51.2V 100Ah LiFePO4 Battery Pack

This 51.2V 100Ah LiFePO4 Battery Pack features a rated energy storage capacity of 5.12kWh. Weighing only 43kg, its slim profile allows for wall-mounted installation—a task that can be easily completed by a single person. This design effectively resolves the common challenges associated with traditional energy storage batteries, such as excessive weight, laborious installation, and large spatial footprints.

The battery cells boast a cycle life exceeding 6,000 cycles, with a designed service life of up to 15 years. It is ideally suited for a diverse range of applications, including apartment balcony solar systems, RVs, small cabins, and compact commercial equipment.

Its modular parallel design facilitates future capacity expansion as needed. Compatible with universal communication protocols, it seamlessly integrates with most mainstream hybrid inverters currently available on the market. Furthermore, we offer customization options for aesthetics, packaging, and system parameters, catering to the specific requirements of both retail end-buyers and international OEM/ODM partners.

What are the Core Advantages?

1. Lightweight Design

This 51.2V 100Ah LiFePO4 Battery Pack has a net weight of just 43kg. With dimensions of 374 × 650 × 143 mm—and a slim profile of only 143 mm in depth—it features a dedicated wall-mounting structure. Eliminating the need for specialized hoisting equipment or multi-person teams, a single individual can easily handle the transport and wall-mounting process. This makes it particularly well-suited for environments with limited space—such as indoor rooms, balconies, and RVs—while significantly reducing labor requirements and installation costs.

2. High-Value, Cost-Effective Entry-Level Solution

Compared to larger-capacity energy storage systems, this product offers a lower initial acquisition cost. Whether for a household's first foray into solar energy storage, a DIY off-grid project, or as an emergency power backup for a small business, it enables users to optimize their energy usage with a reasonable financial investment. Moreover, the system can be expanded later as requirements evolve, offering greater flexibility in financial planning.

3. Ultra-Long Service Life

The product utilizes Grade A Lithium Iron Phosphate (LiFePO4) battery cells. Under conditions of 25°C, a 90% depth of discharge (DOD), and a 0.2C discharge rate, the cells achieve a cycle life of no fewer than 6,000 cycles. The complete system is designed for a service life of 10 to 15 years. Throughout its long-term operation, the battery cells exhibit minimal capacity degradation, ensuring stable power output year-round and reducing the additional costs associated with frequent equipment replacement.

4. Flexible Modular Expansion

The system supports the parallel connection of up to 15 units of the same model. With a single-unit storage capacity of 5.12 kWh, the total capacity can exceed 75 kWh upon expansion. Customers can initially deploy a base unit and subsequently add more battery modules directly as their household electricity needs or solar PV arrays expand—eliminating the need to replace the entire system and ensuring seamless adaptability to long-term energy planning.

5. Wide Operating Temperature Range

With a charging temperature range of 0°C to 65°C and a discharging range of -20°C to 65°C, the unit operates stably in the typical climatic conditions found in most regions. Power derating occurs only during extreme low-temperature intervals (-10°C to 10°C) or high-temperature intervals (40°C to 50°C). Certified for installation at altitudes up to 3,000 meters, the system performs reliably in diverse environments, ranging from urban and rural settings to mountainous regions.

Safety and Intelligent Features

1. Multiple International Certifications

Utilizing inherently safe Lithium Iron Phosphate (LiFePO4) materials, the product poses no risk of thermal runaway. The complete system holds four major international certifications—IEC62619, UN38.3, CE, and CEC. Additionally, it features a built-in 100A DC circuit breaker that serves both protective and isolation functions, fully complying with indoor electrical safety standards and ensuring complete regulatory compliance for indoor wall-mounted installations.

2. Full-Featured Intelligent BMS

Equipped with a proprietary intelligent Battery Management System (BMS), the unit features a pre-charge function that effectively safeguards downstream inverters and electrical loads. It also incorporates an active cell balancing function to equalize the state of charge across individual cells, thereby extending the overall service life of the entire battery pack. Furthermore, the system supports multiple communication protocols—including CAN, RS485, and Wi-Fi—enabling remote monitoring of operational data and online firmware updates for convenient and efficient maintenance and operation.

3. Standard Protection Rating

The 51.2V 100Ah LiFePO4 Battery Pack features an IP30 protection rating, effectively preventing the ingress of small foreign objects and making it suitable for use in dry indoor environments. The unit boasts a robust, sealed structural design with an operating temperature and humidity range of 5% to 90% (non-condensing), ensuring stable, long-term operation in typical indoor settings such as homes, offices, and retail shops.

Product Parameter Table

Key Application Scenarios

1. Apartment/Balcony PV Energy Storage

Specifically designed for small-sized homes and apartment balcony PV systems, this unit allows you to store electricity using just one or two solar panels. By utilizing this stored power during peak demand periods, you can effectively reduce electricity bills without the need for extensive home renovations; the flexible installation requires minimal space.

