• 3500w off grid solar kit
  • Philadelphia 600W rigid solar panels
  • solar inverter
  • 48v lifepo4 lithium battery
  • connection setup of 3500w off grid power system
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ROCKSOLAR 3500W 48V Off-Grid Solar System

ROCKSOLAR 3500W 48V Off-Grid Solar System

Get extra 10% discount. Use code OFFGRID10 at checkout.
$5,999.99 CAD
$7,999.99 CAD $5,999.99 CAD
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  • Complete System: Includes batteries, panels, inverter, and controller.
  • High-Capacity Battery: Two 48V 50Ah LiFePO4 batteries with BMS.
  • Efficient Solar Panels: Four 400W Monocrystalline, 22% efficiency.
  • Powerful Inverter: 3.5KW off-grid solar inverter for sensitive devices.
  • Durable & Safe: Waterproof panels, BMS-protected battery.
  • Versatile: Powers multiple devices, constant supply.
  • Extended Warranty: 10 years for batteries and panels.
  • Easy Installation: Pre-drilled holes, lightweight design.
  • Future-Proof: Upgradeable for increased power needs.
  • Wide Temperature Range: Battery -20°C to 60°C; inverter/controller also tolerant.
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  • Description
  • Includes
  • Specifications
  • FAQ
  • User Manual
  • Reviews

The ROCKSOLAR 3500W 48V Off-Grid Solar System offers the most comprehensive power solution yet for Canadian cottage/rv owners. It boasts reliability and high efficiency, providing off-grid power at your convenience. The system consists of 2x 48V 50AH LiFePO4 Batteries, 4x 400W Rigid Solar Panels, and a potent 6KW Off-Grid Solar Inverter. It is designed to power a wide array of appliances including a mini fridge, freezer, LCD TV, wifi router, coffee machine, microwave, lighting, stereo, laptop, and phone chargers, ensuring a 24/7 off-grid power supply for all your cottage needs. The ROCKSOLAR Cottage Life Series V comes with a future-focused design that allows easy upgrades for increased power needs, providing free upgrade services and exchangeable key components. ROCKSOLAR guarantees the value retention of all components, making sure your investment is worthwhile. The batteries and solar panels come with a reassuring 10-year warranty, while the other components carry a 2-years warranty. Embrace a worry-free cottage life with the ROCKSOLAR Cottage Life Series V Off-Grid Solar System.

Product Features

ROCKSOLAR 48V 50Ah Deep Cycle LiFePO4 Battery with BMS System (2 pcs):

  • 48V 50AH capacity
  • 3500+ cycle life with 100% discharge rate for ultra-long service life
  • Steady power: Flat voltage curve for consistent power output, no significant drop like traditional SLA batteries
  • Utilizes advanced LiFePO4 Battery Technology for dependable deep cycling
  • Smart Battery Management System for safety and longevity
  • Lightweight: Only 53 lbs. for easy portability and installation
  • Suitable for harsh environments: Built-in BMS provides protection against temperature fluctuations, short circuits, over-discharge, over-current, and overcharge, and ensures battery cell balancing.
  • Operating temperature range for charging: 0C∽45C, discharging: -20~-60.
  • BMS auto-shuts off the battery outside the working temperature.
  • Warranty: 10-year warranty and 10+ year service life

ROCKSOLAR 400W 12V Rigid Monocrystalline Solar Panel (4 Pcs):

  • 400W output (each)
  • Rigid Monocrystalline Solar Panel
  • Waterproof and Corrosion-Resistant Aluminum Alloy Frame
  • High-Efficiency Solar Cell with 22% Conversion Efficiency
  • Pre-drilled holes for easy mounting and securing to any surface

Growatt 3.5KW Off-Grid Solar Inverter:

  • Integrated MPPT: Features an advanced MPPT charge controller for maximum solar energy efficiency.
  • Battery Versatility: Operates with or without a battery, providing flexible energy solutions.
  • High PV Input: Accepts up to 280VDC of PV input, allowing for a wide range of solar panel options.
  • Generator Ready: Equipped with a generator connection for additional power options.
  • Expandable Power: Supports parallel operation for capacity expansion up to 21kW.
  • Smart Monitoring: Optional WIFI/GPRS remote monitoring for convenient system management.
  • Priority Configuration: Configurable grid or solar input priority to optimize energy use.
  • Quick Transfer: Transfer time is 10ms typical, ensuring minimal interruption during power source changeover.
  • Durable Construction: Designed to operate within a wide temperature range for various environments.
  • Comprehensive Warranty: Comes with a 2-year warranty for peace of mind and reliability.

