Description
Big Battery Husky 2 – 400Ah / 5.12 kWh LiFePO₄ Battery
The Big Battery Husky 2 is a next-generation 12V LiFePO₄ battery built for maximum power density, long cycle life, and reliable off-grid performance. Engineered to deliver 400Ah (5.12 kWh) of clean, stable energy, this battery is ideal for RVs, marine systems, solar backup, and commercial mobile applications that demand deep-cycle durability and high output.
Key Features
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High-Capacity Power Block: 400Ah and 5.12 kWh energy storage for large-scale systems.
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Advanced LiFePO₄ Chemistry: Offers superior safety, high discharge performance, and long life.
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Integrated Smart BMS: Provides over-voltage, short circuit, and temperature protection with CANBus/RS485 communication.
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Durable IP65 Enclosure: Built to withstand dust, moisture, and vibration in demanding environments.
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High Efficiency and Longevity: Over 95 % round-trip efficiency and up to 8,000 charge cycles.
Product Overview
The Husky 2 redefines single-module energy storage with its powerful 12V / 400Ah LiFePO₄ configuration. It stores 5.12 kWh of usable energy — equivalent to four standard 12V / 100Ah batteries — while maintaining a smaller footprint and lighter total weight.
Its integrated Battery Management System (BMS) continuously monitors voltage, temperature, and current to ensure balanced charging and optimal performance. The Husky 2’s robust aluminum casing and IP65 protection rating make it suitable for indoor or semi-outdoor installation.
Engineered for off-grid, mobile, and hybrid applications, the Husky 2 easily powers high-load systems such as inverters, refrigeration, pumps, and onboard electronics. Its high discharge capacity and fast charge recovery ensure consistent performance under heavy use, whether for RV adventures, marine energy systems, or residential backup storage.
This unit delivers exceptional reliability and peace of mind — designed, tested, and supported by one of the most trusted names in LiFePO₄ technology.
Technical Specifications
| Specification | Details |
|---|---|
| Model | Husky 2 |
| Nominal Voltage | 12 V |
| Capacity | 400 Ah / 5.12 kWh |
| Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Charging Voltage Range | 13.9 – 14.0 V |
| Maximum Charge Voltage | 14.4 V |
| Operating Voltage Range | 12 – 14.4 V |
| Suggested Low Voltage Cutoff | 12.0 – 12.7 V |
| Continuous Discharge Current | High output for inverter and heavy loads |
| Peak Discharge Current | 300 A (≤ 5 seconds) |
| Round-Trip Efficiency | ≥ 95 % |
| Communication | CANBus / RS485 |
| Enclosure Rating | IP65 (dust-tight, water-resistant) |
| Weight | Approximately 95 lb (43 kg) |
| Dimensions | 320 mm D × 460 mm W × 249 mm H |
| Cycle Life | 4,000 – 8,000 cycles @ 80 % DoD |
| Operating Temperature | –20 °C to 60 °C (–4 °F to 140 °F) |
| Warranty | 10 years |
| Certifications | UL / UN38.3 / RoHS-compliant design |
Included Free in Box
12V Husky 2 – LiFePO₄ – 400Ah – 5.12 kWh
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(2) Husky 2 Carrying Handles
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(2) L Mounting Brackets and Cross Module Mounting Plate
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(2) M8 Screws
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(1) Red and Black Terminal Rubber Cover
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(1) CBL100 – 4 AWG 3 ft Ring-to-Ring Terminal Cable
Applications
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Off-Grid Homes and Solar Systems
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RVs and Camper Vans
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Marine and Boating Power Systems
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Backup Energy Storage for Homes or Shops
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Commercial and Industrial Power Modules
Specs & Info