: Single 48V 5.12kWh ETHOS LiFePO₄ battery module engineered to expand an existing ETHOS stack or system—not a standalone kit. Integrates with the ETHOS controller and rack for UL-certified configurations, delivering safe, reliable, maintenance-free storage with advanced BMS protection. Modular by design, it adds capacity as needs grow and is backed by a 12-Year Warranty. Downloads & Specifications GTIN-12 (U.P.C.):850061252005 System Voltage:48V Nominal Voltage:51.2V Chemistry:LiFePO4 kWh Capacity:10.24kWh 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 2P 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#:FETHS-48051-G1 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
