BigBattery ETHOS 2X Expansion Kit | 48V 10.24kWh LiFePO4 Battery
BigBattery ETHOS 2X Expansion Kit | 48V 10.24kWh LiFePO4 Battery
SKU: K0698
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- Price: $2,217.00
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- List Price: $2,790.00
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PRODUCT DESCRIPTION
Description
BigBattery ETHOS 2X Expansion Kit | 48V 10.24kWh LiFePO4 Battery



Product Description
The BigBattery ETHOS 2X Expansion Kit adds two ETHOS LiFePO4 battery modules to an existing ETHOS energy storage system. With 10.24kWh of additional capacity, this expansion kit provides increased runtime and greater flexibility as your energy-storage requirements grow.
Designed for seamless ETHOS system integration, the kit delivers 200Ah of capacity, 10,240W of continuous power, CANBus and RS485 communication, and multiple safety certifications.
- Adds two ETHOS battery modules to an existing system
- Provides 10.24kWh of additional energy storage
- 48V system with 51.2V nominal voltage
- 200Ah capacity
- LiFePO4 battery chemistry
- Maximum continuous power of 10,240W
- IP65 and NEMA 4X protection ratings
- CANBus and RS485 communication
- Backed by BigBattery’s 12-year warranty

Specifications
| Specification | Details |
|---|---|
| SKU | K0698 |
| GTIN-12 / UPC | 850061252173 |
| System Voltage | 48V |
| Nominal Voltage | 51.2V |
| Energy Capacity | 10.24kWh |
| Amp-Hour Capacity | 200Ah |
| Battery Chemistry | LiFePO4 |
| Charging Voltage Range | 55.6–57V |
| Maximum Charge Voltage | 57V |
| Operating Voltage Range | 48–57V |
| Suggested Low-Voltage Cutoff | 48–50.8V |
| BMS Cutoff Range | 42–47V |
| Cell Configuration | 16S 2P |
| Maximum Continuous Discharge Current | 200A |
| Maximum Continuous Power | 10,240W |
| Peak Discharge Current | 300A for up to 5 seconds |
| Maximum Charge Current | 200A |
| Charge Temperature Range | 32°F to 113°F / 0°C to 45°C |
| Discharge Temperature Range | -4°F to 140°F / -20°C to 60°C |
| Optimal Discharge Temperature Range | 59°F to 95°F / 15°C to 35°C |
| Storage Temperature Range Above 50% SOC | -4°F to 113°F / -20°C to 45°C for up to 6 months |
| Dimensions | 26.5 × 43.3 × 6.7 in |
| Weight | 273 lb / 123.8 kg |
| Maximum Connections | Up to 16 parallel connections per control box |
| Protection Rating | IP65 / NEMA 4X |
| Communication | CANBus / RS485 |
| Certifications | UL9540A, UL1973 and UN38.3 |
| Warranty | 12 years |
What's In The Box?
- 2 ETHOS Battery Modules
FAQs
What does the ETHOS 2X Expansion Kit add to an existing system?
It adds two ETHOS battery modules and 10.24kWh of energy-storage capacity.
Is this a complete standalone ETHOS system?
No. The product page describes it as an expansion kit for an existing ETHOS system.
What battery chemistry does the kit use?
The ETHOS modules use lithium iron phosphate battery chemistry.
What is the kit’s maximum continuous power?
The listed maximum continuous power is 10,240W.
What warranty covers the ETHOS 2X Expansion Kit?
BigBattery backs the batteries with a 12-year warranty.
