Description
BigBattery ETHOS | 48V | 5.1kWh | UL1973 | Home Battery Backup LiFePO4
The BigBattery ETHOS 48V 5.1kWh battery module is a stackable LiFePO4 expansion unit designed to grow an existing ETHOS home battery backup or solar energy storage system. Rather than a standalone kit, this 51.2V nominal module integrates directly with the ETHOS controller and rack architecture, letting homeowners add 5.12kWh of usable capacity at a time as household energy demands increase whether that’s supporting 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 module delivers maintenance-free operation with protection against overcharge, over-discharge, and thermal extremes, all inside an IP65 / NEMA 4X rated enclosure suitable for demanding installation environments.
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 scales cleanly simply stack additional modules to multiply capacity within a single UL-certified system. Backed by BigBattery’s 12-year warranty, the ETHOS 48V 5.1kWh module is a straightforward, code-compliant path to expanding home energy independence without replacing your existing setup.
ETHOS 48V Singular Battery Module Specs
System Voltage: 48VNominal Voltage: 51.2VChemistry: LiFePO4kWh Capacity: 5.12kWhAh Capacity: 100AhCharging Voltage Range: 55.6V 57VMax Charge Voltage: 58.8VOperating Voltage Range: 48V 57VSuggested Low Voltage Cutoff: 48V 50.8VCell Configuration: 16SMax Continuous Discharge Current: 100AMax Continuous Power: 5120W Max Discharge Peak Current: 300A (Max 5 seconds)Max Charge Current: 200ACharge Temperature Range: 32F 113F (0C 45C)Discharge Temperature Range: -4F 140F (-20C 60C)Optimal Discharge Temperature Range: 59F 95F (15C 35C)Storage Temperature Range (SoC>50%): -4F 113F (-20C 45C) (Max 6 months)Dimensions (DxWxH): 6.7 x 26.5 x 16.14 in (170 x 674 x 410mm)Weight: 121 lbs (54.8 kg)Max Connections: Up to (16) parallel connections per control boxCommunications: CANBus / RS485Protection Rating: IP65 / NEMA 4XCertifications: UL9540A, UL1973, & UN38.3
ETHOS 48V Singular Battery Module Features
- Stackable 5.12kWh Expansion Module: Adds 5.12kWh of LiFePO4 capacity to an existing ETHOS system, letting you scale your home backup or off-grid storage one module at a time as your energy needs grow.
- UL-Certified Safety Platform: Certified to UL9540A, UL1973, and UN38.3, giving you the documentation needed for permitted, code-compliant residential energy storage installations.
- Seamless ETHOS Integration: Designed to drop into the ETHOS controller and rack architecture, so expanding your system is a straightforward stack-and-connect process rather than a rewiring project.
- 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.
- Wide Operating Temperature Window: Discharges reliably from -4F to 140F, keeping your backup power available through cold snaps and summer heat alike.
- Manageable Modular Footprint: At 121 lbs and just 6.7 inches deep, each module is far easier to position and install than a single monolithic battery bank of equivalent capacity.
Your Satisfaction with BigBattery is Guaranteed:
- 12-Year Limited Warranty
