Description
The 12.8V 250Ah LiFePO4 battery offers a powerful energy solution with a nominal energy capacity of 3200Wh, making it ideal for high-demand applications. It supports a maximum continuous charge and discharge current of 200A, ensuring efficient and reliable power delivery. The battery is designed with an IP65-rated ABS shell, providing dust and water resistance for versatile installation environments.
Measuring 522 x 240 x 218 mm and weighing 21 kg, this battery balances high capacity with manageable size and weight. It features an advanced JBD/DALY Battery Management System (BMS) that protects against overcharge, over-discharge, short circuits, and temperature extremes. Optional upgrades include Bluetooth, GPS, self-heating, and active balancing, enhancing monitoring and performance.
With a cycle life exceeding 5000 cycles at 80% depth of discharge and a design life of 10 years, this battery guarantees long-term durability. It operates safely between -20°C and 65°C and supports up to 6 parallel connections for scalable power needs. Certified to UL 1642, IEC 62619, CE, UN38.3, and MSDS standards, it comes with a 3-year warranty and OEM options for customized solutions.
A 12V 250Ah lithium battery delivers reliable, long-lasting power through advanced lithium iron phosphate (LiFePO4) chemistry combined with a sophisticated battery management system (BMS). It offers high energy density, over 5,000 charge cycles at 80% depth of discharge, and robust safety features, making it ideal for residential, commercial, and industrial energy storage applications.
What is a 12V 250Ah Lithium Battery and How Does It Work?
A 12V 250Ah lithium battery is a rechargeable battery pack typically built with LiFePO4 cells, providing a nominal voltage of 12.8V and a capacity of 250 amp-hours. It stores electrical energy chemically and releases it through controlled lithium-ion movement between electrodes during charge and discharge cycles, maintaining stable voltage and high current output.
What Are the Key Specifications of a 12V 250Ah Lithium Battery?
Key specifications include:
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Nominal Voltage: 12.8V
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Capacity: 250Ah
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Energy: Approximately 3,200Wh
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Maximum Continuous Discharge Current: 180A
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Peak Discharge Current: Up to 700A (short bursts)
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Charge Voltage: 14.6V
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Discharge Cut-off Voltage: 10V
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Cycle Life: ≥5,000 cycles at 80% depth of discharge
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Weight: Around 27.8 kg
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Dimensions: Approx. 500 x 239 x 217 mm
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Protection: Overcharge, over-discharge, overcurrent, short circuit, temperature, and cell balancing via BMS
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Enclosure: Waterproof ABS case with IP65 rating
How Long is the Cycle Life of a 12V 250Ah Lithium Battery?
These batteries typically exceed 5,000 full charge-discharge cycles at 80% depth of discharge, translating to 10+ years of reliable operation under normal usage and proper maintenance.
What Applications Are Best Suited for a 12V 250Ah Lithium Battery?
Common applications include:
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Solar energy storage systems
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Off-grid and backup power supplies
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Recreational vehicles (RVs) and marine power systems
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Electric vehicles and golf carts
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Industrial equipment and UPS systems
Their high capacity and durability make them versatile across residential, commercial, and industrial sectors.
How Does the Battery Management System (BMS) Protect a 12V 250Ah Lithium Battery?
The BMS monitors voltage, current, temperature, and state of charge to prevent overcharging, deep discharging, overheating, and short circuits. It balances individual cells to maintain uniform voltage levels, optimizing battery capacity and extending lifespan.
What Are the Safety Features of a 12V 250Ah Lithium Battery?
Safety features include:
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Thermal stability of LiFePO4 chemistry
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Integrated BMS protections
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Robust casing and waterproofing (IP65)
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Short circuit and overcurrent protection
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Automatic recovery after fault conditions
These features minimize risks of fire, explosion, and mechanical damage.
How Should You Charge and Maintain a 12V 250Ah Lithium Battery?
Charging should use a CC/CV profile with a maximum charge voltage of 14.6V and float voltage around 13.6-13.8V. Maintenance involves avoiding deep discharges below 10V, storing batteries at partial charge if unused, and keeping them within recommended temperature ranges (0°C to 45°C) to preserve capacity and lifespan.
How Does Temperature Affect the Performance and Lifespan of a 12V 250Ah Lithium Battery?
Extreme temperatures reduce performance and accelerate degradation. Low temperatures increase internal resistance, reducing available capacity, while high temperatures speed up chemical aging. Optimal performance and longevity occur between 0°C and 45°C.
What Are the Advantages of LiFePO4 Chemistry in 12V 250Ah Batteries?
LiFePO4 chemistry offers:
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Superior thermal and chemical stability
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Longer cycle life compared to other lithium chemistries
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Enhanced safety with low risk of thermal runaway
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Environmentally friendly materials
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High power output and consistent voltage
These advantages make it the preferred choice for high-capacity energy storage.
How Does a 12V 250Ah Lithium Battery Compare to Lead-Acid Batteries?
Compared to lead-acid batteries, 12V 250Ah lithium batteries provide:
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Up to 5-10 times longer cycle life
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Higher usable capacity (up to 80-90% depth of discharge)
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Lighter weight (about 40% of lead-acid)
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Faster charging times
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Lower maintenance requirements
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Enhanced safety and environmental benefits
Chart: Cycle Life and Weight Comparison of 12V 250Ah Lithium vs Lead-Acid Batteries
| Feature | 12V 250Ah Lithium Battery | 12V 250Ah Lead-Acid Battery |
|---|---|---|
| Cycle Life | ≥5,000 cycles | 300-500 cycles |
| Usable Capacity | 80-90% | 50% |
| Weight | ~27.8 kg | ~70-80 kg |
| Maintenance | Low | High |
| Charge Time | Faster | Slower |
Chart: Recommended Operating Temperature Range for 12V 250Ah Lithium Battery
| Temperature Range (°C) | Performance Impact |
|---|---|
| Below 0 | Reduced capacity |
| 0 to 45 | Optimal performance |
| Above 45 | Accelerated aging risk |
