51.2V 280AH High-Voltage Energy Storage Battery

51.2V 280Ah High-Voltage Energy Storage Battery Manufacturer | Wholesale Factory

Wholesale 51.2V 280Ah high-voltage energy storage battery from a Chinese factory. LiFePO4 6000+ cycles, 10-year warranty. Request a technical quote.

Product Overview & System Integration

This 51.2V 280Ah High-Voltage Energy Storage Battery module is engineered for high-voltage configurations (200V–800V) in commercial and industrial (C&I) photovoltaic installations and large-scale off-grid microgrids. The modular architecture connects via a high-voltage Battery Control Unit (BCU) in a full-series electrical configuration, interfacing directly with three-phase high-voltage inverters to minimize DC-side conversion losses and maximize total system efficiency. As a direct Chinese manufacturer and factory, we maintain comprehensive technical capabilities to support proprietary hardware and tooling development, custom BMS printed circuit board (PCB) adaptation, and complete electrical system design. We perform deep OEM/ODM modifications, pre-configured to the client's specified voltage range, enclosure dimensions, and communication protocols (CAN, RS485).

Material & Technical Specifications

Quality Control & Global Standards

Our factory and supplier operations enforce a strict four-stage quality control protocol to guarantee product consistency across bulk shipments. Each batch of 280Ah cells undergoes 100% laser welding flaw detection, capacity grading, and static voltage differential testing before module assembly. Completed battery modules are subjected to 72-hour full-load charge-discharge aging tests on automated testing rigs. The factory holds TUV, CE, and RoHS certifications, accompanied by UN38.3 compliance reports and MSDS safety documentation for international lithium transport. Every high-voltage, high-capacity unit undergoes 100% insulation resistance and dielectric withstand testing at 2000V AC minimum between the high-voltage bus and the chassis before leaving the factory, eliminating electrical hazards in C&I applications.

Packaging & Logistics Safety

This product is classified as Class 9 Dangerous Goods (UN3480). Our factory utilizes reinforced export packaging compliant with the International Maritime Dangerous Goods (IMDG Code) standards. Individual modules are placed inside custom anti-static EPE foam shock-absorption liners, housed within heavy-duty 9-layer corrugated outer cartons. Bulk orders are consolidated onto fumigation-free wooden or reinforced steel pallets, secured with high-tensile strapping, and overwrapped with multiple layers of stretch film and heavy-duty edge protectors. During container loading, pallets are locked in four directions using cargo tension belts and timber bracing frames to prevent movement and kinetic impact during maritime transit.

Typical Application Scenarios

Commercial Rooftop PV Microgrids: Paired with three-phase storage inverters for peak shaving, load shifting, and optimizing local self-consumption.

Solar Irrigation Power Systems: Delivering high-voltage DC or AC power to drive water pumps and automated agricultural irrigation systems in remote off-grid sectors.

Remote Telecom Stations: Providing redundant backup power with a 15-year design life for high-capacity telecom racks under extreme environmental conditions.

Containerized Energy Storage Systems: Serving as the standard base battery sub-unit for matrix deployment in megawatt-scale (MW) utility storage containers.

FAQ

Q: How does this 51.2V 280Ah battery module interface with commercial three-phase high-voltage inverters?

A: The integrated smart BMS features pre-coded CAN, RS485, and Modbus protocols. Adjusting DIP switches changes the firmware profile for direct pairing with three-phase high-voltage inverters from Deye, Solis, Growatt, and Sungrow. The Battery Control Unit aggregates total voltage, current, and cell extremes, ensuring precise closed-loop system operation.

Q: What is the capacity degradation profile of the battery after 6000 cycles in high-voltage series operation?

A: Operating at 25°C, 0.5 °C charge/discharge, and 80% DOD, this battery pack follows a linear power guarantee. Annual capacity degradation remains under 2% for the first 3000 cycles; at 6000 cycles, retained capacity is ≥80% of nominal rating. Active balancing (1–5A) prevents cell voltage divergence, avoiding early system derating.

Q: What are the lead times for factory OEM tooling, enclosure customization, and laser-etched branding for large EPC projects?

A: Laser-etched branding and custom packaging for standard enclosures take 7 working days from artwork approval. For new enclosure molds, electrical interface changes, or custom PCB routing, factory R&D tooling requires 21–25 working days. Initial batch samples will be delivered within 10 working days post-tooling for third-party validation.