BigBattery 12V 4X HUSKY 2 Lithium Battery KIT – Victron | 20.48kWh Ultimate Off-Grid Power System
When you need the most robust, high-capacity, all-weather-ready 12V lithium setup available, the 12V 4X HUSKY 2 Kit – Victron Edition delivers unmatched performance, durability, and power density in one complete, plug-and-play system.
Packing a total of 20.48kWh, this kit includes four of BigBattery’s top-tier 12V HUSKY 2 batteries, built with Tier 1 LiFePO₄ cells, advanced Battery Management System (BMS) protections, self-heating functionality, and an IP65-rated casing. Whether you're traveling across country, braving winter expeditions, or powering a marine adventure, the HUSKY 2 is engineered to outperform the competition—safely and reliably.
To make this system complete, we pair the HUSKY 2s with a premium Victron MultiPlus-II 12V inverter/charger, providing PowerAssist and PowerControl up to 100A, pure sine wave output, and seamless WiFi-enabled system monitoring through the Victron Cerbo GX. Get real-time visibility, ultimate system control, and proven Victron reliability—right out of the box.
Key Features:
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Massive 20.48kWh Capacity – Perfect for large RVs, yachts, off-grid homes, or commercial setups
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IP65-Rated Enclosure – Dustproof, water-resistant, and vibration-ready
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Smart BMS – Offers cell auto-balancing, temperature protection, and over/under voltage safeguards
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Self-Heating Tech – Enables cold-weather charging and year-round performance
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Victron MultiPlus-II Inverter – With pure copper transformer, LED indicators, and advanced 100A assist
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Victron Cerbo GX Monitoring – Real-time data from anywhere via WiFi
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Comprehensive Communication – CANBus & RS485 supported for total system integration
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Plug-and-Play Installation – All components and cables included for fast setup
Ideal Applications:
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Class A, B & C Motorhomes
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Off-Grid Cabins & Tiny Homes
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Camper Vans & Towable Trailers
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Boats, Yachts, & Marine Systems
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Food Trucks & Mobile Businesses
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Backup Power for Emergency & Critical Loads
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Commercial Vehicles & Remote Workstations
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Light Towers, Signage, and Infrastructure
What’s Included:
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4 × 12V HUSKY 2 INV Batteries – 5.12kWh each (Model: FHSKY-12051-G2-INV)
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1 × Victron MultiPlus-II 12V Inverter/Charger – (Model: INV017)
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1 × Victron Cerbo GX – Smart control interface (Model: INV019)
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1 × Victron COMM Cable – (Model: CBL098)
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3 × 4AWG 21" Ring to Ring Terminal Cables – (Model: CBL092)
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3 × Parallel Communication Cables – (Model: CBL099)
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1 × 2AWG 3FT Ring to Ring Terminal Cable – (Model: CBL086)
Specifications
Product Specifications
| SKU: |
FHSKY-12051-G2 |
| System Voltage: |
12V |
| Nominal Voltage: |
12.8V |
| Chemistry: |
LiFePO4 |
| kWh Capacity: |
5.12kWh |
| Ah Capacity: |
400Ah |
| Charging Voltage Range: |
13.9V – 14V |
| Max Charge Voltage: |
14.4V |
| Operating Voltage Range: |
12V – 14.4V |
| Suggested Low Voltage Cutoff: |
12V – 12.7V |
| BMS Cutoff Range: |
10.5V – 11.75V |
| Cell Configuration: |
4S |
| Max Continuous Discharge Current: |
300A |
| Max Continuous Power: |
5120W |
| Max Discharge Peak Current: |
350A (Max 5 seconds) |
| Max Charge Current: |
200A |
| Charge Temperature Range: |
-4°F – 113°F (-20°C – 45°C) |
| Discharge Temperature Range: |
-4°F – 131°F (-20°C – 55°C) |
| Optimal Discharge Temperature Range: |
59°F – 95°F (15°C – 35°C) |
| Storage Temperature Range: |
-4°F – 113°F (-20°C – 45°C) (Max 6 months) |
| Weight: |
95 lb (43.1 kg) |
| Depth: |
12.6 in (320 mm) |
| Width: |
18.1 in (460 mm) |
| Height: |
9.8 in (249 mm) |
| Max Connections: |
Up to (16) Parallel |
| Protection Rating: |
IP65 / NEMA 4X |
| Communications: |
CANBus / RS485 |
| Self-Heating: |
Yes |
| Spec Sheet Download: |
Spec Sheet |
| User Manual Download: |
User Manual |
| Safety Data Sheet Download: |
Safety Data Sheet |
| Inverter Spec Sheet Download: |
Inverter Spec Sheet |
Why Buy From Us
Why Buy From EcoGridSupply?
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Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products with full manufacturer warranties.
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Fast, Reliable Shipping: All items ship from our U.S. warehouses with quick and dependable freight options to keep your project on track.
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30-Day Hassle-Free Returns: Change your mind? No worries — enjoy a simple 30-day return process for peace of mind.
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Real Human Support, 7 Days a Week: Reach us by phone, email, or live chat — no bots, no overseas call centers, just real people who know off-grid power systems.
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Expert Energy Guidance: Our solar and backup energy specialists are ready to help you with design, planning, product questions, and installation tips.
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USA-Based Service: Our team proudly operates here in the United States, providing local, knowledgeable, and friendly support.
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Secure Payments: Shop confidently with our encrypted, secure checkout to protect your personal and payment information.
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Built for Energy Independence: Whether you’re powering a cabin, prepping for emergencies, or going off-grid, our products are selected for performance, reliability, and sustainable operation.
Buying Guide
