Big Battery 48V ETHOS 10.2KWH (2 Module)

Name: Big Battery 48V ETHOS 10.2KWH (2 Module)
Brand: Big Battery
SKU: K0948
Price: 2780.0 USD
Availability: InStock

BY: Big Battery

SKU: K0948

| Availability: In stock

$4,490.00

$2,780.00

You Save: $1,710.00

Product Highlights

Built for home backup and off-grid power
10,240 Wh capacity for extended backup and off-grid runtime
Purpose-built hardware secures compatible solar modules and racking
Expandable design lets stored power grow with future needs

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Big Battery 48V ETHOS 10.2KWH (2 Module)

STACKABLE POWER STORAGE! BigBattery’s 48V ETHOS is here to revolutionize your home’s power. Our all new ETHOS battery system features a fully stackable and modular design, equipped with its own control box, in-depth LED display, and mounting system.

Whether you’re looking to ensure emergency backup power is available in your cabin or tiny home, or you’re looking to outfit your residential home with a powerful solar system, the ETHOS ensures reliable, efficient power delivery through every season. Equipped with an intelligent BMS featuring an auto-cell balancing function, as well as an IP65-rated casing, the ETHOS ensures long-lasting safety and durability. Plus, with its interactive LED display and CANBus/RS485 communication protocols, you’re always able to monitor the health and status of your power.

The ETHOS is now available in 2-stack (10.24 kWh) and 3-stack (15.36 kWh) configurations, with the ability to expand upon your ETHOS system as needed. It’s time to take your home’s power to the next level! Shop the all-new 48V ETHOS today!

BigBattery 48V ETHOS 10.2kWh (2 Module) Features

High-Capacity Storage – Delivers 10.24kWh of energy (from two 5.12kWh modules), making it ideal for home backup, solar storage, or off-grid systems.

Stackable & Scalable Design – Easily add more modules and scale your system up to 80kWh per control box to meet growing energy demands.

Tier 1 LiFePO4 Cells – Built with the safest, most stable lithium chemistry, providing over 7,000 cycles at 80% Depth of Discharge and a lifespan of 10+ years.

Advanced Battery Management System (BMS) – Monitors voltage, current, and temperature in real-time with passive cell balancing and built-in system protections.

UL-Certified & Fire Protection – Meets UL1973 & UL9540A safety standards and includes a built-in fire extinguishing module for added peace of mind.

Easy, Flexible Installation – Comes with mounting brackets and hardware, features a wall-mountable, modular design, and includes an IP65-rated enclosure for indoor or outdoor use.

BigBattery 48V ETHOS 10.2kWh (2 Module) Applications

Designed for 48V Applications – Fully compatible with most 48V inverters and systems.
Residential Power Systems – Store energy for peak-time use or full-time home power.
Home Solar Systems – Ideal for solar energy storage and daily cycling.
UL-Certified ESS – Use in certified energy storage systems with confidence.
Cabins & Tiny Homes – Compact and expandable for small-space living.
Family Homes & Mansions – Stack multiple batteries to meet large energy demands.
Off-Grid Homesteads – Reliable, autonomous energy where the grid doesn’t reach.
Emergency Power – Ready for power outages and weather-related disruptions.
Whole Home Backup – Scalable to power essential circuits or your full home.
Lead Acid Replacement – Upgrade from outdated batteries to modern lithium power.
Intense Heat & Cold – Operates in extreme environments with wide temp tolerance.

What's Included

Everything you need is included with your product.

1 × ETHOS Control Box
2 × 48V ETHOS 5.12kWh Stackable Battery Module

1 × 10kWh Ethos Controller to Battery Power Cable 31.5" inch (800mm)
User Manual

BigBattery 48V ETHOS 10.2kWh (2 Module) Specifications

Category	Specifications
SKU	KIT0949
UPC	850061252074
System Voltage:	48V
Nominal Voltage:	51.2V
Chemistry:	LiFePO4
kWh Capacity:	10.24 kWh
Ah Capacity:	200 Ah
Charging Voltage Range:	55.6 - 57V
Max Charge Voltage:	58.8V
Operating Voltage Range:	48 – 57V
Suggested Low Voltage Cutoff:	48 – 50.8V
Cell Configuration:	16S 2P
Max Continuous Discharge Current:	200A
Max Continuous Power:	10240W
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)
Dimensions (DxWxH)	6.7 x 26.5 x 43.3 in (170 x 674 x 1100 mm)
Weight	273 lbs (123.8 kg)
Max Connections	Up to (16) parallel connections per control box
Communications	CANBus / RS485
Protection Rating	IP65
Certifications	UL9540, UL9540a, UL1973, & UN38.3

BigBattery 48V ETHOS 10.2kWh (2 Module) Videos

Frequently-Asked Questions

Can I add more modules to this setup?

