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BigBattery 48V 4X Husky 2 - EG4 12K Off-Grid Inverter Power Kit (12kW | 20.4 kWh)

SKU K0707
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Original price $12,045.00
Original price $12,045.00 - Original price $12,045.00
Original price $12,045.00
Current price $10,850.00
$10,850.00 - $10,850.00
Current price $10,850.00

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Refunds & Returns at OffGrid Lux

We're committed to your happiness with every purchase. Need assistance? Just reach out. You have 30 days from delivery to return items in their original condition. We process refunds promptly, usually within 3 business days of receiving your return.

For more info, check out our full Returns & Refunds Policy here.

BigBattery 48V 4X Husky 2 - EG4 12K Off-Grid Inverter Power Kit (12kW | 20.4 kWh)

Experience robust and reliable off-grid power with the BigBattery 48V 4X Husky 2 Kit, delivering 20.48kWh of energy storage paired with the powerful 12000XP split-phase inverter from EG4. Engineered for ultimate versatility and performance, this solution is perfect for off-grid power systems, emergency backup, or mobile power setups in RVs, camper vans, and remote homes.

Built on BigBattery’s most energy-dense 48V platform to date, the HUSKY 2 batteries feature Tier 1 LFP cells, providing exceptional reliability and durability across a wide temperature range. The system includes advanced battery management protections against over/under voltage and current, alongside a thermal management system that ensures reliable operation even in harsh winter conditions.

The HUSKY 2’s IP65-rated, vibration-resistant casing guarantees durability, while its self-heating function supports cold-weather charging to keep you powered year-round. Communication is seamless through parallel CANBus & RS485 protocols, allowing you to monitor battery health and performance effortlessly.

The EG4 12000XP inverter complements the system perfectly, supporting up to 24,000W PV arrays with a rated power output of 12,000W. Featuring an LCD display for real-time monitoring, advanced parallel capability up to 72kW, built-in circuit breakers, smart load control, and integrated UPS functionality, the inverter delivers a reliable and adaptable power management experience for off-grid living or backup scenarios.

Equipped with the 48V HUSKY 2 and EG4 12K inverter, you’ll save space and weight without compromising power or reliability. Be ready for any power challenge, day or night. Shop the all-new BigBattery 48V HUSKY 2 & Kits today.

What's included?

  • 4 × 48V HUSKY 2 - LiFePO4 - 100Ah - 5.12kWh
  • 1 × EG4 12kW (24kPV) OFF-GRID INVERTER
  • 3 × 4AWG (Black and Red) 21 inches Ring to Ring Terminal Cable
  • 1 × 2AWG (Black and Red) 3FT Ring to Ring Terminal Cable
  • 3 × Parallel Comm Cable

Key Features

  • Battery Configuration: 4x 48V HUSKY 2 LiFePO4 batteries (total 20.48kWh)

  • Inverter: EG4 12000XP split-phase inverter, 12,000W rated power

  • PV Array Support: Up to 24,000W

  • BMS: Advanced protections including Over/Under Voltage, Over Current, thermal management

  • Self-Heating Function: Supports cold weather charging

  • Enclosure: IP65-rated, vibration-resistant casing

  • Communication Protocols: Parallel CANBus & RS485

  • Inverter Features: Parallel capability up to 72kW, built-in circuit breakers, smart load control, UPS modules, LCD display

  • Applications: Off-grid homes, emergency backup, RVs, camper vans, mobile power


Benefits

  • Reliable Off-Grid Power: High-capacity lithium storage with cutting-edge inverter technology for uninterrupted energy

  • All-Season Operation: Self-heating batteries ensure performance in cold climates

  • Advanced Monitoring: Real-time system status via CANBus, RS485, and inverter LCD display

  • Scalable and Flexible: Parallel inverter capabilities up to 72kW for expanding energy needs

  • Durable Design: IP65-rated, vibration-resistant components for rugged use

  • Space and Weight Efficient: Compact system ideal for mobile and residential applications

 

 Specifications

BigBattery 48V 4X Husky 2 Kit Product Specifications

Single Battery Tech Specs

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:
User Manual:
Safety Data Sheet:
CE Certificate:
UN38.3 Certificate:

Inverter Specs

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)


 Manual

Spec Sheet:
User Manual:
UL1741 Certificate:
WiFi Configuration Guide:

 Warranty

BigBattery Warranty

In the unlikely event you are having an issue with one of our batteries, we have developed a
straightforward Warranty & Return Policy servicing all customers in the USA:

  • Real (10) Year Warranty

    All our batteries come with a 10-Year Full Repair/Replacement Warranty. If our batteries malfunction
    due to component or manufacturing error, the product will be repaired or replaced free of charge.

