Skip to content

Big Battery | 12kW | 15.3kWh | ETHOS Energy Storage System (ESS)

SKU K0955
Save $790.00 Save $790.00
Original price $10,690.00
Original price $10,690.00 - Original price $10,690.00
Original price $10,690.00
Current price $9,900.00
$9,900.00 - $9,900.00
Current price $9,900.00

Overview

REVOLUTIONIZING RESIDENTIAL ENERGY STORAGE! BigBattery's 48V ETHOS systems are here with a 15kWh indoor configuration, the perfect solution for grid-tied power in your tiny home, cabin, or family residence. With cutting-edge features, unmatched safety, and reliable performance, the ETHOS system is built to meet all your home power needs.

Designed for flexibility, the ETHOS system features a stackable, modular design, making it easy to expand as your energy needs grow. Installation is a breeze with all the necessary hardware included. The system is housed in an IP65-rated enclosure for protection against dust and water, and features an internal fire suppression system for added peace of mind. The advanced Battery Management System (BMS) ensures optimal performance with auto cell-balancing, keeping your system running smoothly and safely.

The ETHOS comes with an intuitive control box that includes an interactive LED display, along with CANBus and RS485 communication protocols to provide real-time monitoring of your system’s health and performance.

For a complete home power solution, we pair the ETHOS with the advanced 12000W Lux inverter, which includes a LCD touch screen, 3 MPPT inputs, and an integrated UPS module for seamless on-grid and off-grid switching. It can support PV arrays up to 18000W and features smart load control, AC coupling, and peak shaving to optimize power use, protect against grid instability, and reduce your energy costs.

Whether you need reliable emergency backup power, want to optimize your solar system, or save money with net metering and tax incentives, the ETHOS system has you covered. Take control of your home’s energy today with the 48V ETHOS.

Key Features:

  • 15kWh Indoor Configuration: Ideal for small homes and grid-tied systems
  • Stackable & Modular: Easily expandable to suit your energy needs
  • Advanced BMS: Auto cell-balancing and internal fire suppression
  • IP65-rated: Weatherproof for long-lasting protection
  • Real-time Monitoring: LED display with CANBus/RS485 communication
  • 12000W Lux Inverter: 3 MPPT inputs, LCD touch screen, and UPS module for seamless switching
  • PV Array Support: Can handle up to 18000W of PV power


What's Included

3 × 48V ETHOS 5.12kWh Stackable Battery Module
1 × ETHOS Control Box
1 × LUXPower 12kW Hybrid Inverter
1 × 15kWh Ethos Controller to Battery Power Cable 4ft (1220mm)

Specs and Downloads

Spec Sheet

Inverter Spec Sheet

SKU: K0955
GTIN-12 (U.P.C.): 850061252098
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
BMS Cutoff Range: 42 - 47V
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 / NEMA 4X
Communications: CANBus / RS485
Certifications: UL9540, UL9540A, UL1973, & UN38.3


User Manual
UL9540 Certification
UL1973 Certification
Safety Data Sheet

Inverter

User Manual
Rapid ShutDown Certificate
UL1741 Certificate
IEEE1547 Certificate

USA Based Tech & Customer Support Got a question? Speak to our USA based tech & customer support team: 571-350-0146
#1 DIY Solar Authorized Retailer
Fast & Safe Shipping
Sales Tax Free
Authorized Dealer Warranty
#1 DIY Solar Authorized Retailer
Fast & Safe Shipping
Sales Tax Free
Authorized Dealer Warranty
The #1 Authorized DIY Solar Retailer

We're proud to be the USA's #1 Authorized retailer for high quality DIY solar brands

Fast Shipping

Experience the fastest shipping times you've seen in the entire solar industry.

Real Human Support

Questions? Give us a call to speak with our solar expert: (571) 350-0146

Frequently Asked Questions

Get your 30% Tax Solar Credit!

Get your 30% Tax Solar Credit!

Unlock substantial savings with the government's Solar Tax Credit, which offers a robust 30% deduction on the installation costs of solar systems. This attractive incentive is your ticket to leveraging solar energy's eco-friendly potential while enjoying the financial benefits.

At Solar Guys Pro, our commitment is to you. Please be reminded that our expertise does not extend to tax advice. Nonetheless, our dedicated staff is eager to guide you through the process and ensure you capitalize on this exceptional offer.

Contact us now to learn more!

Save With Exclusive Deals!

Save with discounts and get exclusive deals when you sign up with our newsletter!

USA Based Tech & Customer Support Got a question? Speak to our USA based tech & customer support team: 571-350-0146
#1 DIY Solar Authorized Retailer
Fast & Safe Shipping
Sales Tax Free
Authorized Dealer Warranty