48V ETHOS 15.3KWH (3 Module)


10 Year Warranty

Applied To Batteries Only


48V ETHOS 15.3KWH (3 Module)


Included Components

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

Compatible Accessories

SKU K0950 Category SKU#:

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 advanced BMS featuring an auto-cell balancing function, an IP65-rated casing, as well as an internal fire suppression system, 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 certified to the highest level, including UN9540, UL1973, and CE certifications, affording the ability to grid-tie your power system and capitalize on net-metering programs and other tax incentives.


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!


10 Year Savings Vs Lead-Acid


the weight and space




Safe & Reliable 

Tech Specs

GTIN-12 (U.P.C.):850061252166
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
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
Communications:CANBus / RS485
Certifications:UL9540, UL9540a, UL1973, & UN38.3
Spec Sheet Download:
User Manual Download:
UL9540 Certification Download:
Safety Data Sheet Download:

Designed For 48V Applications

For more information or larger quantity inquiries, visit our B2B page or please call our sales team at #(818) 280-3091

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