Big Battery | 48V ETHOS | 15.3KWH (3 Module)
Overview
STACKABLE POWER SOLUTIONS! BigBattery’s 48V ETHOS is here to transform your home’s energy setup. With a fully modular, stackable design, the ETHOS battery system comes with a control box, an easy-to-read LED display, and a secure mounting system for quick installation.
Whether you’re ensuring reliable backup power for your cabin or tiny home, or looking to upgrade your residential solar system, the ETHOS delivers efficient, year-round power. It features an advanced Battery Management System (BMS) with auto-cell balancing, an IP65-rated casing for durability, and an internal fire suppression system for enhanced safety. Plus, with CANBus and RS485 communication protocols, you can monitor the health of your power system at all times via the interactive LED display.
The ETHOS is available in 2-stack (10.24 kWh) and 3-stack (15.36 kWh) configurations, and can be expanded further as your power needs grow. It’s time to elevate your home’s energy system—shop the new 48V ETHOS today!
Key Features
- Modular Design: Stackable for flexible expansion
- Advanced BMS: Auto-cell balancing for optimal performance
- Safety: IP65 casing and fire suppression system
- Monitoring: Real-time status with CANBus/RS485 communication
- Expandable: Available in 10.24 kWh (2-stack) and 15.36 kWh (3-stack) configurations
What's Included
3 × 48V ETHOS 5.12kWh Stackable Battery Module
1 × ETHOS Control Box
1 × 10kWh Ethos Controller to Battery Power Cable 31.5" inch (800mm)
Specs and Downloads
| System Voltage: | 48V |
| Nominal Voltage: | 51.2V |
| Chemistry: | LiFePO4 |
| kWh Capacity: | 15.36kWh |
| Ah Capacity: | 300Ah |
| Charging Voltage Range: | 55.6 - 57V |
| Max Charge Voltage: | 57V |
| Operating Voltage Range: | 48 – 57V |
| Suggested Low Voltage Cutoff: | 48 – 50.8V |
| Cell Configuration: | 16S 3P |
| Max Continuous Discharge Current: | 250A |
| Max Continuous Power: | 12800W |
| 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: | 387 lb (175.5 kg) |
| Depth: | 6.7 in (170 mm) |
| Width: | 26.5 in (674 mm) |
| Height: | 59.8 in (1520 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Protection Rating: | IP65 |
| Communications: | CANBus / RS485 |
| Certifications: | UL9540, UL9540a, UL1973, & UN38.3 |
Are Solar Guys Pro Authorized Retailers?
Yes! We are proud to be one of the few online retailers who are authorized retailers for every single product we carry!
When Will My Order Ship?
Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.
Frequently Asked Questions
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