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3.5 kW Off-Grid Solar Panel Kit with 2600W solar Panels

3.5 kW Off-Grid Solar Panel Kit with 2600W solar Panels

Get extra 10% discount. Use code OFFGRID10 at checkout.
$2,599.99 CAD
$4,999.99 CAD $2,599.99 CAD
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  • Comprehensive Solution: Complete setup including inverter, battery, solar panels, and installation gear.
  • High-Performance Panels: 2640W total from ROCKSOLAR 440W Monocrystalline panels.
  • Efficient Inverter: Growatt SPF 3500TL LVM-US for reliable power conversion.
  • Durable Construction: Weather-resistant panels with rigid frames and anti-reflective glass.
  • Safe and Reliable: Advanced BMS and protective inverter features ensure safety.
  • Flexible Installation: Easy setup with pre-drilled holes and stackable battery design.
  • Remote Management: WIFI/GPRS monitoring; WIFI Module included.
  • Long Lifespan: Panels last over 25 years; 5-year warranty for battery and inverter.
  • Environmental Benefit: Reduces carbon footprint with sustainable energy.
  • Scalable System: Expandable with additional batteries or panels as needed.
  • All-Weather Performance: Operates effectively under diverse conditions.
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  • Description
  • Includes
  • Specifications
  • Datasheet
  • Downloads
  • Reviews

A comprehensive and powerful solution for residential solar energy needs. This robust system combines the efficiency of the Growatt Off-Grid Storage Inverter SPF 3500TL LVM-US, and the high-performance 2640W Rigid Bifacial Solar Panels to provide an unrivaled off-grid experience. 

Engineered for seamless integration, the system ensures that your home can run independently of the grid, whether as a primary power source or as a backup during outages. It's an ideal setup for environmentally conscious homeowners looking to reduce their carbon footprint and harness the power of the sun.

Product Features

Growatt Off-Grid Storage Inverter SPF 3500TL LVM-US:

  • Highly versatile with 3500W rated power
  • Integrated MPPT charge controller for maximum solar efficiency
  • Supports parallel operation up to 20kW and Split phase 120/240Vac output with two in parrallel.
  • Flexible scheduling for inverter charging and discharging
  • Configurable grid or solar input priority and Generator Connection ready
  • WIFI/GPRS remote monitoring (WiFi Module included)

ROCKSOLAR 440W Monocrystalline Bifacial Solar Panel (x6):

  • High-efficiency monocrystalline cells for superior performance
  • 440W power output per panel with a total array power of 2640W
  • Durable aluminum frame and anti-reflective glass for weather resistance
  • Easy installation with pre-drilled mounting holes
  • Bypass diodes to minimize shading impact on performance
  • Over 30 years of service life with a 12-year manufacturer warranty
  • Eco-friendly power generation to reduce carbon footprint
  • 1 x Growatt Off-Grid Storage Inverter SPF 3500TL LVM-US
  • 6 x 440W Bifacial Solar Panel
  • 1 x Set of Cables for Solar Panel to Inverter Connection
  • 1 x User Manual for the Inverter
  • 1 x User Manual for the Solar Panels
  • 1 x Warranty Card for the Complete System
  • 1 x Wifi Module Included

Technical Specifications


Growatt Off-Grid Storage Inverter SPF 3500TL LVM-US 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

 440W Solar Panel Specification Details
Panel Type Monocrystalline Bifacial
Power Output 440W
Maximum Power Voltage 32.98V
Cell Efficiency 22.57%
Frame Material Aluminum
Dimensions  1722mm x 1134mmX30mm
Weight approx. 25-30 lbs
Operating Temperature -40°C to +85°C
Waterproof Rating IP65 
Front Glass High light transmittance, low-iron tempered glass
Bypass Diodes Integrated
Connectors MC4
Cable Length Varies depending on the brand (approx. 3-6 ft)
Mounting Hole Locations Pre-drilled
Service Life 30 years or more
Warranty 12 years


Download Off-Grid Solar Inverter Datasheet (PDF)
Download 440W Rigid Panel Datasheet (PDF)
Download Off-Grid Solar Inverter Manual (PDF)
Download 440W Rigid Panel Manual (PDF)

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