BigBattery 12V 3X HUSKY 2 Lithium Battery Kit – 15.36kWh Ultra-Reliable Power for RVs, Boats & Off-Grid Living
Go further, stay longer, and power more with the 12V 15.36kWh HUSKY 2 Lithium Battery Kit, BigBattery’s most energy-dense 12V solution to date. Designed for serious off-grid enthusiasts, this triple-pack setup delivers uncompromising performance for RVs, camper vans, trolling motors, marine systems, and mobile applications.
Each HUSKY 2 battery packs 5.12kWh of reliable LiFePO₄ storage—giving you a total of 15.36kWh of high-efficiency energy in a compact, plug-and-play format. Built with Tier 1 LFP cells, these batteries ensure long cycle life, maximum safety, and consistent performance in extreme weather.
Housed in an IP65-rated, vibration-resistant case and equipped with a self-heating function for cold-weather charging, the HUSKY 2 is ready to power your adventures year-round. And with advanced BMS protections, automatic cell balancing, and full CANBus + RS485 communications, you’re always in control with real-time monitoring and safety built in.
Whether you’re replacing aging lead-acid systems or upgrading for serious off-grid power, the 12V 3X HUSKY 2 Kit is your no-compromise solution.
Key Features:
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Massive 15.36kWh Capacity – Three 5.12kWh LiFePO₄ batteries for extended runtime
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Plug-and-Play System – All required cables and terminals included
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IP65-Rated Durable Casing – Water-resistant and rugged for outdoor use
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Self-Heating Function – Enables cold-weather charging and performance
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Tier 1 LiFePO₄ Cells – Industry-leading safety and lifespan
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Advanced BMS – With over/under-voltage, temperature, and current protections
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CANBus & RS485 Communications – Real-time battery data visibility and inverter compatibility
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Zero Maintenance Design – Fully sealed, reliable power with no upkeep needed
Ideal For:
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Class A, B, & C RVs
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Camper Vans & Tow-Behind Trailers
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Boats, Yachts & Marine Systems
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Food Trucks & Commercial Vehicles
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Off-Grid Homes & Cabins
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Emergency Backup Systems
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Light Towers & Mobile Signage
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Lead-Acid Battery Replacement
What’s Included:
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3 × 12V HUSKY 2 INV – 5.12kWh LiFePO₄ Batteries (FHSKY-12051-G2-INV)
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2 × 4AWG (Black and Red) 21" Ring-to-Ring Terminal Cables (CBL092)
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 |
Why Buy From Us
Why Buy From Ecogrid Supply?
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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
