20kWh 30kWh 40kWh 50kWh High Voltage Battery Energy Storage System
The Polinovel HV Series delivers high-voltage lithium energy storage in 192V, 240V, 384V, and 480V options for residential and light commercial applications. With automotive-grade manufacturing, advanced BMS, and modular design, these batteries offer stable performance, scalable capacity, and reliable power for homes and businesses alike.
Optimized for Your Energy Needs
High Efficiency, Less Energy Loss
High-voltage system design reduces current flow, minimizes transmission loss, and improves overall system efficiency, delivering more usable energy from every charge cycle.
Built to Automotive Standards
Manufactured with high-consistency LiFePO₄ cells under automotive-grade standards, ensuring stable performance, superior safety, and long service life with low maintenance needs.
Smart Energy Management
Integrated high-voltage control box and smart BMS enable precise monitoring, real-time data exchange, and automatic balancing for optimized battery health and reliable energy output.
Modular and Scalable Design
Modular structure supports flexible series expansion, allowing capacity upgrades as energy requirements increase-ensuring long-term adaptability and investment protection.
Specification
| Model | HV204100 | HV307100 | HV409100 | HV512100 |
| Nominal Voltage | 204.8V | 307.2V | 409.6V | 512V |
| Nominal Capacity | 100Ah | 100Ah | 100Ah | 100Ah |
| Energy | 20.48kWh | 30.72kWh | 40.96kWh | 51.2kWh |
| Charge Cut-off Voltage | 233.6V | 350.4V | 467.2V | 584V |
| Discharge Cut-off Voltage | 160V | 240V | 320V | 400V |
| Standard Charge Current | 50A | 50A | 50A | 50A |
| Max. Charge Current | 100A | 100A | 100A | 100A |
| Constant Discharge Current | 100A | 100A | 100A | 100A |
| Peak Discharge Current | 200A | 200A | 200A | 200A |
| Dimension (L*W*H) mm/in | 600*500*1040 (23.6*19.7*40.9") |
600*500*1360 (23.6*19.7*53.5") |
600*500*1680 (23.6*19.7*66.1") |
600*500*2000 (23.6*19.7*78.7") |
| Weight | 200kg/441lbs | 300kg/661lbs | 400kg/882lbs | 500kg/1102lbs |
| Communication | RS485/CAN | |||
| Temperature | Charge: 0~50℃; Discharge: -15~60℃ | |||
Listed by Leading Inverter Brands
Our batteries are officially listed as compatible by several globally recognized inverter manufacturers. Each product has undergone rigorous testing and validation to ensure seamless communication, reliable operation, and full compatibility across diverse inverter platforms.
How It Works in Practice
Discover the practical applications of our high-voltage battery system in various commercial and industrial settings.
Load Shifting for Demand Charge Reduction
Commercial electricity rates often include demand charges based on peak power consumption. Even a short spike can significantly increase monthly costs.
The HV Series monitors real-time facility load and automatically supplements grid power when approaching target peak levels. During off-peak hours, the battery recharges at lower-cost periods.
A medium-to-large warehouse with HVAC, refrigeration, and material handling equipment experiences high afternoon loads. By deploying appropriately sized HV Series units, the system can shave a portion of peak demand, reducing peak-related charges and smoothing energy costs.
Solar Integration for Energy Independence
Solar arrays generate power during the day, but facilities often need energy during evening or overnight operations. Without storage, excess solar generation may be exported at low rates, while grid electricity is purchased later at higher rates.
The HV Series captures daytime solar production and discharges it during evening peaks or overnight operations. High charge current capability allows rapid energy storage within the solar production window.
A manufacturing facility with rooftop solar and HV Series units can store excess daytime generation. Stored energy is used during evening or night operations, reducing reliance on grid electricity and significantly increasing solar self-consumption.
Grid Backup for Business Continuity
Critical systems require uninterrupted power during grid failures. The HV Series provides automatic switchover, maintaining power to essential loads within milliseconds.
Unlike diesel generators that take several seconds to start and require regular maintenance, the HV Series responds instantly, eliminating power gaps that could lead to system crashes or product loss.
Facilities with temperature-sensitive operations, such as cold storage or medical equipment, can maintain critical functions during grid outages. By deploying appropriately sized HV Series units, the system ensures continuous operation and protects valuable inventory or equipment.
Microgrid Applications
Facilities in remote or grid-edge locations often face reliability challenges. The HV Series can form the foundation of a microgrid, integrating solar generation, battery storage, and optional generator backup.
The series connection capability allows building voltage and capacity tailored to microgrid requirements. Combined with industry-standard communication protocols, the system intelligently prioritizes solar power, supplements with battery energy, and only engages generators when necessary.
A remote industrial operation deployed a microgrid using HV Series batteries, solar panels, and backup generators. The system significantly reduced diesel consumption, lowered operational costs, and improved overall power reliability.
Installation and Integration
Learn about the deployment process, electrical requirements, and maintenance profile of our high-voltage battery system.
Deployment Approach
The cabinet ships as a complete unit with integrated battery management, eliminating the need for field wiring of individual cells. Typical installation for a single unit is straightforward once electrical rough-in is complete.
Electrical Requirements
High-voltage DC systems require proper safety disconnects and grounding. The compact design fits in standard electrical rooms without the need for dedicated battery buildings.
Inverter Compatibility
Compatible with most commercial inverters supporting high-voltage DC input. Hybrid inverters with built-in charge controllers can simplify system architecture for new installations.
