Product Overview

This 12.8V 100Ah LiFePO4 lithium battery is a high-capacity portable energy storage solution designed for recreational vehicles, marine systems, and residential backup power applications. With a total energy output of 1280Wh, it provides stable and efficient power supply for off-grid and mobile energy systems.

Built with lithium iron phosphate chemistry, the battery delivers strong safety performance, long cycle life, and high energy efficiency. It is suitable for both daily cycling and backup usage scenarios where reliability and portability are essential.

Key Features

The battery is designed with a compact and portable structure, making it easy to install and transport for mobile applications such as RVs, caravans, and boats. Its ABS housing provides a balance of durability and lightweight construction, while also offering protection against environmental impact.

With Bluetooth communication support, users can monitor battery status in real time through mobile devices, improving usability and system management. The integrated BMS ensures stable operation by protecting the battery against electrical and thermal risks.

Compared with traditional lead-acid batteries, this LiFePO4 solution offers significantly higher cycle life, deeper discharge capability, and improved energy efficiency, making it a more cost-effective long-term solution.

Electrical Performance

The battery operates at a nominal voltage of 12.8V with a rated capacity of 100Ah, delivering 1280Wh of usable energy. Internal resistance is kept at ≤25mΩ, supporting stable discharge performance and reduced energy loss.

Energy conversion efficiency is ≥98%, and self-discharge remains below 5% per month, allowing reliable long-term storage. The battery supports a 4S single-module configuration and is built using LiFePO4 cells for enhanced safety and stability.

The overall weight is approximately 10.25kg, making it suitable for portable and mobile installations where weight is a critical factor.

Discharge Performance

The battery supports a continuous discharge current of 100A, enabling it to power high-demand DC loads in RV and off-grid systems. It can also handle short pulse discharge currents up to 160A for up to 10 seconds.

The recommended discharge cut-off voltage is 10V, while the BMS protection cut-off is also set at 10V. The system reconnects automatically at 12V after recovery. In abnormal short-circuit conditions, protection is activated within 300–800 microseconds to ensure safety.

Charging System

Charging is managed through a CC-CV algorithm to ensure stable and efficient energy storage. The recommended charging voltage range is 14.2V to 14.6V, with a float voltage range of 13.5V to 13.8V for long-term maintenance charging.

The recommended charging current is 50A, while the maximum allowable charging current is 100A for fast charging scenarios. The BMS charging cut-off voltage is set at 14.6V to prevent overcharging and protect battery cells.

Mechanical Design and Protection

The battery adopts a compact structure measuring 307 × 169 × 208mm and uses a durable ABS housing for mechanical strength and lightweight performance. It is rated IP65 for protection against dust and water ingress, making it suitable for outdoor and semi-outdoor environments.

M8 terminals are used for secure electrical connection, ensuring stable current transmission during high-load operation.

Cycle Life and Reliability

This LiFePO4 battery is rated for more than 4000 cycles at 80% depth of discharge under 1C conditions at 25°C. This long cycle life significantly reduces replacement frequency compared with traditional lead-acid batteries, improving overall cost efficiency in long-term use.

Application Areas

The 12V 100Ah portable lithium battery is widely used in RV power systems, caravans, boats, marine energy systems, home backup power, solar energy storage systems, and portable off-grid applications. Its combination of portability, high capacity, and long lifespan makes it suitable for both mobile and stationary energy needs.