BigBattery 48V 20.48kWh 4X HUSKY 2 Lithium Battery KIT – EG4 12K Off-Grid Inverter
Power through any environment with the BigBattery 48V 4X HUSKY 2 Kit, featuring an impressive 20.48kWh of LiFePO₄ storage and paired with the advanced EG4 12kW (24kPV) Off-Grid Inverter. This all-in-one energy solution is engineered for heavy-duty off-grid living, full-scale mobile systems, or robust emergency backup power.
The HUSKY 2 is BigBattery’s most energy-dense 48V lithium solution to date, equipped with Tier 1 LFP cells and built to withstand even the harshest conditions. From boondocking in the backcountry to safeguarding your home during outages, this system delivers dependable power when and where you need it.
Each HUSKY 2 module comes packed with advanced features: a self-heating function for cold weather charging, IP65-rated, vibration-resistant housing, and a smart BMS that offers auto-balancing, thermal regulation, and complete protection against over/under voltage and overcurrent events. With parallel CANBus and RS485 communication protocols, your power system remains fully visible and manageable.
This kit is paired with the powerful EG4 12000XP Inverter, supporting up to 24,000W of PV input and delivering 12kW of split-phase power. Designed for serious solar and off-grid performance, the 12000XP offers a user-friendly LCD display, UPS integration, smart load control, built-in circuit breakers, and parallel capability up to 72kW, making it the perfect inverter for high-demand applications.
Key Features:
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Total Capacity: 20.48kWh (4 × 5.12kWh HUSKY 2 Modules)
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System Voltage: 48V
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Inverter Power: 12kW split-phase (24kW PV input, model 12000XP)
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Battery Chemistry: LiFePO₄ (Lithium Iron Phosphate)
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Cold Weather Ready: Built-in self-heating for sub-zero charging
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Protection: Smart BMS with thermal management & comprehensive safeguards
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Enclosure: Rugged IP65-rated, vibration-resistant casing
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Monitoring: CANBus, RS485, and real-time LCD inverter display
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Expandability: Inverter can parallel up to 72kW
Perfect For:
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Off-Grid Homes & Cabins
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RVs, Vans, and Commercial Vehicles
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Food Trucks & Mobile Businesses
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Emergency Backup Power
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Solar Power Systems
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Lead Acid Battery Replacements
What’s Included:
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4 × 48V HUSKY 2 INV Battery Modules – FHSKY-48051-G2-INV
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1 × EG4 12kW (24kPV) Off-Grid Inverter – INV030
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3 × Parallel Communication Cables – CBL099
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3 × 4AWG (Black & Red) 21” Ring-to-Ring Terminal Cables – CBL092
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1 × 2AWG (Black & Red) 3FT Ring-to-Ring Terminal Cable – CBL086
Specifications
Product Specifications
| SKU: |
FHSKY-48051-G2 |
| System Voltage: |
48V |
| Nominal Voltage: |
51.2V |
| Chemistry: |
LiFePO4 |
| kWh Capacity: |
