Batteries

BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty

$ 2,980USD · price may vary

Model: F-NXUS-48150-G1
Specifications: 0

Overview

Unlock reliable, high-capacity off-grid power with the BigBattery 48V 15kWh NEXUS—one of the most affordable, scalable LiFePO₄ battery systems on the market. Designed for seamless integration, rugged performance, and long-term reliability, NEXUS is the ideal choice for residential, commercial, and off-grid solar setups.

Whether you're building a backup energy system or powering a remote cabin, the NEXUS delivers peace of mind with smart features like a built-in heater, fire suppression system, and advanced BMS for real-time protection and monitoring.

Key Features & Benefits:

15kWh Capacity – Delivers uninterrupted, high-demand power for off-grid and hybrid solar systems.

Expandable to 225kWh – Connect up to 15 units in parallel for massive energy storage.

Advanced LiFePO₄ Chemistry – Safe, long-lasting cells rated for 4,000+ cycles at 80% DoD.

DIY-Friendly Setup – Floor-standing design with plug-and-play terminals and harnesses.

All-Climate Operation – Integrated heater and thermal management system support -4°F to 113°F.

Quadruple BMS Protection – Built-in smart Battery Management System with real-time alerts.

Emergency-Ready – Fire suppression system ensures added safety in any application.

Inverter-Compatible – Works with EG4, Sol-Ark, Victron, Solis, LUX, and more.

Indoor/Outdoor Ready – Rugged, compact design for homes, garages, sheds, or cabins.

Perfect For:

Residential solar energy storage

Off-grid cabins and homesteads

Emergency backup power (EPS)

Commercial and industrial energy systems

Take control of your power with scalable, maintenance-free lithium storage you can trust—backed by Shop Solar’s legendary support.

User Manual / Documents:

BigBattery 48V 15kWh NEXUS LiFePO4 Battery User Manual

BigBattery 48V 15kWh NEXUS LiFePO4 Battery Specifications

What these specifications mean

Detailed specifications for BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited 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.

Choosing a battery: the checks that matter

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.

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.
Size from your evening consumption. Add up what actually runs after sunset for the hours you want covered, then divide by the usable capacity per unit — that number, not the array size, sets how many batteries you need.
Check the continuous discharge rating against your inverter. A battery that stores plenty of energy but can only deliver 50 A cannot support a large inverter at full output.

Common mistakes

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.
Sizing the bank for total daily consumption rather than after-dark consumption, which typically doubles the cost for no benefit.
Installing lithium packs in an unventilated, hot enclosure. Sustained high temperature is the fastest way to lose cycle life.

Price and availability in Canada

BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty is listed at $ 2,980 (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 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty — frequently asked questions

How much does BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty cost?

BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty is listed at $ 2,980 (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 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty?

BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty is a BigBattery product, listed under batteries with model reference F-NXUS-48150-G1. The BigBattery brand page lists the rest of its range so you can compare across the catalogue.

Is BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited Warranty right for my system?

That depends on what it has to connect to. For a battery, check nominal capacity in ampere-hours (Ah) or kilowatt-hours (kWh), usable capacity after depth of discharge — LiFePO4 typically allows 80–100%, lead-acid closer to 50% and system voltage: 12 V, 24 V and 48 V for low-voltage packs, or a high-voltage stack against the rest of your equipment before price enters the decision. Check the continuous discharge rating against your inverter. A battery that stores plenty of energy but can only deliver 50 A cannot support a large inverter at full output.

Where can I buy BigBattery 48V 15kWh NEXUS LiFePO4 Battery | Expandable to 225kWh | Built-In BMS, Heater & Fire Suppression | Indoor/Outdoor | 12-Year Limited 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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