51.2V 200Ah LiFePO4 Battery Pack

As a professional domestic manufacturer of energy storage equipment, KTAC TECHNOLOGY has engineered this 51.2V 200Ah LiFePO4 Battery Pack to address a wide range of scenarios—including whole-home energy storage, off-grid residential living, and backup power for small businesses and industrial facilities.

What advantages does it offer compared to traditional floor-standing energy storage batteries?

Unlike the bulky, floor-standing batteries traditionally found on the market, this 51.2V 200Ah LiFePO4 Battery Pack features an ultra-slim profile of just 160mm. With a total weight kept to a manageable 80kg, its wall-mounted design ensures it occupies absolutely no floor space.

Internally equipped with Grade-A LiFePO4 cells from GREAT POWER and paired with our proprietary intelligent BMS (Battery Management System), the unit delivers a multitude of benefits: an ultra-long cycle life of over 6,000 cycles, adaptability across a wide temperature range, and high compatibility with various inverter systems.

Its modular parallel design allows for flexible capacity expansion, while its compliance with numerous international safety certifications ensures a perfect balance of safety, cost-efficiency, and scalability. It offers a comprehensive, one-stop solution for key energy challenges—from optimizing peak-and-off-peak electricity usage in homes to providing emergency backup during power outages and supplying off-grid power to remote regions.

Detailed Product Specifications

Why is this wall-mounted battery particularly well-suited for residential energy storage?

Ultra-Slim Profile

The 51.2V 200Ah LiFePO4 Battery Pack measures 850 × 500 × 160mm—making it the thinnest unit in its class among 10kWh energy storage batteries on the market. It effectively eliminates the drawbacks associated with traditional floor-standing batteries, such as their bulky footprint and space-consuming nature. Designed to mount flush against the wall, it fits seamlessly into confined spaces—such as garages, utility closets, or dedicated low-voltage rooms in villas—thereby perfectly resolving the industry-wide challenge of accommodating large-scale energy storage equipment within the limited interior space of modern homes.

Lightweight Construction

With a net weight of just 80kg—and supplied with a standard, factory-provided wall-mounting bracket—installation requires neither specialized heavy-lifting equipment nor a large crew of installation personnel. A single certified electrician can independently complete the wall-mounting and wiring connection tasks, significantly reducing installation costs and on-site construction time. This design is suitable for both individual homeowners performing DIY installations and overseas service providers executing large-scale deployment projects.

Sealed, Integrated Enclosure

Boasting an IP20 protection rating, the unit effectively prevents solid foreign objects from entering the internal components. It is ideally suited for dry indoor environments—such as residences, small shops, and offices—and can also be housed within a waterproof protective cabinet for indirect use in outdoor settings, offering environmental adaptability far superior to that of standard floor-standing energy storage batteries.

How does the battery cell configuration ensure long-term power supply stability?

- Premium-Brand, Factory-Original Cells: The entire product series is equipped with Grade A LiFePO4 (Lithium Iron Phosphate) cells from GREAT POWER, utilizing a mature 1P16S cell arrangement scheme. LiFePO4 chemistry inherently resists thermal runaway; compared to ternary lithium batteries, it offers superior high-temperature tolerance, resistance to degradation, and enhanced safety. This fundamentally eliminates the risk of safety incidents—such as spontaneous combustion or cell swelling—making it ideal for long-term, uninterrupted energy storage operations.

- 6,000-Cycle Lifespan: Standardized laboratory testing—conducted at a constant temperature of 25°C, a 0.2C charge/discharge rate, and a 90% depth of discharge—demonstrates a battery cycle life of ≥6,000 cycles. The 51.2V 200Ah LiFePO4 Battery Pack features an official design lifespan of up to 15 years. It exhibits extremely low capacity degradation over years of use, helping users minimize the frequency of battery replacements and reduce long-term maintenance and operational costs for their energy storage systems.

- Optimized Electrical Thresholds: With a rated voltage of 51.2V, the unit maintains a standard operating voltage range of 43.2V–57.6V and features a recommended charging voltage of 57.6V, complemented by a built-in low-voltage cutoff protection mechanism at 43.2V. These parameters are precisely calibrated to match the standard electrical specifications of residential solar energy storage systems, preventing cell damage caused by overcharging or over-discharging, and providing long-term protection for both the battery unit itself and the downstream electrical appliances it powers.

What maintenance and operational challenges can the intelligent BMS system resolve?

Pre-charge Protection

Our proprietary, upgraded Battery Management System (BMS) features a robust pre-charge function. This enables a smooth transition into power supply mode, suppressing instantaneous inrush currents to effectively safeguard downstream loads—such as inverters and household appliances—against high-voltage spikes during startup that could otherwise cause component breakdown. This significantly reduces the overall equipment failure rate.

Active Cell Balancing

The integrated BMS features an active balancing function that monitors and equalizes voltage and capacity discrepancies across the 16-cell series in real-time. This prevents premature aging in individual cells from dragging down the performance of the entire battery pack, ensuring every cell operates at peak efficiency while simultaneously extending the overall service life of the battery system.

Dual Communication Protocols

Equipped as standard with two mainstream communication protocols—CAN and RS485—the system requires no additional adapter modules. It offers seamless compatibility with the vast majority of hybrid PV inverters from domestic and international manufacturers, including Deye, GoodWe, Sungrow, and Victron, making it suitable for both new installations and retrofit projects involving solar energy storage.

Remote Intelligent O&M

Supports remote acquisition of real-time operational data and cloud-based OTA (Over-the-Air) firmware updates. This allows installers and end-users to perform online troubleshooting and system software updates without the need to physically open the unit, thereby significantly reducing the complexity of after-sales maintenance and support for large-scale projects.