5.12kWh |
| Ah Capacity: |
100Ah |
| Charging Voltage Range: |
55.6 – 57V |
| Max Charge Voltage: |
58.8V |
| Operating Voltage Range: |
48 – 57V |
| Suggested Low Voltage Cutoff: |
48 – 50.8V |
| BMS Cutoff Range: |
42 – 47V |
| Cell Configuration: |
16S |
| Max Continuous Discharge Current: |
150A |
| Recommended Continuous Discharge Current: |
100A |
| Max Continuous Power: |
7500W |
| Recommended Continuous Power: |
4000W |
| Max Discharge Peak Current: |
225A (Max 5 seconds) |
| Max Charge Current: |
100A |
| Charge Temperature Range: |
-4°F – 113°F (-20°C – 45°C) |
| Discharge Temperature Range: |
-4°F – 122°F (-20°C – 50°C) |
| Optimal Discharge Temperature Range: |
59°F – 95°F (15°C – 35°C) |
| Storage Temperature Range: |
-4°F – 122°F (-20°C – 50°C) (Max 6 months) |
| Weight: |
100 lb (45.4 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 (Parallel only) |
| Self-Heating: |
Yes |
| Spec Sheet: |
Spec Sheet |
| User Manual: |
User Manual |
| Safety Data Sheet: |
Safety Data Sheet |
| CE Certificate: |
CE Certificate |
| UN38.3 Certificate: |
UN38.3 Certificate |
Inverter Specifications
AC Input & Output
| Nominal AC Voltage: |
120/240VAC | 120/208VAC (L1/L2/N required) |
| Frequency (Grid | Generator): |
60 Hz (Default) | 50 Hz (Configurable) |
| Max. Continuous AC Current (Grid | Generator): |
100A @ 240VAC | 62.5A @ 240VAC |
| Max. AC Input Power: |
24000W |
| AC Bypass (Grid | Generator): |
100A | 90A |
| Recommended Generator Capacity: |
6000W – 15000W |
| Output Voltage: |
120/240VAC | 208VAC |
| Output Frequency: |
60 Hz (Default) | 50 Hz (Configurable) |
| Max. Continuous Output Current: |
50A @ 240VAC | 57.7A @ 208VAC |
| Nominal Output Power (without PV): |
12000W @ 240V | 12000W @ 208V |
| Nominal Output Power (with PV): |
12000W @ 240V | 12000W @ 208V |
| Max. Continuous Wattage: |
12000W (L1/L2) | 6000W (L1-N/L2-N) |
| Surge Capacity: |
18000W (5 sec) | 15000W (10 sec) |
| Power Factor: |
0.99 |
| Total Harmonic Distortion: |
<3% |
| Switching Time: |
<10 ms (Single) | <20 ms (Parallel) |
PV Input
| No. of MPPTs (Inputs per MPPT): |
2 (2) |
| Max. Input Current: |
35A / 35A |
| Max. Short Circuit Input Current: |
44A / 44A |
| DC Input Voltage Range: |
100 – 480VDC |
| Min. Start Up Voltage: |
100VDC |
| MPPT Operating Voltage Range: |
120 – 385VDC |
| Nominal MPPT Voltage: |
320VDC |
| Max. Utilized PV Power: |
24000W (12000W per MPPT) |
| Max. Recommended PV Input: |
28000W (14000W per MPPT) |
| Max. Efficiency: |
99% (MPPT) | 93.5% (PV to Loads) | 92.8% (PV to Battery) | 92.5% (AC to Battery) | 90.2% (Battery to Loads) |
| Idle Consumption (Standby Mode): |
<70W |
Battery
| Nominal Voltage: |
48VDC |
| Battery Voltage Range: |
46.4 – 60VDC |
| Max. Charge / Discharge Current: |
250A |
| Max. Charge / Discharge Power: |
12000W |
| DC Cut-Off Voltage: |
59VDC |
| Recommended Battery Capacity per Inverter: |
>400Ah |
Operating Environment & Dimensions
| Max. Parallel Connections: |
6 |
| Protection Rating: |
IP20 |
| Communication Interface: |
RS485 / CANBus / WiFi |
| Operating Temperature (Full Load): |
32ºF – 113ºF (0ºC – 45ºC) |
| Storage Temperature: |
5ºF – 140ºF (-15ºC – 60ºC) |
| Altitude: |
<6,561 ft (2000 m) |
| Relative Humidity (Non-Condensing): |
5 – 95% |
| Typical Noise Emission: |
<60 dB |
| Cooling Method: |
Fan |
| Weight: |
104.7 lbs (47.5 kg) |
| Depth: |
5.9 in (150 mm) |
| Width: |
20.9 in (530 mm) |
| Height: |
34.25 in (870 mm) |
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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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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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
