Product Description

The BigBattery 48V HUSKY 2 INV provides 5.12 kWh of LiFePO4 storage — 100Ah at 48V — in a single portable-format battery for 48V off-grid inverter systems, RVs, and marine installations. The INV designation is BigBattery's inverter-communications version: CANBus/RS485 ports let the battery share data with compatible inverters for closed-loop charging and monitoring. OffGrid Horizon is a family-owned authorized BigBattery partner serving customers across the US.

Who This Is For

Builders starting a 48V system who want to grow storage in 5.12 kWh steps: off-grid cabins, backup-power setups, and RV or marine builds designed around a 48V inverter. Per BigBattery, the INV communications support EG4 6000XP/12000XP and Victron MultiPlus-II 3000/5000 inverters, and BigBattery's APEX inverter pages list the HUSKY 2 INV among their closed-loop compatible batteries.

Key Features

  • 5.12 kWh / 100Ah at 48V — the voltage most modern all-in-one off-grid inverters are built around
  • Inverter communications (INV) — CANBus/RS485 ports; per BigBattery, compatible with EG4 6000XP/12000XP and Victron MultiPlus-II 3000/5000
  • 100A max continuous discharge with a recommended continuous power of 4,000W and 150A peak (3 seconds max), per BigBattery's published ratings
  • Self-heating function for cold-climate use, with a published charge temperature range of -4°F to 113°F
  • IP65 / NEMA 4X protection rating per BigBattery
  • Parallel expansion — up to 16 batteries, per BigBattery
  • CE and UN38.3 certificates published by BigBattery

Why BigBattery

BigBattery is a US-based company building LiFePO4 battery systems for RV, off-grid, and marine applications, and it backs the HUSKY 2 line with a 12-Year Warranty and Lifetime USA-Based Tech Support, as published on bigbattery.com. Buying through OffGrid Horizon, an authorized partner, keeps that factory warranty intact.

Specifications

Nominal voltage 51.2V (48V system)
Capacity 100Ah / 5.12 kWh
Chemistry LiFePO4 (lithium iron phosphate), 16S configuration
Max continuous discharge 100A
Recommended continuous power 4,000W
Peak discharge 150A (3 seconds max)
Max charge current 100A
Charge temperature -4°F to 113°F
Discharge temperature -4°F to 122°F
Storage temperature -4°F to 122°F (max 6 months)
Self-heating Yes
Communication CANBus / RS485
Compatible inverters (comms) EG4 6000XP/12000XP, Victron MultiPlus-II 3000/5000, per BigBattery
Parallel capability Up to 16 units
Dimensions 18.1 in W x 12.6 in D x 9.8 in H
Weight 100 lb
Protection rating IP65 / NEMA 4X
Certifications CE, UN38.3 (certificates published by BigBattery)
Warranty 12-Year Warranty, as published by BigBattery
SKU FHSKY-48051-G2-INV

All specifications per BigBattery's published product page and spec sheet.

12V vs 24V vs 48V — Picking the Right HUSKY

All three HUSKY 2 INV models store the same 5.12 kWh; the difference is system voltage. Choose this 48V model when you are building around a 48V off-grid inverter — higher voltage keeps current low and cabling manageable. If your rig runs 12V appliances and chargers, the 12V HUSKY 2 INV (400Ah) is the drop-in choice, and the 24V HUSKY 2 INV (200Ah) covers 24V systems.

Installation

Mount the battery in a dry, ventilated location, with cabling and fusing rated for up to 100A of continuous draw. Set chargers to a LiFePO4 profile within the published temperature limits, and follow BigBattery's manual for communication wiring to a compatible 48V inverter. For fixed off-grid installations tied to a distribution panel, have the AC side handled by a licensed electrician.

Warranty & Support

Per BigBattery, the HUSKY 2 INV carries a 12-Year Warranty with Lifetime USA-Based Tech Support. As a family-owned authorized BigBattery partner, OffGrid Horizon can help with registration, troubleshooting, and claims. Returns require a Return Merchandise Authorization (RMA) — contact us before shipping anything back. Call (302) 496-3554.

Shipping

Ships within the United States. At 100 lb, this battery travels in protective packaging; please inspect the carton on delivery, note any damage with the carrier, and contact us right away so we can make it right.

Frequently Asked Questions

What does INV mean?

It is BigBattery's inverter-communications version of the HUSKY 2. CANBus/RS485 ports let the battery report data to compatible inverters for closed-loop charging and monitoring.

Which inverters does it communicate with?

BigBattery's product page lists EG4 6000XP/12000XP and Victron MultiPlus-II 3000/5000, and BigBattery's APEX 6.5K and 10K inverter pages list the HUSKY 2 INV among closed-loop compatible batteries. With other 48V equipment it works as a standard LiFePO4 battery, without communications.

Will one battery run an APEX 6.5K?

One HUSKY 2 INV is limited to 100A continuous discharge, with a BigBattery-recommended continuous power of 4,000W — below the inverter's 6,500W rating. Plan on paralleling batteries (up to 16, per BigBattery) if you want to draw more sustained power.

Can it charge below freezing?

Per BigBattery, the battery includes a self-heating function and publishes a charge range of -4°F to 113°F. Follow the manual's cold-weather guidance.

Can I add more batteries later?

Yes — per BigBattery, up to 16 HUSKY 2 units can be connected in parallel, growing the bank in 5.12 kWh steps.

Is it suitable for RVs and boats?

BigBattery positions the HUSKY 2 for RV, marine, and off-grid applications and rates the enclosure IP65 / NEMA 4X. It is not intended for submersion; have chassis and marine wiring performed by a qualified installer.

Planning a 48V system? Call OffGrid Horizon at (302) 496-3554 — we are a family-owned shop and glad to help you match batteries to an inverter.

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