Lead Acid Replacement Battery-Why choose ONESUN 12.8V & 25.6V LiFePO4 Solar Battery？-OneSun

In the context of the global energy transition and rapid advancements in energy storage technology, traditional lead-acid batteries are increasingly being replaced by higher-performance, longer-lasting lithium solutions. As a world-renowned battery manufacturer, **ONESUN** proudly introduces its **Lead Acid Replacement Battery – L Series**, available in L-12.8V 200Ah / 314Ah / 400Ah and L-25.6V 200Ah / 314Ah models. These versatile configurations are designed to meet diverse power demands, including residential energy storage, RV systems, telecom base stations, off-grid solar systems, and industrial backup power applications.

The ONESUN L Series is built with Grade A LiFePO4 cells, delivering over 3,000 cycles at 80% Depth of Discharge (DOD) under 25°C conditions. Compared to conventional lead-acid batteries, this significantly extends service life and dramatically reduces long-term operational costs. An advanced built-in Battery Management System (BMS) provides comprehensive protection against overcharge, over-discharge, overcurrent, short circuit, and temperature fluctuations (OVP/UVP/OCP/SCP), ensuring maximum safety and stable performance.

In addition, the battery supports accurate SOC estimation, intelligent cell balancing, sleep and wake-up functions, and Bluetooth connectivity for real-time monitoring. This smart energy management capability enhances user convenience and operational transparency.

echnical Data – LiFePO4 Battery Series
Parameter	L-12.8V200Ah	L-12.8V314Ah	L-12.8V400Ah	L-25.6V200Ah	L-25.6V314Ah
Cell Type	LiFePO4	LiFePO4	LiFePO4	LiFePO4	LiFePO4
Nominal Capacity	200Ah	314Ah	400Ah	200Ah	314Ah
Energy	2.56kWh	4.02kWh	5.12kWh	5.12kWh	8.04kWh
Nominal Voltage	12.8V	12.8V	12.8V	25.6V	25.6V
End-of-charge Voltage	14.5V	14.5V	14.5V	29V	29V
End-of-discharge Voltage	10.5V	10.5V	10.5V	21V	21V
Max Charge Current	100A	157A	200A	100A	157A
Max Continuous Discharge Current	100A	157A	200A	100A	157A
Max Instantaneous Discharge Current	200A	314A	400A	200A	314A
Overcurrent Protection	120A	180A	240A	120A	180A
Temperature Protection	YES	YES	YES	YES	YES
SOC Estimation	YES	YES	YES	YES	YES
Intelligent Balance	YES	YES	YES	YES	YES
Parallel Connection	YES	YES	YES	YES	YES
Sleep and Wake-up	YES	YES	YES	YES	YES
Enclosure Protection Rating	IP54	IP54	IP54	IP54	IP54
Communication Interface	BT	BT	BT	BT	BT
Display	BT app	BT app	BT app	BT app	BT app
Operating Temperature	Charging: 0°C to 55°C; Discharging: -20°C to 55°C	Charging: 0°C to 55°C; Discharging: -20°C to 55°C	Charging: 0°C to 55°C; Discharging: -20°C to 55°C	Charging: 0°C to 55°C; Discharging: -20°C to 55°C	Charging: 0°C to 55°C; Discharging: -20°C to 55°C
Cycle Life	≥3000 cycles @SOH≥80%, 0.5C, 25°C	≥3000 cycles @SOH≥80%, 0.5C, 25°C	≥3000 cycles @SOH≥80%, 0.5C, 25°C	≥3000 cycles @SOH≥80%, 0.5C, 25°C	≥3000 cycles @SOH≥80%, 0.5C, 25°C
Storage Temperature	-30°C to 60°C	-30°C to 60°C	-30°C to 60°C	-30°C to 60°C	-30°C to 60°C
Storage Humidity	≤90% RH	≤90% RH	≤90% RH	≤90% RH	≤90% RH
Standard Environmental Condition	Temperature: 25°C±2°C; Humidity: 15%-95% RH; Atmospheric Pressure: 86kPa-106kPa; Altitude: ≤3000m	Temperature: 25°C±2°C; Humidity: 15%-95% RH; Atmospheric Pressure: 86kPa-106kPa; Altitude: ≤3000m	Temperature: 25°C±2°C; Humidity: 15%-95% RH; Atmospheric Pressure: 86kPa-106kPa; Altitude: ≤3000m	Temperature: 25°C±2°C; Humidity: 15%-95% RH; Atmospheric Pressure: 86kPa-106kPa; Altitude: ≤3000m	Temperature: 25°C±2°C; Humidity: 15%-95% RH; Atmospheric Pressure: 86kPa-106kPa; Altitude: ≤3000m
Size (W×D×H)	525240220mm	525270220mm	mm	mm	mm
Weight	22kg	26kg	kg	kg	kg
Certifications	CE, UN38.3, MSDS	CE, UN38.3, MSDS	CE, UN38.3, MSDS	CE, UN38.3, MSDS	CE, UN38.3, MSDS

Designed with standard lead-acid battery dimensions, the L Series enables true plug-and-play replacement without the need for system modifications. Its lighter weight and higher energy density make transportation and installation easier and more efficient. The system supports up to four units connected in series, allowing flexible voltage expansion and higher capacity configurations. It is fully compatible with mainstream inverter brands, ensuring seamless integration into existing solar and backup systems.

ONESUN Lead Acid Replacement Batteries are certified with CE, CCC, and MSDS, meeting international quality and safety standards. Featuring moisture-resistant, mildew-proof, and salt-spray-resistant conformal coating protection, the batteries are engineered for reliable operation in harsh environments, including high humidity, high temperature, and coastal regions. The product comes with a 2-year warranty and a design lifespan exceeding 3 years, providing dependable performance assurance.

Honorary-news

With over a decade of experience in lithium battery research, development, and manufacturing, ONESUN delivers not only standardized products but also comprehensive OEM and ODM battery pack solutions for global partners. From customized capacity design and exterior branding to communication protocol integration and system-level optimization, ONESUN offers one-stop manufacturing support tailored to market positioning and project requirements, helping partners strengthen competitiveness and expand market share.

Portable Solar Generator Systems

As a trusted brand in the global energy storage industry, ONESUN remains committed to quality excellence and technological innovation. For more product details and cooperation opportunities, Choosing ONESUN Lead Acid Replacement Battery means choosing a safer, more efficient, and more cost-effective energy upgrade solution.

Article Source: Lithium battery manufacturer - ONESUN China

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