Batteries

BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty

$ 1,450USD · price may vary

Model: FHSKY-12051-G2
Specifications: 0

Overview

Power your off-grid system, RV, or backup setup with the BigBattery 12V Husky 2, a high-capacity, lithium iron phosphate battery designed for reliable, long-term energy storage. Delivering 5.12kWh of power and 400Ah of capacity, this 12V battery packs serious performance into a compact, plug-and-play solution.

With an integrated BMS, pre-installed 5/16" ring terminals, and ultra-safe LiFePO4 chemistry, the Husky 2 is engineered for effortless DIY installation and years of maintenance-free use.

Key Features:

Massive Capacity: 400Ah and 5.12kWh of 12V power in a single unit.

DIY Installation: Pre-installed ring terminals make setup quick and hassle-free.

Safe & Efficient: Built-in smart BMS protects against overcharging, short circuits, and more.

Long Lifespan: 3,000–5,000+ cycles with 10+ years of usable life.

Compact & Portable: Space-saving design fits easily into RVs, vans, or home systems.

Versatile Use: Perfect for off-grid living, van builds, backup power, or marine applications.

Legendary Support: Backed by a 10-year warranty and Shop Solar’s top-rated customer service.

Specifications:

Voltage: 12.8V

Capacity: 400Ah (5.12kWh)

Max Continuous Discharge: 150A

Dimensions: 20.6” x 10.2” x 9.8”

Weight: 103.6 lbs

Connector: 5/16" Ring Terminal

Operating Temp: -4°F to 140°F

Upgrade to a battery built for serious energy independence, without the complexity or contractor fees.

User Manual / Specifications:

12V Husky 2 User Manual

12V Husky 2 Product Specifications

Reading the specifications

Detailed specifications for BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty have not been published yet. BigBattery lists this battery in the Batteries, and we add fields as the manufacturer releases them — in the meantime, ask your distributor for the datasheet before ordering.

For a battery, the figures that matter most are continuous charge and discharge current, which limits how much power you can draw from the pack, cycle life at a stated depth of discharge, commonly 3,000–6,000 cycles for LiFePO4, round-trip efficiency, around 90–95% for lithium and 75–85% for lead-acid and communication protocol (CAN or RS485) for talking to the inverter. Storage is what turns a solar array from a daytime bill-reducer into a system that covers evening loads and rides through outages. It is normally the single most expensive component, so sizing it correctly matters more than with any other part.

Before you buy a battery

The checks below apply to any battery. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.

Match voltage to the inverter, and confirm the battery appears on the inverter maker's supported list. Closed-loop communication lets the inverter respect the battery's real charge limits instead of guessing.
Read the warranty in full: lithium warranties are stated as a term plus either a cycle count or a total energy throughput, and whichever limit arrives first ends the cover.
Leave room to expand. Packs that parallel cleanly let you add capacity later; ones that do not force a full replacement.
Compare usable kilowatt-hours, not nameplate capacity. A 100 Ah lead-acid battery at 12 V is nominally 1.2 kWh but only about 0.6 kWh is safely usable, while a 100 Ah LiFePO4 pack gives you roughly 1.0–1.2 kWh.

What people get wrong

Installing lithium packs in an unventilated, hot enclosure. Sustained high temperature is the fastest way to lose cycle life.
Ignoring the charge current limit and pairing a large array with a small bank, which trips protection and shortens life.
Mixing old and new batteries, or different chemistries, in one bank. The weakest unit drags the whole bank down and can be damaged by the others.

Price and availability in Canada

BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty is listed at $ 1,450 (USD) for Canada. Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.

SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in Canada: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports BigBattery locally before ordering.

BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty — frequently asked questions

How much does BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty cost?

BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty is listed at $ 1,450 (USD) for Canada. The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.

Who makes BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty?

BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty is a BigBattery product, listed under batteries with model reference FHSKY-12051-G2. The BigBattery brand page lists the rest of its range so you can compare across the catalogue.

Is BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty right for my system?

That depends on what it has to connect to. For a battery, check usable capacity after depth of discharge — LiFePO4 typically allows 80–100%, lead-acid closer to 50%, system voltage: 12 V, 24 V and 48 V for low-voltage packs, or a high-voltage stack and continuous charge and discharge current, which limits how much power you can draw from the pack against the rest of your equipment before price enters the decision. Compare usable kilowatt-hours, not nameplate capacity. A 100 Ah lead-acid battery at 12 V is nominally 1.2 kWh but only about 0.6 kWh is safely usable, while a 100 Ah LiFePO4 pack gives you roughly 1.0–1.2 kWh.

Where can I buy BigBattery 12V HUSKY 2 LiFePO4 Battery | 400Ah, 5.12kWh | Built-In BMS + Ring Terminal | 10-Year Warranty in Canada?

SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer in Canada — buying in-channel is what keeps the manufacturer's warranty valid.

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