Can its wide operating temperature range accommodate regions with complex climates?

- Zonal Temperature Management: The system supports charging within a temperature range of 0°C to 65°C, while discharging covers an exceptionally wide range from -20°C to 65°C. This ensures stable performance across diverse climatic zones—including hot tropical regions, temperate zones with four distinct seasons, and cold polar areas—meeting the energy storage requirements of most countries and regions worldwide.

- Intelligent Power Derating Protection: For low-temperature ranges (-10°C to 10°C) and high-temperature ranges (40°C to 50°C), the BMS automatically implements a power derating strategy to limit charging and discharging currents. Should the temperature exceed the safe operating range, the system immediately cuts power and locks down to protect the battery cells at the hardware level, preventing irreversible damage.

- High-Altitude Adaptability: The 51.2V 200Ah LiFePO4 Battery Pack supports installation at altitudes of up to 3,000 meters. This makes it suitable for use in mountain residences, high-altitude communication base stations, and off-grid solar projects in mountainous terrain, effectively overcoming geographical limitations typically associated with energy storage equipment. Furthermore, the device operates reliably within a humidity range of 5% to 90% (non-condensing), making it well-suited for use in humid coastal regions. How does the capacity expansion mode adapt to energy storage projects of varying scales?

- Modular Parallel Connection: Supports the parallel networking of up to 16 units of the same model. The wiring logic is simple—requiring no additional parallel connection accessories—allowing even novices to quickly complete capacity expansion operations and lowering the technical threshold for project retrofits.

- Gradual Upgradability: A single battery unit provides a base storage capacity of 10.24 kWh; when fully configured in parallel, the total capacity can exceed 163 kWh. Users can start with a single unit based on their current electricity needs, then add more batteries later for home expansion or commercial project upgrades, without needing to replace the entire energy storage system. This effectively helps control initial procurement costs.

- Unified, Coordinated Power Supply: When multiple units are connected in parallel, the system automatically balances and distributes the charging and discharging loads. This prevents any single battery unit from becoming overloaded, resulting in enhanced operational stability for the entire parallel-connected unit assembly. It is ideally suited for whole-home energy storage and small-to-medium-scale commercial and industrial (C&I) all-weather energy storage projects.

What safety certifications and built-in protection features are included?

- Multiple Authoritative International Certifications: The 51.2V 200Ah LiFePO4 Battery Pack has obtained IEC62619 safety certification specifically for energy storage systems, UN38.3 certification for air transport, CE certification for EU safety standards, and CEC certification for California energy efficiency. It fully meets the import clearance and market entry standards of major markets—including Europe, North America, Southeast Asia, and Africa—empowering buyers to expand into overseas markets without regulatory hurdles.

- Built-in High-Power Circuit Breaker: The unit features an integrated 200A DC circuit breaker that combines overload protection, short-circuit protection, and circuit isolation functions. During routine equipment inspections or line maintenance, a single button press can cut off power, isolating the circuit to prevent safety accidents associated with live-line operations.

- Comprehensive Cell Protection System: Leveraging the Battery Management System (BMS), the unit implements five core safety protections—against overcharging, over-discharging, overcurrent, overheating, and short circuits. When combined with inherently safe Lithium Iron Phosphate (LiFePO4) battery cells, this creates a dual-layer protection system that comprehensively safeguards the long-term, stable operation of the energy storage system.

What application scenarios is it suitable for?

- Residential Self-Consumption PV

Stores surplus solar energy generated during the day to replace grid power during peak evening hours, effectively reducing peak-time electricity costs and minimizing reliance on the municipal grid. Ideal for comprehensive solar-plus-storage systems in villas and large-scale residences.

- Whole-Home Emergency Backup

Provides continuous power to critical loads—such as refrigerators, lighting, Wi-Fi routers, and home medical equipment—during city grid outages or line maintenance, ensuring uninterrupted daily living and the continuous operation of essential devices.

- Off-Grid Power for Remote Dwellings

Designed for suburban cabins, custom-built rural homes, and remote guesthouses lacking grid access; creates independent off-grid storage systems to resolve common challenges in remote areas, such as high wiring costs and unstable power supply.

- Small-Scale Commercial/Telecom Storage

Deployable as a standalone unit or in parallel configurations, providing both routine power supply and emergency backup for street-front shops, small convenience stores, remote communication base stations, and surveillance equipment, thereby mitigating the risk of business losses caused by power interruptions.

FAQ

1. How many 51.2V-200AH batteries can be connected in parallel?

Up to 16 units can be paralleled, allowing a total energy capacity of over 163 kWh. This makes the system scalable for growing residential or small commercial needs.

2. Can 51.2V 200Ah LiFePO4 Battery Pack be wall-mounted? Is the bracket included?

Yes, the 160mm depth is specially designed for wall mounting. Wall-mounting brackets are provided with each unit. Always ensure the wall can support ~80kg.

3. What is the recommended charge/discharge current for maximum cycle life?

For optimal cycle life, we recommend 100A charge and 100A discharge (approx. 0.5C rate). The battery can handle a maximum of 200A discharge for short durations.

4. Is this battery compatible with my existing hybrid inverter?

The battery uses standard CAN and RS485 communication protocols, making it compatible with most major hybrid inverters (e.g., Victron, GoodWe, Growatt, Sofar, Deye, etc.). Please provide your inverter model for a compatibility check.

5. What happens if the battery is used outside the recommended temperature range?

The BMS will automatically reduce allowable current (derating) between -10°C~10°C and 40°C~50°C. Outside -20°C or above 65°C, the BMS will disconnect to protect the cells.

6. Does the battery have a circuit breaker?

Yes, a built-in 200A DC circuit breaker is integrated for safe installation and maintenance isolation.