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BigBattery ETHOS | 48V – 5.1kWh | UL1973 | Home Battery Backup LFP
BigBattery ETHOS | 48V – 5.1kWh | UL1973 | Home Battery Backup LFP - Image 2
BigBattery ETHOS | 48V – 5.1kWh | UL1973 | Home Battery Backup LFP - Image 3

Product Summary:

Configurable up to 80+ kWh.

The BigBattery ETHOS is a modular 48V lithium battery system engineered for reliable, long-lasting energy storage in UL-certified configurations. Each battery integrates seamlessly with the ETHOS controller for safe operation, intelligent management, and scalable capacity as your needs grow. Backed by a 12-Year Warranty, ETHOS delivers a high-performance, maintenance-free platform for dependable energy independence.

BigBattery ETHOS | 48V – 5.1kWh | UL1973 | Home Battery Backup LFP

$2,990.00
SKU# K0949

Battery Selected

2× BigBattery ETHOS

Total Capacity

10.24 kWh

Choose Your Inverter Option*

EG4 18kPV EG4 FlexBoss18 EG4 FlexBoss21 None

Choose Your Battery Option*

BigBattery ETHOS EG4 280Ah All Weather EG4 280Ah Indoor EG4 314Ah Indoor None

Choose Your Inverter Option*

EG4 6000XP EG4 12000XP None

Choose Your Battery Option*

BigBattery NEXUS BigBattery ETHOS BigBattery HUSKY2 INV EG4 280Ah All Weather EG4 280Ah Indoor

Choose Your Battery Quantity*

Standard

Large

Complex

SKU: K0949-V Category:
30% Federal Tax Credit AvailableThis system qualifies for federal rebates.
Learn More Here
Quantity:

Compatible Accessories & Additional Add-ons

ETHOS- home battery backup
ETHOS- lithium battery storage
ETHOS- solar battery
ETHOS- lithium ion battery
ETHOS- lithium battery
ETHOS- lithium battery storage

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Battery Downloads

SKU#:K0949, K0950, K0951, K0953, K0150, K0151
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL9540A Certificate:DownloadDOWNLOAD
UL1973 Certificate:DownloadDOWNLOAD
UN38.3 Certificate:DownloadDOWNLOAD
Safety Data Sheet:DownloadDOWNLOAD
CEC Listing- BigBattery ETHOS:Go to linkGO TO LINK

Battery Specifications

GTIN-12 (U.P.C.):850061252005
System Voltage:48V
Nominal Voltage:51.2V
Chemistry:LiFePO4
kWh Capacity:10.24kWh (2x), 15.36 kWh (3x), 20.48 kWh (4x), 30.72 kWh (6x), 40.96 kWh (8x), 46.08 kWh (9x)
Ah Capacity:200Ah
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 
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

BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade. For more information, please visit our policy page

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