    • 2 x 48V 50Ah Deep Cycle LiFePO4 Batteries
    • 4 x 400W 12V Rigid Monocrystalline Solar Panel
    • 1 x 3.5KW Off-Grid Solar Inverter
    • 1 x 10 Ft 10AWG Extension Cables With MC4 Connectors One Pair Red+Black
    • 8 x Z-Bracket Mount System (Set of 4)
    • 1 x User Manual

    Technical Specifications


    48V 50Ah Deep Cycle Lithium Battery (LIFEPO4) Details
    Nominal capacity 50Ah
    Mix. capacity 49Ah
    Nominal energy 2560Wh
    Combination structure of battery 16S
    Nominal voltage 51.2V
    End of discharge voltage 43.2V
    Standard charge voltage 58.4±0.2V
    Float charge voltage 55.2V
    Standard charge current 10A
    Recommended charge current ≤25A
    Allowed Max. charge current 50A
    Standard discharge current 10A
    Recommended discharge current ≤50A
    Allowed Max. discharge current 50A
    Peak discharge current 100A,10Sec
    Internal Resistance ≤80mΩ
    Weight Approx. 24kg
    Ex-factory capacity Approx.50% SOC
    Operation temperature Discharge: -20°C~60°C; Charge: 0°C~45°C
    Storage environment ≤1Month:-20~+60°C、5~75%RH; ≤6Month: -10~+45°C、5~75%RH; Recommend environment: 15~+35°C、5~75%RH

    400W Solar Panel Specification Details
    Panel Type Monocrystalline
    Power Output 400W-420W
    System Voltage 1000V
    Cell Efficiency 20.7%
    Frame Material Anodized Aluminum
    Dimensions 1722mm x 1134mm x 30mm
    Weight 22 kg
    Operating Temperature -40°C to +85°C
    Waterproof Rating IP68
    Front Glass Anti-reflective tempered glass
    Bypass Diodes Integrated
    Connectors MC4
    Service Life 25 years
    Warranty 10 years

    Growatt 3.5KW Off-Grid Solar Inverter Details
    Battery Voltage 48VDC
    Battery Type Lithium/Lead-acid
    Inverter Output Rated Power: 3500VA 3500W
    Parallel Capability: Yes, 6 units maximum
    AC Voltage Regulation (Battery Mode): 100Vac/110Vac/120Vac @ 50/60Hz
    Surge Power: 6000VA
    Efficiency (Peak): 90%
    Waveform: Pure Sine Wave
    Transfer Time: 10ms typical, 20ms max
    Solar Charger Maximum PV Array Power: 4000W
    MPPT Range @ Operating Voltage: 120VDC – 225VDC
    Maximum PV Array Open Circuit Voltage: 280VDC
    Maximum Solar Charge Current: 80A
    AC Charger Charge Current: 40A
    AC Input Voltage: 120VAC
    Selectable Voltage Range: 95-140VAC (For Personal Computers); 65-140VAC (For Home Appliances)
    Frequency Range: 50Hz/60Hz (Auto sensing)
    Physical Protection Degree: IP20/NEMA Type1
    Dimension (W/H/D): 330/485/135mm
    Net Weight: 12kg
    Operating Environment Humidity: 5% to 95% Relative Humidity (Non-condensing)
    Operating Temperature: 0°C - 50°C (32°F - 122°F)
    Storage Temperature: -15°C - 60°C (-5°F - 140°F)
    Warranty 2 Years


    The Cottage Life Series V kit includes 2x 48V 50AH LiFePO4 Batteries, 4x 400W Rigid Solar Panels, and a 3.5KW Off-Grid Solar Inverter.

    The system is capable of powering a wide range of appliances including a mini fridge, freezer, LCD TV, wifi router, coffee machine, microwave, lighting, stereo, laptop, and phone chargers.

    Yes, the system is designed to be easily upgraded for increased power needs in the future. With free upgrade services and exchangeable key components, you can expand your energy independence with confidence.

    The system comes with a 10-year warranty on the batteries and solar panels and a 2-years warranty on other components.

    The power generation of the system largely depends on sunlight availability and other environmental factors. However, with its 4x 400W Rigid Solar Panels, it's designed to offer a significant amount of power for your off-grid needs.


    Download LiFePO4 Battery Manual (PDF)
    Download Rigid Solar Panel Manual (PDF)
    Download Off-Grid Solar Inverter Manual (PDF)

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