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BigBattery 12V 2X HUSKY 2 Lithium Battery Kit

BRAND:

| SKU:

K0747

$3,599.99
Free shipping with delivery between Mar 31 - Apr 07
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BigBattery 12V 2X HUSKY 2 Lithium Battery Kit

10.24kWh LiFePO₄ Power System for RV, Marine & Off-Grid Applications

Looking to supercharge your 12V power system? The BigBattery 12V 10.24kWh HUSKY 2 LiFePO₄ Kit delivers industrial-strength energy in a compact, plug-and-play package—perfect for RVs, camper vans, marine systems, and off-grid backup installations.

Each HUSKY 2 battery provides 5.12kWh of dependable lithium power, and this dual-battery kit delivers a combined 10.24kWh of capacity—more than enough to support extended travel, marine adventures, or remote off-grid living.

Built with Tier 1 LiFePO₄ cells, integrated self-heating technology, and a high-performance battery management system (BMS), the HUSKY 2 is designed for reliable year-round performance. Its IP65-rated enclosure protects against harsh environments, while automatic cell balancing and CANBus + RS485 communication ensure safe operation and full system visibility.

Installation is fast and simple with the included cables, and the maintenance-free lithium design eliminates the hassle of traditional lead-acid batteries. Whether upgrading your RV power bank or modernizing a marine electrical system, the HUSKY 2 Kit delivers dependable energy wherever your adventures take you.

Key Features:

  • Massive 10.24kWh Total Capacity: Two 5.12kWh lithium batteries provide extended energy storage.
  • Inverter-Ready INV Version: Includes CANBus and RS485 communication protocols for smart system integration.
  • Tier 1 LiFePO₄ Cells: Long-lasting, stable, and safe lithium battery chemistry.
  • IP65-Rated Housing: Dustproof and water-resistant enclosure built for harsh environments.
  • Self-Heating System: Supports reliable charging in cold-weather conditions.
  • Advanced Battery Management System: Automatic cell balancing with voltage, temperature, and current protections.
  • Plug-and-Play Installation: Simple wiring setup with no ongoing maintenance required.

Ideal For:

  • Lead-Acid Battery Replacement
  • Class A, B & C RVs
  • Camper Vans & Tow-Behind Trailers
  • Boats, Yachts and Marine Systems
  • Food Trucks and Commercial Vehicles
  • Emergency Backup Power Systems
  • Light Towers, Digital Signage and Mobile Installations

What’s Included:

  • 2 × 12V HUSKY 2 INV Lithium Batteries – 5.12kWh each (Model FHSKY-12051-G2-INV)
  • 1 × 4AWG 21" Ring-to-Ring Terminal Cable Set (Red & Black) – Model CBL092

Specifications

Parameter Details
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

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.
  • Fast, Reliable Shipping: Shipped from U.S. warehouses with quick, dependable freight options — keeping your project on track.
  • 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 12V 2X HUSKY 2 Lithium Battery Kit

$3,599.99