  • Full Lifetime Tech Support & Customer Service

    All batteries include a Free Lifetime Technical Support & Troubleshooting Service. If you have any
    questions or need any help, simply call us at +1 (818) 280-3091 from 9am – 5pm, Monday – Friday, or
    send us an email anytime at Support@BigBattery.com.

  • Free Repair & Replacement

    All batteries are built to last a minimum of 10 years. We stand by the quality of our batteries. If any parts within our battery fail due to defects or manufacturing error within the next 10 years, we will fix or replace your battery free of charge. In addition, for the first year of the warranty we will even cover all shipping costs from/to your purchase address within the continental US.

  • Highest Quality Guarantee

    BigBattery utilizes Tier 1 cells to provide the highest quality lithium battery packs in the USA. Depending on the model, use case and environment, your battery is designed to last between 3,500 – 8,000 cycles when used as intended within our published battery specifications.

  • Covered Products

    This Warranty covers all battery packs from the “Date Of Purchase” from BigBattery for 10 years and
    all accessories included for 30 Days.

  • Automated Warranty Registration

    No warranty registration is needed. Warranties are automatically recorded via an internal customer
    database via serial number and QR code.

  • Product Manuals & Specification Sheets

    BigBattery provides a proprietary QR code on every battery. Scan this QR code with any phone to view
    the Product Manual and Product Spec Sheet for your specific battery model. Providing these documents
    to you in a digital format helps to protect our environment and provides you the most updated information
    on your product in real time.

  • Domestic Warranty Claim Support

    To start a warranty claim, please email us directly at Support@BigBattery.com to create a ticket. Include a written description of the problem and pictures if possible. Upon receipt, our Tech Support team will reach out to you within 24 – 48 hours to troubleshoot. If the battery has been purchased within a year if the issue being reported to BigBattery, you will be sent a Return Shipping Label at no cost. After the first year, you will have the option to pay for the shipping, or arrange your own shipping back to BigBattery. If the label is provided by BigBattery, please include a copy of this label in the return box or pallet when our 3rd party logistics provider arrives to pickup your return. All returns will be inspected prior to repair, replacement, or reimbursement, depending on the circumstances of return and availability of similar items. For detailed instructions, please review our Warranty Repair/Replacement Services section below.

  • Returning Accessories

    This Warranty includes a 30-Day replacement for all accessories (Anderson connectors, wiring, chargers, etc.)
    included with your battery. If product is not defective or damaged upon return, refunds will be offered based on
    the purchase price of the unit minus a 20% restocking fee.

  • Change Your Mind

    That’s OK! All our batteries come with a 30-Day money back guarantee. Returns will be subject to a 20% restocking
    fee
    . Call or email customer service for a free shipping return label.

  • Non-Transferable

    Our Warranty applies to the original owner. If you wish to transfer your Warranty to another party, you can do so
    within 30 days of your purchase by sending a Warranty Transfer Request to Support@BigBattery.com.

  • Return Hazmat Fee

    Due to the shipping regulations of lithium batteries, please note that some battery returns may require special
    documentation and packaging, and these instances could encounter extra fees if a customer is attempting to
    return a battery not covered by our Repair and Replacement Policy.

  • Battery Abuse Disclaimer

    This warranty does not cover damages resulting from misuse, abuse, accidents, alterations, or improper charging/
    installation of our product. Please scan the QR code on your battery and read the Manual prior to installation and
    charging. DIY modifications or damage due to gross negligence or abuse will void your Warranty.

  • Fraud Protection

    Repair, replacement, and refunds for your purchase will only be possible after your returned battery
    has been received and fully inspected at our facility.

  • Limitation of Damages

    In no event shall BigBattery, Inc. be liable for consequential damages due to breach of this Warranty.

