3.5kW Home Solar Power System with 3.55kWh Lithium Battery & 2.64kW Solar Array

Complete Off-Grid Solar Power Solution for Homes, Cabins & Remote Properties

The ROCKSOLAR 3.5kW Home Solar Power System is a compact and reliable off-grid energy solution designed for cabins, cottages, tiny homes, workshops, farms, and remote properties. Combining a Growatt SPF3500TL inverter, a 48V 74Ah lithium battery, and a 2.64kW solar array, this system delivers dependable renewable energy for essential household appliances and everyday power needs.

Engineered for efficiency and simplicity, the system features an integrated MPPT solar charge controller, generator-ready input, and expandable battery capability, making it an ideal choice for users seeking affordable energy independence and backup power security.

Key Features

Reliable 3.5kW Inverter Output

• 3,500W continuous AC output

• Pure sine wave power for sensitive electronics

• Suitable for lighting, refrigeration, communication equipment, and household appliances

Lithium Battery Energy Storage

• Includes one 48V 74Ah lithium battery

• Approximate storage capacity: 3.55kWh

• Long cycle life and low maintenance operation

Efficient Solar Production

• Includes 6 × 440W monocrystalline solar panels

• Total solar array capacity: 2.64kW

• Designed for efficient daily energy generation and battery charging

Integrated MPPT Solar Charge Controller

• Built into the inverter

• Maximizes solar harvesting efficiency

• Simplifies installation and system configuration

Generator Backup Ready

• Supports generator charging input

• Provides reliable backup power during extended low-sunlight conditions

Expandable Design

• Supports future battery expansion

• Flexible platform for growing energy requirements

System Components

Inverter

• Growatt SPF3500TL Off-Grid Inverter

• 3.5kW continuous output

• Integrated MPPT solar charge controller

• Generator-ready input

Battery

• 1 × 48V 74Ah Lithium Battery

• 3,552Wh (3.55kWh) nominal energy storage

Solar Array

• 6 × 440W Monocrystalline Solar Panels

• Total solar capacity: 2,640W (2.64kW)

Installation Equipment

• Mounting hardware

• Solar cabling

• Fuses and breakers

• Required safety components

• Installation documentation

System Comparison Table

*Output configuration depends on inverter setup and installation requirements.

Performance Overview

*Estimated daily solar production varies based on location, weather conditions, season, shading, and installation angle.

Ideal Applications

• Off-grid cabins and cottages

• Tiny homes

• Rural properties

• Workshops and garages

• Farm buildings

• Remote offices

• Telecommunications equipment

• Emergency backup power systems

Benefits of This System

Affordable Energy Independence

Generate and store your own renewable energy while reducing dependence on utility power.

Reliable Backup Power

Integrated battery storage and generator compatibility provide dependable power during outages.

Easy Installation

Pre-matched components simplify system design and installation.

Expandable for Future Needs

Increase battery capacity as energy requirements grow.

Why Choose the ROCKSOLAR 3.5kW Home Solar Power System?

The ROCKSOLAR 3.5kW Home Solar Power System offers a practical balance of solar generation, lithium battery storage, and off-grid reliability. Whether powering a cabin, workshop, farm building, or backup power application, this system delivers dependable renewable energy in a compact, expandable package.

• Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
• Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
• If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.