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BigBattery 12V HUSKY 2 Lithium Battery 5.12kWh 400Ah | LiFePO4 | Inverter Comms

BRAND:

| SKU:

FHSKY-12051-G2-INV

$1,450.00
Free shipping with delivery between Mar 31 - Apr 07
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BigBattery 12V HUSKY 2 Lithium Battery 5.12kWh 400Ah | LiFePO4 | Inverter Comms

5.12kWh Smart LiFePO₄ Power for RV, Marine & Off-Grid Systems

Take your 12V power system to the next level with the BigBattery 12V HUSKY 2, delivering 5.12kWh of ultra-reliable LiFePO₄ energy in a durable and compact design. Whether you're powering an RV, marine vessel, off-grid cabin, or backup power system, the HUSKY 2 is engineered for dependable performance, safety, and long-term efficiency.

This INV version includes built-in inverter communication support, allowing seamless integration with compatible energy systems for smarter monitoring and operation. Built using Tier 1 lithium iron phosphate cells, the battery provides exceptional cycle life, chemical stability, and consistent output.

Its IP65-rated enclosure protects against dust and water, while the integrated self-heating function enables charging even in cold environments. Combined with an advanced battery management system, the HUSKY 2 delivers reliable all-season energy wherever your off-grid lifestyle takes you.

Key Features:

  • 5.12kWh Energy Capacity: Powerful lithium storage for demanding 12V applications.
  • Inverter Communication Enabled: INV version supports seamless inverter integration.
  • Tier 1 LiFePO₄ Cells: Industry-leading safety, stability, and long cycle life.
  • IP65-Rated Enclosure: Water-resistant and dustproof housing built for rugged environments.
  • Self-Heating Technology: Enables charging in cold-weather conditions.
  • Advanced BMS Protection: Safeguards against voltage, temperature, and current extremes.
  • Plug-and-Play Installation: Includes mounting hardware and terminal cables for quick setup.

Perfect 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 Power & Mobile Backup
  • Light Towers and Digital Signage

What’s Included:

  • 1 × 12V HUSKY 2 – 5.12kWh LiFePO₄ Battery (INV Version)
  • 2 × HUSKY 2 Carrying Handles
  • 2 × L Mounting Brackets
  • 2 × M8 Screws
  • 1 × Red & Black Terminal Rubber Cover
  • 1 × 2AWG 3ft Red & Black Ring-to-Ring Terminal Cables (CBL086)

Specifications

Parameter Details
SKUFHSKY-12051-G2
System Voltage12V
Nominal Voltage12.8V
ChemistryLiFePO4
kWh Capacity5.12kWh
Ah Capacity400Ah
Charging Voltage Range13.9V – 14V
Max Charge Voltage14.4V
Operating Voltage Range12V – 14.4V
Suggested Low Voltage Cutoff12V – 12.7V
BMS Cutoff Range10.5V – 11.75V
Cell Configuration4S
Max Continuous Discharge Current300A
Max Continuous Power5120W
Max Discharge Peak Current350A (Max 5 seconds)
Max Charge Current200A
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 Range59°F – 95°F (15°C – 35°C)
Storage Temperature Range-4°F – 113°F (-20°C – 45°C) (Max 6 months)
Weight95 lb (43.1 kg)
Depth12.6 in (320 mm)
Width18.1 in (460 mm)
Height9.8 in (249 mm)
Max ConnectionsUp to (16) Parallel
Protection RatingIP65 / NEMA 4X
CommunicationsCANBus / RS485
Self-HeatingYes

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 HUSKY 2 Lithium Battery 5.12kWh 400Ah | LiFePO4 | Inverter Comms

$1,450.00