  • Customer Satisfaction

    If buyers are not satisfied for any reason after speaking with Level 3 Tech Support and/or our Customer Service team,
    all original buyers may escalate dispute resolutions to our CTO for review. We aim to put our customers first, resolve
    any issues, and ensure that all customers are happy with their purchase from BigBattery.

Rev. March 2023

Warranty Details

10-Year Repair/Replacement Warranty Coverage Details: BigBattery, Inc. warrants the covered product to be free of all defects in material and workmanship for 10 years from the auto-registered date of purchase. This Warranty extends to the original buyer for the duration of 10 years.

All BigBattery batteries are designed to operate for a minimum of 10 years and require zero maintenance. Some BigBattery batteries can last up to 22 years depending on model, use case, and environmental variables.

BigBattery batteries are also guaranteed to hold a reasonable amount of capacity based on the time in service (see exclusion for details on limits). In the case of a diminished capacity claim, the customer has the option to return the battery to BigBattery for capacity testing. The battery will be fully bench tested to resolve the claim and a relevant full cycle test report will be provided to the customer. If the customer is deemed to be correct and the battery is diminished beyond the limits specified in the exclusion section, then the battery will be eligible for warranty resolution. The customer will not be responsible for the costs associated with testing regardless of the test results.

Within our 10-Year Warranty, BigBattery, Inc. will repair or replace, free of charge, any part proving defective in material or workmanship. All warranty repairs and service must be performed by an authorized BigBattery, Inc. technician, or at an authorized BigBattery, Inc. service facility (unless directed otherwise in writing by a BigBattery employee).

For the first year, the expenses related to returning and repairing a defective part assumed by BigBattery, Inc. within the Continental US include pickup, return shipping, repair, replacement and final shipping. This Warranty does not assume responsibility for disconnection, service interruption, or re-packing expenses per said return shipment. Customers with international warranty claims will need to cover the cost of shipping.

Warranty Exclusions

This warranty does not apply to any costs, repairs, or services for the following:

  1. On-site service calls from 3rd party.
  2. Damage resulting from misuse, abuse, accidents, alterations, use other than intended application, collision,
    dropping, or improper installation.
  3. Product was used out of specification, or undersized for the application.
  4. Environmental damage, including caustic substances, salty, or outdoor exposure unless the battery is specifically
    indicated to be for outdoor use on the Product Label or in the Specification Sheet or the Product Manual.
  5. Claims of diminished capacity of less than 12% in the first 5 years, or 25% from year 6 to the 10 year warranty period.
  6. Corrective work necessitated by repairs made by anyone other than a BigBattery, authorized service technician
     – if not previously advised by BigBattery Tech Support.
  7. Battery that has not been charged over a six month Batteries need to be charged regularly to maximize and
    maintain lifespan.
  8. Warranty will be void if battery is opened, disassembled, or improperly altered, unless explicitly directed by
    BigBattery for technical support.

Warranty Repair/Replacement Services

Contact BigBattery Tech Support, confirm the problem, and identify the solution with our team. If the battery needs to come back to BigBattery for repairs or parts replacement, Customer Service will offer to arrange to and from our repair facility. 

The buyer is required to pack the product according to the directions provided by Customer Service. The buyer should carefully cover and pack the battery needing repair, preferably in the original packing materials, in the same format as previously delivered (box/pallet) together with a copy of the original purchase receipt. Please write descriptions and updated notes on the receipt to better assist Tech Support in processing your repair or replacement.

All emails, notes, and calls are saved to assist our team in providing a speedy resolution. If the shipping is arranged by BigBattery, BigBattery assumes all liability with their scheduled carrier for the safe transportation of this battery to and from our repair facility listed below:

Return Address:
BigBattery, Inc.
21314 Lassen Street
Chatsworth, CA. 91311

 FAQs

BigBattery Frequently Ask Questions

Q1. Can your batteries be used in series?

A1. We no longer offer our batteries for use in series.

Q2. Do your batteries have a thermal management system?

A2. All of our batteries have a thermal management system that is controlled by the BMS (Battery Management System). This Thermal management system will not only prevent the battery from being used if the temperature is too high, but also if the temperature is also too low.

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