BigBattery Ethos 5.12kWh 51.2v (48V Nominal) 100Ah, Stackable Battery Module
£661.00
Sale price
£661.00
Regular price
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BigBattery Ethos 5.12kWh 51.2v (48V Nominal) 100Ah, Stackable Battery Module
£661.00
Sale price
£661.00
Regular price
Shipping calculated at checkout.
ETHOS5.12
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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
Return policy
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Shipping
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.