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BigBattery ETHOS 10.23kWh + 1x EG4 18kPV Hybrid Inverter (ESS) | Grid-Tied Home Solar System

BRAND:

| SKU:

K0954

$7,758.00
Free shipping with delivery between Mar 31 - Apr 07
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BigBattery ETHOS 10.23kWh + 1x EG4 18kPV Hybrid Inverter (ESS) | Grid-Tied Home Solar System

Power your home with confidence using the BigBattery 48V 10.24kWh ETHOS System, a compact yet powerful energy storage solution for residential solar, backup power, and off-grid living. This system delivers 10.24kWh of premium LiFePO₄ storage paired with a 12kW EG4 18kPV Hybrid Inverter, ideal for tiny homes, cabins, and small-to-mid-sized houses.

Engineered with Tier 1 LFP cells in a sleek, stackable modular design, the ETHOS system allows for easy expansion and simple installation. Its IP65-rated enclosure provides indoor-safe operation, long-term durability, and reliable performance in diverse environments.

Each battery module includes an advanced integrated Battery Management System (BMS) with automatic cell balancing, thermal monitoring, and built-in fire suppression. The modular architecture scales up to 80kWh per control box, offering flexibility as your energy needs grow.

The included EG4 18kPV Hybrid Inverter delivers 12kW output and supports up to 18,000W of solar PV input via three MPPTs. Features include AC coupling, smart load control, integrated UPS modules for smooth grid-to-battery transitions, and a touchscreen monitoring interface for intelligent energy management.

Key Features:

  • Battery Capacity: 10.24kWh (2 × 5.12kWh ETHOS Modules)
  • System Voltage: 48V
  • Battery Chemistry: LiFePO₄ (Lithium Iron Phosphate)
  • Inverter: 1 × 12kW EG4 18kPV Hybrid Inverter (18kW PV Input, 3 MPPTs)
  • BMS: Advanced cell balancing, thermal protection, fire suppression
  • Enclosure: IP65-rated, stackable, indoor-safe, maintenance-free
  • Cold Weather Ready: Designed for reliable year-round operation
  • Monitoring: Real-time LED system display + inverter touchscreen interface
  • Scalability: Expandable up to 80kWh per control box; inverter parallelable for higher output

Perfect For:

  • Small-to-mid-sized residential homes
  • Tiny homes, cabins, and off-grid properties
  • Whole-home backup for essential loads
  • Emergency preparedness & grid instability
  • Net metering & utility savings
  • Replacing lead-acid battery banks with lithium

What’s Included:

  • 2 × 48V ETHOS 5.12kWh Stackable Battery Modules – FETHS-48051-G1
  • 1 × ETHOS Control Box – CNT060
  • 1 × ETHOS Rack Base – CNT081
  • 2 × ETHOS Parallel Power Cables (4.9 ft) – CBL089
  • 1 × ETHOS Parallel Communication Cable (4.9 ft) – CBL096
  • 1 × EG4 18kPV Hybrid Inverter – INV024

Specifications

Parameter Details
SKU K0954
GTIN-12 (U.P.C.) 850061252005
System Voltage 48V
Nominal Voltage 51.2V
Chemistry LiFePO4
kWh Capacity 10.24kWh
Ah Capacity 200Ah
Cell Configuration 16S 2P
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
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)
Weight 273 lb (123.8 kg)
Depth 6.7 in (170 mm)
Width 26.5 in (674 mm)
Height 43.3 in (1100 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

Understanding Your Power Needs

Power Calculation Guide

Sizing Metric Formula & Example
Energy Consumption (Wh) Formula: Watts × Hours
Example: 60W × 4 hrs = 240 Wh
Battery Capacity (Ah) Formula: Watt-hours ÷ System Voltage (V)
Example: 240 Wh ÷ 12V = 20 Ah
Inverter Size (W) Formula: Total Watts × 1.25 (safety margin)
Example: 300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W) Formula: Sum of all appliance watts used simultaneously
Example: Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery Formula: (Battery Ah × Voltage) ÷ Total Load (W)
Example: (100Ah × 12V) ÷ 240W = 5 hrs

Find Your Power Match

Need / Application System Recommendation
Basic lighting + phone charging Recommended Battery: 50Ah – 100Ah (12V)
Inverter Size: 100W – 200W
Notes: For small backup setups
Home office (laptop, fan, TV) Recommended Battery: 150Ah – 200Ah (12V or 24V)
Inverter Size: 500W – 1000W
Notes: For moderate usage with 4–6 hours of backup
Home backup (fridge, lights) Recommended Battery: 200Ah+ (24V or 48V recommended)
Inverter Size: 1000W – 1500W
Notes: Ideal for longer backups or heavier loads
Business / shop power backup Recommended Battery: 300Ah+ (48V system)
Inverter Size: 2000W – 3000W
Notes: Suitable for commercial setups or extended power outages

Why Shop With Us

  • Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products backed by full manufacturer warranties.
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  • 30-Day Hassle-Free Returns: Changed your mind? Enjoy a simple 30-day return process for peace of mind.
  • Real Human Support, 7 Days a Week: Reach us by phone, email, or live chat — no bots, no overseas call centers, just experts who know off-grid power systems.
  • Expert Energy Guidance: Our solar and backup energy specialists are here to help with system design, product questions, and installation tips.
  • USA-Based Service: Local, knowledgeable, and friendly support right here in the U.S.
  • Secure Payments: Shop confidently with encrypted, secure checkout protecting your personal and payment information.
  • Built for Energy Independence: Whether powering a cabin, prepping for emergencies, or going off-grid, our products are chosen for performance, reliability, and sustainability.

BigBattery ETHOS 10.23kWh + 1x EG4 18kPV Hybrid Inverter (ESS) | Grid-Tied Home Solar System

$7,758.00