12V 400Ah Lifepo4 Lithium battery Bluetooth 5.12kwh For Solar
The Delong 12V 400Ah lithium battery utilizes advanced lithium iron phosphate technology and is equipped with an intelligent BMS for comprehensive protection. With a capacity of 5120Wh, this battery is suitable for deep cycle applications such as RVs, solar systems, and off-grid systems.
- Brand: Delong Energy
- Sample: Available For Test
- Service: 10 Years Warranty
- Support: OEM, ODM, OBM, Customized
- Certificates: CE, UL, MSDS, IEC, UN38.3, ISO, etc.
Price: Click The Button Below To Get A Discount Price.
12.8V 400Ah Lifepo4 Solar Battery W Bluetooth Provides Stable Energy Delong
The Delong 12V 400Ah lithium iron phosphate battery pack has a nominal voltage of 12.8V and can be equipped with an LED display, Bluetooth functionality, and low-temperature heating. It serves as a backup power source and uninterruptible power supply (UPS) for residential areas, commercial zones, and outdoor activities.
12.8V 300Ah LiFePO4 Battery Advantage
Grade A Battery Cells
The quality of the Delong 12V 400Ah lithium battery is widely recognized by customers. This is due to our use of Grade A lithium iron phosphate cells from well-known brands. Their high consistency has passed rigorous safety tests, and they maintain a stable voltage throughout the discharge process, demonstrating outstanding performance.
Lifespan, Size, Weight
Lithium iron phosphate cells not only have a high energy density but also a high usable capacity. They can store more energy in a smaller size and weight, while extending the power supply time for devices. The Delong 400 amp hour lithium ion battery has a lifespan of up to 12 years, positively contributing to the efficiency of your equipment and the benefits of your projects.
Intelligent BMS and Certifications
The chemical properties of the 400Ah lithium iron phosphate cells are very stable, allowing them to operate over a wide temperature range. The added 250A intelligent BMS enhances multiple protective functions. In the event of overcharging, over-discharging, overheating, or short circuits, the BMS will automatically disconnect the circuit and restore the connection when conditions are safe.
BMS Function
Our battery packs have passed industry quality tests and hold international certifications such as CE, IEC, KC, UL, MSDS, and UN38.3, thanks to the high quality of our products.
IP65 Waterproof Housing
The battery housing has an IP65 level waterproof capability. It combines ABS and PC materials, enhancing overall strength and toughness to withstand certain external impacts. We can design the shape of the housing based on the specific application requirements to ensure reliable power supply. Additionally, the Delong 12V 400ah lithium battery can also be equipped with a metal housing, further improving protection and durability. However, the metal housing is heavier than the plastic one.
Series and Parallel Connection
When you need a higher voltage output, you can connect multiple 12V 400Ah batteries in series using cables to achieve 24V, 36V, or 48V. Similarly, when you require a longer runtime, you can connect them in parallel to obtain a higher capacity. The series and parallel connection options for Delong lithium batteries are highly flexible, allowing you to DIY connections based on changing practical needs. The 400Ah lithium battery is an ideal choice for RVs, electric boats, yachts, and home backup energy.
12V lifepo4 Battery Application
Charging Methods and Efficiency
The Delong 12V 400Ah deep cycle battery is easy to install and offers high charging efficiency. To extend the battery’s lifespan, we recommend setting the charging current between 40A to 80A, allowing the battery to reach 100% charge in just 5 hours. You can choose to charge it using a lifepo4 charger, a solar panel with MPPT, or an AC to DC charger.
Related article: Can You Charge The Lithium Battery With Lead Acid Charger?
12.8V 300Ah LiFePO4 Battery Charging Methods
10-Year Warranty
The Delong 400Ah rechargeable battery offers 6,500 cycles and a 10-year after-sales warranty. With its reliable quality and excellent performance, it has received full series certification. It can be sold and shipped to Europe, America, Asia, Africa, and Oceania. Feel free to contact us for shipment pricing, including deliveries to the United States, Germany, the United Kingdom, Pakistan, and India from China or overseas warehouses.
Custom Services, OEM/ODM
As a Chinese lithium battery manufacturer, we offer power solutions at the best factory prices, along with OEM, ODM, bulk, and wholesale services. You can customize the voltage, current, operating temperature, BMS, housing, Bluetooth, and self-heating features based on local power requirements. Our experienced engineers can provide practical advice and help you achieve your final requirements.