2. Home Emergency Backup Power

In the event of a sudden power outage, the unit provides continuous power to essential devices—such as indoor lighting, Wi-Fi routers, small refrigerators, and mobile phone chargers—ensuring basic household electricity needs are met and eliminating the inconvenience caused by power interruptions.

3. Off-Grid Power for Mobile/Compact Spaces

Its lightweight design makes it ideal for use in RVs, mobile homes, and small cabins in remote areas. In regions without municipal grid coverage, it enables the creation of a stable off-grid power system, satisfying the electricity demands of mobile lifestyles and remote living.

4. DIY PV System Projects

With standardized specifications and simple installation, this unit is perfect for PV enthusiasts and beginners looking to build their own energy storage systems. Its use of universal components and low commissioning complexity make it highly accessible and easy to get started with.

5. Emergency Power for Small Shops/Offices

It provides power outage protection for retail POS systems, security cameras, and office communication equipment, preventing business interruptions and data loss caused by blackouts, thereby safeguarding the smooth operation of small and micro-enterprises.

6. Phased Home Energy Storage Upgrades

You can start by purchasing a single 51.2V 100Ah LiFePO4 Battery Pack to establish a foundational energy storage system. Later, as your household grows and the number of electrical appliances increases, you can gradually expand capacity by connecting additional units in parallel, perfectly aligning with your family's evolving electricity needs.

Customization and Partnership Services

1. Appearance Customization

We offer customization options for the battery enclosure's color scheme and physical design. We can create exclusive aesthetic styles tailored to your brand's visual identity requirements, enabling you to develop differentiated products suitable for sale under your own private label. 

2. Packaging Customization

Based on client export standards, market sales demands, and logistics and transportation requirements, we customize exclusive outer packaging styles, materials, and printed content to meet the specific shipping and retail display requirements of various countries and regions.

3. System Parameter Customization

Our professional technical team can precisely fine-tune BMS operating parameters to ensure compatibility with client-specified inverter models and photovoltaic equipment. This guarantees the stable, synchronized operation of the entire system and enhances overall integration performance.

4. OEM/ODM Manufacturing Services

As a robust manufacturing facility, KTAC TECHNOLOGY accepts orders for both private-label manufacturing and fully customized products. Leveraging our mature production lines, we ensure reliable delivery schedules—consistently maintaining a lead time of 10–15 days—making us an ideal partner for bulk export procurement, brand private labeling, and similar collaborative models.

Authoritative Certifications

The 51.2V 100Ah LiFePO4 Battery Pack has undergone rigorous third-party testing and holds multiple internationally recognized certifications, ensuring worry-free customs clearance, system integration, and indoor installation worldwide.

Why Choose the 51.2V 200Ah Over the 100Ah Version?

Both the 100Ah and 200Ah models share the same wall-mounted design philosophy, Grade-A LiFePO₄ cell quality, intelligent BMS, and international certifications. However, they serve distinctly different user profiles and application scales. Below is a clear comparison to help you make the right choice for your specific needs.

Quick Comparison Table

FAQ

1. How many 51.2V-100AH batteries can be connected in parallel?

Up to 16 units can be paralleled, providing a total capacity of over 80 kWh. This allows you to start small and scale as needed.

2. Can one person install 51.2V 100Ah LiFePO4 Battery Pack?

Yes. With a net weight of only 43 kg and wall-mounting brackets included, a single person can safely lift and install it. We still recommend using proper lifting techniques or assistance for safety.

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

For optimal cycle life, we recommend 50A charge and 50A discharge (approx. 0.5C). The battery can handle up to 100A discharge for short periods.

4. Is it compatible with my existing hybrid inverter?

Yes, the battery uses standard CAN and RS485 protocols. It works with most major hybrid inverters from brands like Victron, GoodWe, Growatt, Sofar, Deye, and many others. Please provide your inverter model for compatibility verification.

5. Does the 100Ah version have a built-in circuit breaker?

Yes, it comes with a built-in 100A DC circuit breaker for safe installation and maintenance isolation.

6. Can this battery be used outdoors?

The IP30 rating is for indoor use only. For outdoor applications, please install it in a weatherproof enclosure or choose our outdoor-rated models.

7. What is the typical payback period?

Depending on local electricity rates and solar setup, many customers see a payback period of 3-6 years when used for daily peak shaving or self-consumption. 

Real Commitment

20+ years of continuous power supply manufacturing experience (since 2004)

3 factories, 8,000+ m² production floor

100+ professional staff including dedicated QA and after-sales engineers

Exported to 30+ countries across Asia, Africa, Europe, and the Americas

Clients include AVTEK, POWERMAN, and Tier-1 distributors in Thailand, South Africa, and the UK