Description
Overview
The Redway Power 12V 400Ah Lithium Battery offers robust energy storage for demanding applications, including off-grid systems, RVs, and marine use. Built with advanced LiFePO4 technology, this high-capacity battery delivers reliable performance, extended lifespan, and OEM customization options, making it a top choice for manufacturers and wholesale buyers seeking premium power solutions.
Key Features
- High Energy Density: With 400Ah capacity and 5.12kWh output, it powers large systems efficiently.
- Extended Cycle Life: Over 4000 cycles at 80% DOD ensure long-term value.
- Temperature Resilience: Operates flawlessly from -20¡ãC to 60¡ãC, ideal for harsh environments.
- Integrated BMS: Advanced protection against overcharge, over-discharge, and short circuits.
- Custom OEM Solutions: Tailored specifications for unique project requirements.
Product Description
Engineered for reliability, the Redway Power 12V 400Ah Lithium Battery combines a compact design (523 x 269 x 218 mm, 39 kg) with premium LiFePO4 cells, ensuring safety and stability. Its 12.8V output supports continuous 100A charge/discharge, while the IP65-rated housing resists dust and water. Optional Bluetooth and LCD displays enable real-time monitoring, and certifications like UL and CE guarantee compliance. With a 10-year design life, it excels in automotive, marine, solar, and backup power systems.
Applications
Ideal for renewable energy storage, RV power systems, marine electronics, industrial equipment, and emergency backup solutions. Its versatility and OEM adaptability make it a preferred choice for manufacturers integrating high-performance lithium batteries into custom or large-scale projects.
Why Choose Us
As a leading lithium battery manufacturer, we prioritize quality, innovation, and customer-centric solutions. Our Redway Power 12V 400Ah Lithium Battery reflects rigorous testing, scalable OEM/ODM support, and global certifications. Partner with us for competitive pricing, technical expertise, and dependable energy solutions tailored to your brand¡¯s needs.
A 12V 400Ah LiFePO4 battery delivers approximately 5120Wh of reliable, high-density energy with over 4000 deep charge cycles, offering fast charging, long lifespan, and advanced safety features. Its integrated 250A Battery Management System (BMS) ensures optimal performance and protection, making it ideal for solar, RV, marine, and off-grid applications that demand clean, efficient, and maintenance-free power.
What are the key specifications of a 12V 400Ah LiFePO4 battery?
The 12V 400Ah LiFePO4 battery typically features a nominal voltage of 12.8V and a rated capacity of 400Ah, providing 5120Wh usable energy. It supports a continuous discharge and charge current of up to 250A, with a peak discharge current of 500A for short bursts. The battery weighs approximately 80 lbs (36 kg) and measures about 20.47 x 10.59 x 8.66 inches. It includes premium EV-grade prismatic cells, an IP65-rated waterproof and dustproof ABS housing, and a 250A BMS for comprehensive protection.
How does LiFePO4 technology enhance battery performance?
LiFePO4 chemistry offers superior thermal stability, higher energy density, and longer cycle life compared to lead-acid batteries. It supports fast charging at 1C rate, maintains stable voltage output under heavy loads, and performs efficiently across a wide temperature range (-20°C to 60°C). This technology reduces weight by about 40% compared to lead-acid equivalents and eliminates maintenance needs such as watering or equalizing.
Why choose a 12V 400Ah LiFePO4 battery over lead-acid batteries?
Compared to lead-acid batteries, 12V 400Ah LiFePO4 batteries provide:
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Over 4000 cycles at 100% Depth of Discharge (DoD), far exceeding lead-acid cycle life
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Maintenance-free operation with no acid or gas emissions
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Faster charging and support for multiple charging sources including solar and alternators
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Higher energy efficiency and consistent power delivery
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Enhanced safety with built-in BMS protections and flame-retardant housing
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Lighter weight and smaller footprint, improving portability and installation flexibility
How long does a 12V 400Ah LiFePO4 battery typically last?
These batteries typically last over 10 years under proper use, delivering more than 4000 full charge-discharge cycles at 100% DoD, and up to 15,000 cycles at 60% DoD. Proper charging, avoiding extreme temperatures, and adhering to manufacturer guidelines ensure maximum lifespan.
What safety features are integrated into 12V 400Ah LiFePO4 batteries?
The battery’s 250A BMS safeguards against overcharge, overdischarge, overcurrent, short circuits, and overheating (up to 167℉). It balances cell voltages and monitors temperature in real time. The IP65-rated ABS enclosure provides dust and water resistance, while the flame-retardant material enhances fire safety.
How does the Battery Management System (BMS) protect and optimize the battery?
