12V 400Ah LiFePO4 Battery

Introducing the 12V 400Ah LiFePO4 Battery, a high-capacity energy solution manufactured in China, tailored for demanding applications such as off-grid power systems, RVs, and marine use. Utilizing advanced lithium iron phosphate (LiFePO4) technology, this robust battery delivers exceptional performance and reliability, making it an ideal choice for OEM, ODM, and wholesale buyers.

Key Features

• High Capacity: With a nominal capacity of 400Ah and an energy output of 5.12kWh, this battery is perfect for powering larger systems and appliances efficiently.
• Long Cycle Life: Designed to last over 4,000 cycles at 80% Depth of Discharge (DOD), ensuring longevity and significantly reducing long-term replacement costs.
• Wide Operating Temperature Range: Functions efficiently in temperatures ranging from -20°C to 60°C, making it suitable for various environments and applications.
• Advanced Battery Management System (BMS): Provides comprehensive protection against overcharging, over-discharging, and short circuits, enhancing safety during operation.
• Customizable Options: Available for OEM/ODM projects, allowing tailored specifications to meet unique requirements for various applications.

Product Description

The 12V 400Ah LiFePO4 Battery is engineered for those who require reliable and efficient energy solutions in a high-capacity format. Key specifications include:

• Nominal Voltage: Operates at 12.8V, providing stable power output for various devices.
• Energy Output: Delivers an energy capacity of approximately 5.12kWh, ensuring long-lasting performance without frequent recharging.
• Weight: Approximately 39 kg (86 lbs), making it lightweight compared to traditional lead-acid batteries while still providing robust power.
• Dimensions: Measures 523 x 269 x 218 mm (20.6 x 10.6 x 8.6 inches), allowing for easy installation in various applications including RVs, marine vessels, and solar systems.

This battery supports a maximum continuous charge and discharge current of 100A, making it ideal for high-demand situations. The robust construction features an IP65 rating, providing protection against dust and water ingress, ensuring reliable operation even in challenging environments.

• Smart BMS Features: The intelligent BMS continuously monitors critical parameters such as State of Charge (SOC), voltage, current, and temperature. It safeguards against potential risks by preventing overcharging, overheating, and short circuits.
• Flexible Charging Options: Compatible with various charging systems; the recommended charge voltage is between 14.2V to 14.6V.
• Maintenance-Free Operation: Designed for long-term storage without the need for regular maintenance or electrolyte replacement, offering convenience for users.

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For OEM/ODM clients, we offer extensive customization options including Bluetooth connectivity and LCD displays for enhanced monitoring capabilities. Our flexible delivery terms such as FOB, EXW, and CIF ensure that your orders are processed promptly within specified timelines.Compliant with international safety standards such as UL, CE, and RoHS, the 12V 400Ah LiFePO4 Battery is a dependable choice for automotive, renewable energy, marine, and backup power applications. Whether you are looking to stock up for wholesale distribution or seeking custom solutions for your brand, this battery represents an exceptional investment in performance and durability.Choose the 12V 400Ah LiFePO4 Battery to meet your energy storage needs efficiently while enjoying the benefits of advanced lithium technology tailored for today’s diverse applications! Contact us today to discuss how we can fulfill your specific requirements with our innovative battery solutions!

A 12V 400Ah LiFePO4 battery provides high capacity and long life through advanced lithium iron phosphate chemistry, offering over 4000 deep cycles at 80% depth of discharge. Equipped with a smart Battery Management System (BMS), it ensures safety, stable voltage output, and efficient energy storage for residential, commercial, and off-grid applications.

What are the key features of a 12V 400Ah LiFePO4 battery?

The 12V 400Ah LiFePO4 battery typically delivers 5120Wh of energy with a nominal voltage of 12.8V. It supports continuous charge and discharge currents up to 200-250A, depending on the model. The battery is lightweight compared to lead-acid alternatives, often weighing around 50-55 lbs, and comes with an integrated BMS protecting against overcharge, over-discharge, short circuits, and temperature extremes. It features low self-discharge and high efficiency with minimal maintenance requirements.

How does the Battery Management System (BMS) ensure safety and longevity?

The BMS monitors individual cell voltages, current, and temperature to prevent unsafe conditions such as overcharging, deep discharge, overheating, and short circuits. It balances cells to maximize usable capacity and prolong battery life. Advanced BMS units provide communication interfaces like RS485 or Bluetooth for real-time monitoring and diagnostics, enabling proactive maintenance.

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Why is LiFePO4 chemistry ideal for high capacity and long life?

LiFePO4 chemistry offers superior thermal stability, safety, and longevity compared to other lithium-ion batteries. It supports deep discharge cycles without significant capacity loss and maintains a stable voltage output. Its non-toxic composition and recyclability align with sustainable energy goals. Additionally, LiFePO4 batteries charge faster and have a lower self-discharge rate than lead-acid batteries.

What applications are best suited for a 12V 400Ah LiFePO4 battery?

This battery is ideal for off-grid solar systems, RVs, marine vessels, backup power, and commercial energy storage. Its high capacity and long cycle life make it suitable for applications requiring reliable, sustained power over extended periods.

How does temperature affect the performance and lifespan of the battery?

LiFePO4 batteries operate efficiently within a wide temperature range, typically from -20°C to 60°C for discharge and 0°C to 55°C for charging. Extreme temperatures can reduce charging efficiency or shorten battery life. Some models include built-in heaters for cold climates to maintain optimal performance.

What are the charging and discharging specifications of the 12V 400Ah battery?

The battery supports continuous discharge currents of up to 200-250A and peak discharge currents higher for short bursts. Charging voltage is usually around 14.4V with a CC/CV charging profile. It features a low self-discharge rate of less than 5% per month, ensuring energy retention during storage.

Charging and Discharging Specifications

How should you install and maintain a 12V 400Ah LiFePO4 battery?

Installation requires secure mounting in a well-ventilated area with correct polarity wiring. The battery can be installed in any orientation due to its sealed design. Maintenance is minimal, typically involving periodic terminal cleaning and ensuring the battery is charged and stored within recommended temperature ranges. Using compatible chargers and avoiding deep discharge extends battery life.

How can multiple 12V 400Ah batteries be connected for expanded capacity or voltage?

Multiple batteries can be connected in parallel to increase capacity (amp-hours) or in series to increase voltage (e.g., 24V, 36V, or 48V systems). Proper matching and BMS coordination are essential to ensure balanced charging and discharging.

What environmental benefits does a LiFePO4 battery provide?

LiFePO4 batteries have longer lifespans, reducing waste and raw material consumption. They contain no heavy metals like lead or cadmium, making them safer for the environment. Their high efficiency reduces energy loss, lowering carbon footprints in energy storage applications.