The 48V ETHOS | 20.2kWh (4 Module) system by BigBattery is a powerful and dependable solution for residential energy storage. Whether you’re living off-grid, powering a large cabin, or preparing for outages, this system delivers clean and consistent energy every day.

Built for Performance and Flexibility

This 20.2kWh configuration is perfect for homes that need more energy storage. The stackable, modular design makes it easy to expand if your energy demands grow over time. The system is protected by a durable IP65-rated enclosure that stands up to harsh weather and indoor environments.

Advanced Safety and Monitoring

The ETHOS system is equipped with an advanced Battery Management System (BMS) that provides auto cell-balancing for long-term battery health. It also includes an internal fire suppression system for added protection.

You can easily keep an eye on system performance using the interactive LED display on the control box, with CANBus and RS485 communication protocols for real-time monitoring and system updates.

Key Features:

Big Battery | 4x 48V ETHOS (20.48kWh) Home Battery Backup

• 20.2kWh Battery Capacity (4 Modules) – Ideal for off-grid homes, cabins, or emergency backup

• 48V System Voltage – Reliable and compatible with solar and hybrid systems

• Modular & Stackable – Expandable to meet future energy needs

• Advanced BMS – With cell balancing and fire suppression built-in

• Weather-Resistant (IP65) – Long-lasting protection in any environment

• Live System Monitoring – LED control box with CANBus & RS485 for real-time insights

• Works On-Grid or Off-Grid – Flexible for any home setup

Power Your Home with Confidence

Whether you’re optimizing a solar setup or preparing for power outages, the 48V ETHOS | 20.2kWh (4 Module) system gives you reliable, scalable power you can count on. Take control of your energy and enjoy peace of mind with advanced safety features and smart monitoring.

4 × 48V ETHOS 5.12kWh Stackable Battery Module
1 × ETHOS Control Box
1 × ETHOS RACK BASE
2 × Ethos Parallel Power Cable 4.9 ft (1500mm)
1 × Ethos Parallel Comm Cable 4.9 ft (150cm)