Off-Grid Solar Kit 8kW 48V 120V/240V 20.48kWh LiFePO4 12×415W Solar Panels (SGM-8K20)

Home Solar Installation Kit — 8kW 415W 20.48kWh Off-Grid System

The home solar installation kit that serious DIY builders and professional installers both reach for — the SGM-8K20 delivers 8kW of split-phase 120V/240V off-grid power with 12 × 415W monocrystalline panels, 20.48kWh of LiFePO4 battery storage, an 8kW 48V inverter supporting up to 6-unit parallel expansion and all mounting hardware. Available in two battery configurations, this pv panel kits system is widely deployed in off-grid homes, emergency backup installations and DIY solar projects where the combination of large battery storage, proven 415W monocrystalline panel specification and flexible battery arrangement choices delivers the most versatile 8kW residential solar kit available.

Table of Contents

1. Kit Contents by Configuration
2. System Specifications
3. Two Battery Configuration Options
4. 12×415W Solar Array
5. 20.48kWh Storage Advantage
6. 8kW Split-Phase Inverter
7. Solar Power System Kit for Home Applications
8. FAQ

Kit Contents by Configuration

SGM-8K20 (4 × 100AH):

• 1 × 8,000W 48V DC 120V/240V AC Inverter (Up to 6 units parallel)
• 12 × 415W Monocrystalline Solar Panels
• 4 × 100AH 51.2V LiFePO4 Battery SG48100P (20.48kWh)
• 2 Sets × 50ft Solar Extension Cables (Inverter PV Input)
• 12 × Sets Mounting Z-Brackets
• 1 × 200A DC Breaker
• 2 × 25A PV Breaker

SGM-8K20T (2 × 200AH):

• 1 × 8,000W 48V DC 120V/240V AC Inverter (Up to 6 units parallel)
• 12 × 415W Monocrystalline Solar Panels
• 2 × 200AH 51.2V LiFePO4 Battery SG48200T (20.48kWh)
• 2 Sets × 50ft Solar Extension Cables (Inverter PV Input)
• 12 × Sets Mounting Z-Brackets
• 1 × 200A DC Breaker
• 2 × 25A PV Breaker

System Specifications

Two Battery Configuration Options

The SGM-8K20’s two battery configurations offer identical 20.48kWh total storage with different physical battery arrangements — providing installation flexibility across different enclosure constraints.

4 × 100AH (SGM-8K20): Four compact batteries offering individual replaceability and installation flexibility for constrained spaces. Ideal for mechanical rooms or battery enclosures where smaller individual units are easier to position and manage.

2 × 200AH (SGM-8K20T): Two larger batteries providing the same 20.48kWh in a simpler installation with fewer connections. Preferred for clean-installation approaches where minimising battery wiring complexity is a priority.

Both configurations deliver identical system performance — the home solar installation kit choice between them is purely a physical installation preference.

12×415W Solar Array

Twelve 415W monocrystalline panels deliver 4,980W of generation — producing approximately 20kWh per day under four hours of peak sun. The home solar array of 12 panels provides the generation volume required to consistently recharge the 20.48kWh battery bank daily and power concurrent daytime loads from direct solar generation.

The twelve 415W panels occupy a similar physical footprint to a 10-panel 550W array — but the 415W panel’s compact individual dimensions (67–70 inches per panel) offer better rooftop geometry flexibility for homes with dormer windows, skylights or complex roof configurations that limit the positioning of larger-format panels.

20.48kWh Storage Advantage

The solar power system kit for home SGM-8K20’s 20.48kWh battery bank is significantly larger than the 10.24kWh found in many competing 8kW configurations — nearly double the storage at equivalent system output. This storage advantage provides:

• Extended overnight operation supporting higher consumption households
• Multi-day cloudy-weather resilience before backup generation intervention
• Reduced depth-of-discharge per cycle — extending LiFePO4 battery service life
• Capacity to absorb full daily solar generation and retain surplus for evening peak demand

For residential solar kit buyers whose primary concern is overnight energy availability and cloudy-day resilience, the 20.48kWh specification in the SGM-8K20 is the distinguishing advantage over comparable 8kW systems with smaller battery banks.

8kW Split-Phase Inverter

The 8kW split-phase 120V/240V inverter enables the full residential electrical profile — 240V loads (air conditioner, well pump, water heater) and 120V standard circuits operating simultaneously. At 8,000W continuous output with up to 6-unit parallel expansion capability, this home solar installation kit inverter provides both immediate residential coverage and a scalable platform for future output growth toward 48kW.

Solar Power System Kit for Home Applications

The SGM-8K20 is appropriate as a solar power system kit for home in:

• Medium-to-large residences consuming 15–20kWh daily
• Properties with well pumps and central air conditioning requiring 240V
• Emergency backup systems requiring extended runtime without grid power
• Agricultural properties needing whole-facility power independence
• Rural homes where grid extension cost exceeds solar system investment

Explore the full residential solar installation kit range in our Solar Kits, Off-Grid Solar Systems and Solar Panels categories.

FAQ

What is a home solar installation kit? A home solar installation kit is a complete package containing all components required to install a residential solar power system — panels, inverter, batteries, charge management, mounting hardware and circuit protection — in a single purchase. The SGM-8K20 is an 8kW home solar installation kit providing everything needed for a complete DIY or professionally installed residential off-grid solar system.

What are the two battery options in this home solar installation kit? The SGM-8K20 uses 4 × 100AH LiFePO4 batteries (more flexibility, individual replaceability). The SGM-8K20T uses 2 × 200AH LiFePO4 batteries (simpler installation, fewer connections). Both deliver identical 20.48kWh total storage — the choice is a physical installation preference based on available space and wiring preference.

Why does this pv panel kits configuration use 20.48kWh storage? The pv panel kits SGM-8K20 uses 20.48kWh of storage rather than the 10.24kWh common in competing 8kW configurations because larger storage provides extended overnight operation, better cloudy-day resilience and reduced depth-of-discharge — extending battery service life. For residential solar systems where overnight storage availability is the primary operational concern, the larger battery bank is the more appropriate specification.

What is the home solar array generation from this kit? The home solar array of 12 × 415W panels generates approximately 20kWh per day under four hours of peak sun — sufficient to fully recharge the 20.48kWh battery daily with power available for concurrent daytime loads from direct solar generation.

Is this solar power system kit for home DIY-installable? Yes — the SGM-8K20 is designed for DIY installation. All essential components are included: panels, inverter, batteries, extension cables, mounting hardware and circuit protection breakers. The system architecture follows a straightforward linear design. Local electrical codes vary — verify your jurisdiction’s requirements for self-installed solar systems before proceeding.