The BMS continuously monitors individual cell voltages, temperature, and current to prevent unsafe conditions. It balances cells to ensure uniform charging, limits current to safe levels, and disconnects the battery in case of faults. This system extends battery life, improves reliability, and ensures user safety.
What are the charging requirements and typical charging times for these batteries?
The recommended charging voltage is 14.4V ± 0.2V with a constant current of up to 80A (0.2C). Charging times typically range from 3 to 6 hours depending on charger capacity and battery state. The battery supports charging from multiple sources including LiFePO4 chargers, solar panels, generators, and alternators.
What applications are ideal for 12V 400Ah LiFePO4 batteries?
Ideal applications include residential and commercial solar energy storage, RVs, marine vessels, off-grid power systems, backup power for homes and businesses, and heavy-duty electric vehicles. Their high capacity, safety, and maintenance-free nature make them versatile for demanding energy needs.
How do temperature and environmental conditions affect 12V 400Ah LiFePO4 battery performance?
The battery operates efficiently between -20°C and 60°C for discharge and 0°C to 50°C for charging. Extreme cold may temporarily reduce capacity, while excessive heat can accelerate aging if unmanaged. The IP65 rating protects against dust and water, enabling use in harsh environments.
What environmental benefits do 12V 400Ah LiFePO4 batteries offer?
LiFePO4 batteries contain no toxic heavy metals, have higher energy efficiency, and longer lifespans, reducing waste and environmental impact. They are easier to recycle than lead-acid batteries and support sustainable energy solutions by enabling clean, renewable power storage.
How can buyers select a reliable supplier or manufacturer for 12V 400Ah LiFePO4 batteries?
Buyers should look for suppliers with:
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Proven manufacturing expertise and quality assurance
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Comprehensive certifications such as UL, CE, RoHS, UN38.3
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Strong after-sales support and warranty (typically 5 years)
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Transparent product specifications and testing documentation
LiFePO4-Battery-Factory, powered by Redway Power, exemplifies these qualities, offering certified, high-performance 12V 400Ah LiFePO4 batteries with customizable options and global distribution.
12V 400Ah LiFePO4 Battery Specifications Chart
| Specification | Details |
|---|---|
| Nominal Voltage | 12.8 V |
| Capacity | 400 Ah |
| Energy | 5120 Wh |
| Max Continuous Discharge Current | 250 A |
| Max Continuous Charge Current | 250 A |
| Peak Discharge Current (5s) | 500 A |
| Cycle Life | 4000+ cycles (100% DoD) |
| Weight | ~80 lbs (36 kg) |
| Dimensions (L x W x H) | 20.47 x 10.59 x 8.66 inches |
| Protection Rating | IP65 |
| Housing Material | Flame-retardant ABS |
Battery Management System (BMS) Features Chart
| Feature | Description |
|---|---|
| Overcharge Protection | Prevents charging beyond safe voltage |
| Overdischarge Protection | Prevents damaging deep discharge |
| Overcurrent Protection | Limits current to safe levels |
| Short Circuit Protection | Detects and interrupts short circuits |
| Cell Balancing | Maintains uniform cell charge |
| Temperature Monitoring | Prevents overheating and cold charging damage |
Lithium Battery Expert Views
“At LiFePO4-Battery-Factory, we understand that the 12V 400Ah LiFePO4 battery is a cornerstone for modern energy storage, combining high capacity with advanced safety and long life. Our commitment to quality and customization ensures clients receive batteries that reduce downtime and total cost of ownership. Partnering with LiFePO4-Battery-Factory means securing a reliable, high-performance energy solution for diverse applications.” — Senior Engineer, LiFePO4-Battery-Factory
Conclusion
The 12V 400Ah LiFePO4 battery offers a powerful combination of high energy capacity, fast charging, long lifespan, and superior safety, making it ideal for solar, RV, marine, and off-grid applications. Its advantages over lead-acid batteries translate into increased efficiency, reduced maintenance, and lower total cost of ownership. Choosing a certified supplier like LiFePO4-Battery-Factory guarantees quality, performance, and peace of mind.
FAQs
Can 12V 400Ah LiFePO4 batteries be connected in series or parallel?
Yes, they can be configured to increase voltage or capacity, but must follow manufacturer guidelines to ensure safety.
How long does it take to fully charge a 12V 400Ah LiFePO4 battery?
Typically, charging takes 3 to 6 hours depending on charger current and battery condition.
Are these batteries safe for outdoor use?
Yes, with IP65 rating and flame-retardant housing, they are suitable for outdoor and harsh environments.
What warranty is typical for these batteries?
Most suppliers, including LiFePO4-Battery-Factory, offer warranties of 5 years or more.
Can these batteries operate in cold climates?
Yes, but charging below 0°C is generally not recommended without special precautions.
