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BigBattery

BigBattery 48V HUSKY 2 INV Lithium Battery | 5.12 kWh | 100Ah LiFePO4 | RV, Off-Grid & Marine

SKU FHSKY-48051-G2-INV

Regular price: $1,870.00

Regular price: $1,870.00

✅ Order by 12:00 PM EST and processing starts the same day (ships within 1–2 business days). Free, insured US shipping — delivery in 4–7 business days. Oversized items ship via LTL freight and we coordinate delivery with you by phone.

Quantity

OffGrid Horizon Family Owned and Operated

🏔️ OffGrid Horizon is family-owned & off-grid obsessed. Read our story →

Shipping: how fast & how it works

Free standard shipping on every US order — no shipping charges at checkout, no hidden fees, and every shipment is insured against loss or damage.

Processing: 1–2 business days. Order before 12:00 PM EST and processing begins the same day.
Delivery: 4–7 business days via USPS, UPS or FedEx. Tracking is emailed the moment your order ships.
Large items (solar kits, batteries, shelters): delivered by LTL freight carriers such as FedEx Freight, Old Dominion or XPO. The carrier calls ahead to schedule a delivery window — please inspect the pallet and note any damage on the delivery receipt before signing, and we’ll take care of the rest.

Questions about delivery to your location? Call (302) 496-3554 (Mon–Fri, 9am–4pm EST) — we’re happy to check before you order.

What is your Return Policy?

At OffGrid Horizon, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:

1. Return Window

You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.

2. Who Pays for Return Shipping?

If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost — and you’ll receive a full 100% refund or replacement, including any original shipping costs.
If you’re returning an item because you changed your mind, you’ll be responsible for return shipping, and a 25% restocking fee applies.

3. Damaged or Defective Items

Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement.

4. Changed Your Mind?

If you no longer want the item, you can return it within 30 days — as long as it’s unused, unopened, in its original packaging, and in resellable condition.

5. Refund Processing

Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.

How to start a return: email sales@offgridhorizon.com or call (302) 496-3554 (Mon–Fri, 9am–4pm EST) with your order number — we’ll send return instructions and your RMA right away.

Product Description

The BigBattery 48V HUSKY 2 INV provides 5.12 kWh of LiFePO4 storage at 48V (100Ah), making it a natural fit for 48V off-grid inverter systems as well as RV and marine installations. The INV model adds inverter communications, letting the battery talk directly to compatible inverters — including the EG4 6000XP and APEX series — for closed-loop charging and monitoring.

Why the 48V HUSKY 2 INV

5.12 kWh from a single battery — 100Ah at 48V, the efficient voltage for modern off-grid inverters
Inverter communications (INV): closed-loop integration with compatible 48V inverters such as the EG4 6000XP and APEX 6.5K/10K
LiFePO4 chemistry — stable lithium iron phosphate cells with a built-in battery management system (BMS) that protects against over-charge, over-discharge, and shorts
48V architecture means low current, thin cabling, and minimal resistive loss — the same reason whole-home systems run at 48V

Who it's for

Builders starting a 48V off-grid system who want to grow in 5.12 kWh steps, and RV or marine installs running 48V inverters. If you want more capacity per unit, compare the NEXUS (15 kWh per cabinet) or stackable ETHOS platform. The HUSKY 2 line also comes in 12V (400Ah) and 24V (200Ah) versions.

Specifications

Nominal voltage	48V
Capacity	100Ah — 5.12 kWh
Chemistry	LiFePO4 (lithium iron phosphate)
Communication	Inverter comms for closed-loop integration (INV model)
Compatible inverters	48V units including EG4 6000XP and APEX series
Protection	Built-in BMS
Applications	48V off-grid systems, RV, marine
SKU	FHSKY-48051-G2-INV

Warranty & support

Covered by BigBattery's 12-year manufacturer warranty, backed by lifetime USA-based technical support.

Common questions

Why choose 48V?

Modern all-in-one off-grid inverters are built around 48V banks — the higher voltage keeps current low, cabling manageable, and efficiency high. If your appliances and system are 12V or 24V, choose the matching HUSKY 2 version instead.

Can I add more batteries later?

Yes — additional 48V HUSKY 2 units can be paralleled to grow the bank in 5.12 kWh increments.

How does LiFePO4 handle cold weather?

It discharges reliably in freezing temperatures, but the BMS restricts charging below freezing to protect the cells — mount the battery in an insulated compartment or heated space for year-round charging.