Yes! The ETHOS is designed to scale up to 80kWh per control box. Just add additional modules as needed.

Is the system compatible with my 48V inverter?

Most likely. The ETHOS works with a wide range of 48V inverters, but always check voltage, current, and communication specs to confirm compatibility.

Is it safe to install outdoors?

Yes. With its IP65-rated enclosure, the ETHOS is weather-resistant and suitable for outdoor or garage installations.

How does the fire suppression system work?

Each module includes a built-in fire-extinguishing module to automatically detect and suppress fire in rare event of thermal failure.

Manual and Specification Sheet

BigBattery 48V ETHOS 10.2kWh (2 Module) Manual

Shipping & Easy Returns

Shipping is free across the Lower 48. No fuel surcharges, no residential fees, and no liftgate charge on freight orders. The price you see is the price you pay. Read our full Shipping Policy here.

Most orders leave the warehouse in 1 to 2 business days and arrive within 3 to 10 business days. We send tracking the moment it ships.

Anything that ships on a pallet goes freight with liftgate and pallet jack included, so the driver gets it off the truck and onto the ground at your address. The carrier will call you directly to schedule a delivery window.

Returns are 30 days from delivery. For freight deliveries, inspect the shipment before you sign for it. If something is damaged in transit, note it on the delivery receipt and we handle the freight claim, not you. Read more about our Returns Policy here.

Why Buy From Us

Buying solar online should not mean guessing your way through the install. Here’s what you get with Off-Grid Source.

We size the system, not just sell it. Call before you order and a sales engineer will check the kit against your actual loads, tell you if you’re buying too much or too little, and list the site-specific parts your install will need.
A+ rated by the Better Business Bureau. Another trust signal that you’re buying from a real company that stands behind the sale.
Free shipping across the Lower 48. No hidden freight charges, residential fees, or liftgate surprises at checkout.
Guaranteed best prices. Find the same product for less elsewhere and we’ll match it.
30-day easy returns. If it is not the right fit, we’ll help you get it sent back.
A real person on the phone. Product questions, sizing, install planning, warranty help: call us at +1 (877) 556-3347.

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I was a DIY solar power wannabe... that is 'til I connected with Manny... The man's a prince! He not only knows his stuff; he walked me through all things electrical. To make sure I had all I needed... he gave me his cell phone # to text him anytime I got confused... nights and weekends included. The prices were very competitive... definitely go with Manny -- you won't go wrong!

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I'm about to go off grid. I called Manny, he walked me through everything so I could truly understand what I needed and never tried to upsell me. He was honest and made a customer for life.

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I would personally like to thank Manny... I purchased the inverter and decided I needed to return it... Manny was very understanding and went out of his way to help me return the product and not even have to pay for shipping return. He gives this company reputation, honor and quality customer service!

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I have been talking with Manny the owner... He has not only helped me design a system but he's been assisting with the install and components. I am super pleased so far with the assistance.

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Big Battery 48V ETHOS 10.2KWH (2 Module)

Product Highlights

Big Battery 48V ETHOS 10.2KWH (2 Module)

BigBattery 48V ETHOS 10.2kWh (2 Module) Features

BigBattery 48V ETHOS 10.2kWh (2 Module) Applications

What's Included

BigBattery 48V ETHOS 10.2kWh (2 Module) Specifications

BigBattery 48V ETHOS 10.2kWh (2 Module) Videos

Frequently-Asked Questions

Manual and Specification Sheet

Shipping & Easy Returns

Why Buy From Us

Why Choose Off Grid Source

Our Customers Tell It Better Than We Do

They Stood By Me

Awesome Service!

Real Person, Honest Service.

Easy Return

Totally Off Grid.

Great Product! Fast Shipping

Excellent Customer Service