Description
Introducing the Ethos 51.2V 100Ah Stackable Battery Module, a compact, high-performance LiFePO₄ energy storage unit engineered for reliability, safety, and scalability. With a 5.12 kWh capacity, this battery provides flexible energy storage for residential, commercial, and off-grid systems. Designed with a robust IP65-rated enclosure and modular stackable structure, it delivers the perfect balance between efficiency and expandability.
Key Features
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Stackable Modular Design: Build systems from 5.12 kWh up to 51.2 kWh simply by adding more modules.
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Advanced LiFePO₄ Chemistry: Stable, long-life lithium iron phosphate cells for superior safety.
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High Current Output: Supports up to 100 A continuous discharge and 150 A surge.
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Weatherproof Enclosure: IP65 protection against dust and moisture.
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Intelligent BMS Integration: Monitors voltage, current, and temperature for balanced performance.
Product Overview
The Ethos 51.2V 100Ah module is built for dependable, scalable energy storage. Using LiFePO₄ chemistry, it ensures exceptional safety, long cycle life, and consistent output under demanding conditions. The stackable configuration allows effortless expansion — start with a single 5.12 kWh battery and grow as your energy needs increase.
A built-in Battery Management System (BMS) continuously monitors and balances cell voltages while protecting against overcharging, deep discharging, short circuits, and temperature extremes. Its passive balancing system enhances long-term efficiency, ensuring maximum usable capacity throughout its lifespan.
Each module is protected by an IP65-rated aluminum housing, making it suitable for indoor or semi-outdoor installations. It is compatible with a wide range of hybrid and off-grid inverters, making integration into existing solar systems straightforward. With a design life of over 10 years and a cycle life between 4,000 and 8,000 cycles at 80% depth of discharge, Ethos delivers both longevity and reliability.
Ideal for homes, cabins, commercial facilities, and microgrids, this module provides a durable and future-proof power foundation.
Technical Specifications
| Specification | Details |
|---|---|
| Model | FETHS-48051-G1 |
| Nominal Voltage | 51.2 V |
| System Voltage | 48 V nominal |
| Capacity | 100 Ah / 5.12 kWh |
| Cell Configuration | 16S (16 LiFePO₄ cells) |
| Charging Voltage Range | 55.6 V – 57 V |
| Max Charge Voltage | 57 V |
| Operating Voltage Range | 48 V – 57 V |
| Low Voltage Cutoff | 48 V – 50.8 V |
| Maximum Continuous Discharge | 100 A |
| Peak Discharge Current | 150 A (≤ 5 seconds) |
| Maximum Charge Current | 100 A |
| Round-Trip Efficiency | ≥ 95 % |
| Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Cycle Life | 4,000 – 8,000 cycles @ 80 % DOD |
| Communication Protocols | CANBus / RS485 |
| Enclosure Rating | IP65 (dust and water resistant) |
| Charge Temperature Range | 0 °C – 45 °C (32 °F – 113 °F) |
| Discharge Temperature Range | –20 °C – 60 °C (–4 °F – 140 °F) |
| Storage Temperature (SoC > 50 %) | –20 °C – 45 °C (–4 °F – 113 °F) for ≤ 6 months |
| Dimensions (D × W × H) | 170 mm × 674 mm × 419 mm (6.7 in × 26.5 in × 16.5 in) |
| Weight | ≈ 45 – 50 kg (99 – 110 lbs) |
| Protection Features | Over/under-voltage, over-current, short circuit, thermal cutoff |
| Certifications | UL9540A, UL1973, UN38.3 |
| Design Life | 10 + years |
| Warranty | 10 years |
Included in the Box
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(1) Ethos Battery Module Red & Black Parallel Cable 0.7 FT (220 mm)
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(1) Ethos Battery Module Communication Cable 0.7 FT (220 mm)
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(2) L-Shaped Wall Mounting Brackets with Fasteners
Applications
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Residential Solar & Backup Systems
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Off-Grid Power and Cabins
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Commercial Storage or Load-Shifting
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Renewable Microgrid Systems
Specs & Info