Maintenance Profile
LiFePO4 chemistry provides high stability and minimal maintenance. Routine quarterly visual inspections and annual capacity checks cover most needs. Unlike lead-acid batteries, there is no electrolyte watering or terminal cleaning required.
System Expansion
Adding capacity is straightforward with the modular HV Series design. Additional units can be connected in series or parallel, and the integrated communication system allows multiple units to operate as a single, centrally managed battery bank.
System Expansion Options
Series connection for voltage increase
Parallel connection for capacity increase
Centralized BMS for multi-unit management
Scalable communication architecture
Initial Installation
Start with a few units based on current energy requirements
First Expansion
Add more units as energy demand or solar capacity grows
Solar Integration
Expand to match increased solar capacity
Full System
Multiple units can be combined to achieve full capacity
Competitive Positioning
See how the Polinovel HV Series compares to alternative energy storage solutions.
Versus Lower Voltage Systems (48V)
Current Handling
Delivering high power at low voltage requires very high current, increasing conductor sizing and breaker costs. The HV Series provides the same power at much lower current, simplifying system design.
Scalability
Adding capacity to low-voltage systems requires many parallel batteries, which introduces current balancing challenges. High-voltage systems scale easily via series connections, offering simpler and more reliable expansion.
Efficiency
Lower current reduces resistive losses, improving round-trip efficiency for high-power applications.
Versus Lead-Acid Solutions
Usable Capacity
LiFePO4 supports deep discharge, making most of the rated capacity usable without shortening lifespan.
Cycle Life
LiFePO4 provides thousands of cycles at high depth of discharge, vastly exceeding lead-acid alternatives.
Maintenance Burden
LiFePO4 is essentially maintenance-free, unlike lead-acid batteries that require regular water level checks, terminal cleaning, and equalization charging.
Versus Alternative Lithium Chemistries
LiFePO4 has lower energy density than NMC or NCA lithium chemistries but offers superior thermal stability and longevity. For stationary applications where weight isn't critical, the safety profile and 10-15 year lifespan make it the preferred choice for commercial operations.
Key Advantages of LiFePO4:
System Comparison
| Feature | Polinovel HV Series | 48V Lead-Acid | 48V Lithium | NMC Lithium |
|---|---|---|---|---|
| Voltage Range | 204.8V-512V | 48V | 48V | 48V-192V |
| Capacity Range | 20-51 kWh/unit | 5-20 kWh/bank | 10-40 kWh/bank | 10-30 kWh/bank |
| Cycle Life | 4,000-6,000+ cycles @ 80% DoD | 800-1,200 cycles @ 50% DoD | 3,000-5,000 cycles @ 80% DoD | 3,000-4,000 cycles @ 80% DoD |
| Depth of Discharge | 95% | 50% | 80-90% | 80-90% |
| Operating Temp Range | -15°C to 60°C (discharge) | -20°C to 50°C | 0°C to 50°C | 0°C to 50°C |
| Maintenance | Minimal | High | Minimal | Minimal |
| Safety | Excellent | Good | Good | Moderate |
| Installation Complexity | Low | High | Medium | Medium |
| Scalability | Excellent | Poor | Moderate | Moderate |
System Protection
The integrated Battery Management System provides comprehensive safeguards for reliable operation.
Voltage Monitoring
Continuously tracks each cell group, preventing overcharge (which damages cells) and over-discharge (which reduces capacity). The system will disconnect loads if voltage drops below safe thresholds.
Thermal Management
Temperature sensors throughout the pack shut down charging if cells exceed 50°C or disconnect loads if discharge temperatures exceed 60°C. In cold conditions, the system limits charge current until cells reach minimum temperature.
Current Limiting
If discharge current exceeds rated specifications, the BMS progressively reduces available power to prevent damage. This protects against downstream faults or inverter malfunctions.
Communication Fault Detection
Loss of communication between battery and inverter triggers a safe shutdown rather than allowing uncontrolled operation.
Warranty and Longevity
Standard Coverage
5-year warranty on battery capacity, guaranteed to maintain 70% of rated capacity through warranty period under normal operating conditions.
Expected Service Life
With proper operation, the system should deliver 4,000-6,000 cycles at 80% depth of discharge. For daily cycling applications, this represents 15+ years of service. For backup applications with occasional cycling, 20+ year service life is achievable.
Support Infrastructure
Technical support available during system commissioning and throughout operational life. Firmware updates address emerging compatibility requirements or improve system performance based on field data.
Is This Right for Your Operation?
Determine if the Polinovel HV Series is the right energy storage solution for your facility.
This System Makes Sense If
Commercial electricity bills above $3,000 monthly with significant demand charges
Facilities combining solar generation with 24-hour or multi-shift operations
Operations where power quality or reliability directly impacts production or revenue
Sites planning to expand renewable generation capacity over 3-5 years
You Might Want Alternatives If
Your operation is primarily residential-scale (under 30 kWh daily consumption)
You're in a region with flat electricity rates and minimal time-of-use pricing
You need portable or mobile energy storage
Your site lacks adequate electrical infrastructure for high-voltage DC systems
Next Steps
Load Analysis
Start with a load analysis covering 12 months of utility bills. Identify your peak demands, time-of-use patterns, and any outage costs.
Solar Integration Planning
If you have existing solar or are planning installation, calculate your current self-consumption rate. The gap between generation and consumption shows your storage opportunity.
System Design Support
Polinovel provides technical consultation to help match system configuration to your specific requirements. Contact us to discuss your application.
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