Introduction
Residential High Voltage PV Energy Storage Inverter
Product Category: Hybrid Solar Inverter | Residential Energy Storage Inverter
Power Range: 3kW–8kW
Battery Type: High Voltage Lithium Battery
Phase: Single Phase
Protection Grade: IP65
Warranty: 10 Years
1. Product Overview
The STH Series Single Phase High Voltage Hybrid Inverter is designed for advanced residential photovoltaic energy storage systems, providing an efficient solution for homeowners, installers, and energy storage distributors worldwide.
Compatible with high voltage LiFePO4 battery systems, this single phase high voltage hybrid inverter integrates solar generation, battery storage, grid interaction and emergency backup power functions into one intelligent energy management system.
With a power range of 3kW to 8kW, IP65 outdoor protection, up to 97.6% conversion efficiency, and a standard 10-year factory warranty, the STH high voltage inverter is ideal for overseas residential PV storage applications including villas, private houses and small commercial buildings.
The inverter supports:
- PV self-consumption
- Battery charging and discharging
- Grid-connected operation
- Off-grid backup power
- Intelligent energy management
Equipped with 10ms ultra-fast backup switching, OLED local display and mobile App monitoring, the system provides reliable UPS-level backup power for critical household loads.
The STH Series works perfectly with our HPIXP High Voltage Stackable All-in-One Energy Storage System, creating a complete high voltage residential solar storage solution.
2. Core Advantages
High Voltage Battery Compatibility
The STH high voltage hybrid inverter supports advanced high voltage lithium battery systems, allowing flexible battery module configuration.
Compared with traditional low voltage storage systems, high voltage battery architecture improves:
- System efficiency
- Energy transmission capability
- Installation flexibility
- Overall energy utilization rate
Recommended matching product:
→ HPIXP High Voltage Stackable All-in-One Energy Storage System
Single Independent MPPT Solar Tracker
The inverter features one independent MPPT channel, optimized for residential rooftops with single-direction solar panel installation.
Advantages:
- Stable PV tracking performance
- Simplified system design
- Lower installation complexity
- Improved project cost efficiency
30A High Current Battery Charging & Discharging
Supporting up to 30A battery charge and discharge current, the STH high voltage solar inverter delivers strong energy throughput capability.
Suitable for:
- High self-consumption households
- Peak electricity tariff optimization
- Battery energy arbitrage applications
15A Maximum PV Input Current
The PV input supports up to 15A, compatible with modern high-current solar modules.
Benefits:
- Supports latest PV panel technologies
- Reduces system LCOE
- Improves solar generation utilization
IP65 Outdoor Protection Design
The IP65 enclosure enables direct outdoor wall-mounted installation without additional protective cabinets.
Suitable for:
- Residential outdoor installation
- Villa energy storage systems
- Remote solar applications
10ms UPS-Level Backup Switching
During grid failure, the inverter switches to backup mode within 10 milliseconds.
This helps protect:
- Home appliances
- Communication equipment
- Security systems
- Essential electrical loads
OLED Display & Mobile App Monitoring
The STH inverter supports dual monitoring methods:
- Local OLED display
- Mobile App remote monitoring
Users can easily check:
- PV generation
- Battery status
- Energy consumption
- Operating parameters
10-Year Factory Warranty
A standard 10-year warranty reduces after-sales risks for:
- Solar distributors
- EPC contractors
- Installation companies
- Residential end users
Global Grid Connection Certifications
The STH series complies with multiple international grid standards, supporting overseas market deployment.
Certified markets include:
- Europe
- Australia
- South Africa
- Southeast Asia
- Other global PV storage markets
3. Application Scenarios
Residential High Voltage PV Storage for Villas & Private Houses
The STH single phase high voltage hybrid inverter is designed for overseas residential applications.
Combined with rooftop solar and high voltage battery storage, it enables:
- Solar self-consumption
- Reduced electricity bills
- Backup power during outages
- Higher household energy independence
Recommended solution:
→ Residential Energy Storage Solution
Single Phase Energy Storage for Small Shops
Small commercial stores can use the system for:
- Peak electricity cost reduction
- Load backup protection
- Continuous operation during power interruption
Typical applications:
- Retail shops
- Small offices
- Workshops
Hybrid On-grid & Off-grid Systems in Weak Grid Areas
For regions with unstable electricity supply, the STH inverter provides:
- Automatic backup switching
- Stable power supply
- Energy independence
Suitable markets:
- Southeast Asia
- Africa
- Island regions
- Remote communities
4. Product Certifications
The STH Series Single Phase High Voltage Hybrid Inverter complies with international safety and grid connection standards.
Certifications:
IEC62109
EN61000
C10/C11
VDE 4105
UNE217001
UNE217002
RD647
RD1699
CEI021
G99
EN62477
NRS097-2-1
EN50549
UE2016/631
TOR Erzeuger Type A
OVE-Richtlinie R 25
5. Model Specifications
| Model | Rated Power | Phase | MPPT Channels | Battery Type | Protection Grade | Warranty |
|---|---|---|---|---|---|---|
| LPH-HSS-3K | 3kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HSS-3.6K | 3.6kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HS-4.2K | 4.2kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HS-4.6K | 4.6kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HS-5K | 5kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HS-6K | 6kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HS-7K | 7kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
| LPH-HS-8K | 8kW | Single Phase | 1 | High Voltage LFP | IP65 | 10 Years |
6. Why Choose STH Single Phase High Voltage Hybrid Inverter?
The STH Single Phase High Voltage Hybrid Inverter provides an optimized solution between traditional low voltage residential storage and large three-phase energy storage systems.
Compared with low voltage hybrid inverters, the high voltage architecture provides:
- Higher system efficiency
- Flexible battery expansion
- Better energy transmission performance
Compared with three-phase hybrid inverters, the single-phase HV design offers a more economical solution for residential applications.
The STH series completes our residential hybrid inverter portfolio together with:
- STH Single Phase Low Voltage Hybrid Inverter
- STH Three Phase High Voltage Hybrid Inverter
Together with HPIXP High Voltage Stackable Energy Storage System, it forms a complete residential high voltage solar storage solution.
We support:
- Bulk wholesale
- OEM branding
- Technical customization
- Distributor cooperation
Contact our sales team for quotations and technical datasheets.
Related Products
HPIXP High Voltage Stackable All-in-One Energy Storage System
High voltage battery storage system for residential PV applications.
STH Single Phase Low Voltage Hybrid Inverter
3kW–8kW low voltage residential hybrid inverter solution.
STH Three Phase High Voltage Hybrid Inverter
Three-phase HV inverter solutions for villas, farms and light commercial projects.
XPB / XPE Low Voltage Lithium Battery Series
Low voltage residential energy storage batteries.
Commercial & Industrial Energy Storage Cabinets
Air-cooled and liquid-cooled ESS solutions for C&I applications.