12V lifepo4 Battery Series
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Technical Data
| Model | DL-LFP-RP12400 |
| Product Specification | 12V 400Ah |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 400Ah |
| Battery Energy | 5120Wh |
| Max Charge Current | 80A |
| Charging Cut-off Voltage | 14.6V ± 0.2V |
| Max Discharge Current | 200A |
| Discharging Cut-off Voltage | 9.2V ± 0.2V |
| Cell Type | Prismatic LiFePO4 Battery |
| Display | LCD (Optional) |
| Terminal | M8 |
| Case Material | ABS+PC |
| Waterproof Level | IP65 |
| Charge Temperature Range | 0~50℃ |
| Discharge Temperature Range | -5℃~55℃ |
| Cycle Life | ≥6500 Cycles |
| Designed Life | 12 Years |
| Colour | Black |
| Weight | 36.5Kg |
| Dimensions (LxWxH) | 522*267*218mm |
| Assembly Method | Built In |
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FAQ
1. How Long Will A 400ah Lithium Battery Last?
The Delong 400Ah li ion battery can be used for 12 years and complete 6,500 cycles. Its runtime varies based on voltage, device power, usage environment, and habits. Contact us to confirm how long the 400Ah battery can serve your project.
2. How Many Watts Is 400ah Battery?
The wattage of the 400Ah battery pack varies with the voltage. For example, the Delong 12.8V 400Ah battery has 5,120 watts, while the 24V 400Ah battery has 9,600 watts.
3. How Many Kwh Is In A 12v 400ah Battery?
The capacity of a 12V 400ah battery is 4.8kwh.
12V * 400ah = 4800wh
4800wh / 1000 = 4.8kwh
4. How Many Solar Panels Can Charge A 400ah Battery?
When charging the battery with solar panels, factors such as battery voltage, charging efficiency, solar panel power, and sunlight conditions must be considered.
The capacity of the Delong 12V 400Ah lithium battery is known to be 4,800Wh:
12V * 400Ah = 4,800Wh
Assuming a charging efficiency of 90%, the actual energy required is:
4,800Wh ÷ 90% = 5,333Wh
Assuming the solar panel power is 300W and the effective sunlight duration is 5 hours, the energy produced by each solar panel per day is:
300W * 5h = 1,500Wh
The number of solar panels needed is:
5,333Wh ÷ 1,500Wh ≈ 3.56 panels
Therefore, we need 4 300W solar panels to charge the 12V 400Ah lithium battery.
5. What Size Inverter For 400Ah Battery?
The rated power of the inverter is typically 20% to 30% higher than the load requirements to ensure stable operation.
Assuming you are using the Delong 12V 400Ah lifepo4 battery with a total load power of 2,000W, we recommend choosing an inverter with a rated power between 2,500W and 3,000W.
For more precise inverter power specifications, please contact Delong.
6. What Size Charger Do I Need For A 400ah Battery?
Generally, the output current of a charger should be between 10% and 20% of the battery capacity. The higher the output current, the faster the charging speed. For a 400Ah battery, the output current should be between 40A and 80A.
400Ah × 10% = 40A
400Ah × 20% = 80A
If it is a 12V 400Ah lithium battery, you can choose a dedicated charger with a voltage of 12V and an output current between 40A and 80A.
7. How Long Does It Take To Charge A 400ah Battery?
Assuming the output current of the charger is 80A and the charging efficiency is 90%, according to the formula:
Charging Time (h) = Battery Capacity (Ah) ÷ Charger Output Current (A)
400Ah ÷ 80A = 5h
5h ÷ 90% = 5.6h
You will need 5.6 hours to fully charge the 400Ah battery. If the charging current changes, the charging time will also change.
8. What Is The Maximum Charging Current For A 400ah Battery?
The maximum charging current of a battery depends on its design and the manufacturer’s recommendations. The maximum charging current for the Delong 12.8V 400Ah lifepo4 battery is 80A, which helps extend the battery’s lifespan.
9. How Much Does A 12v 400ah Battery Weigh?
The weight of the Delong 12V 400Ah lifepo4 battery is around 40kg. In comparison, a lead-acid battery of the same capacity weighs between 100kg and 120kg.
10. What Can 400ah Batteries Run?
The higher the voltage of a 400Ah battery, the greater the output power, allowing it to run devices with higher power requirements.
It can be used as backup power or an uninterruptible power supply for household appliances, outdoor activities, RVs, medical equipment, and communication devices, as well as to power electric tools, electric vehicles, and industrial equipment.
11. How Long Will A 400ah Battery Run An Air Conditioner?
5120wh ÷ 1500w ≈ 3.4h
3.4h * 95% ≈ 3.2h
The runtime of a 400Ah battery bank is related to the voltage and the power of the air conditioner.
The Delong 12.8V 400Ah solar battery has a capacity of 5,120Wh and a discharge efficiency of 95%. Assuming the power of the air conditioner is 1,500W, it can run the air conditioner for approximately 3.2 hours.
5,120Wh ÷ 1,500W ≈ 3.4h
3.4h * 95% ≈ 3.2h
12. How Long Will A 400ah Battery Run A Fridge?
The Delong 12.8V 400Ah rechargeable battery has a capacity of 5,120Wh and a discharge efficiency of 95%. Assuming the power of the refrigerator is 300W, the 12.8V 400Ah battery can run the refrigerator for approximately 16 hours.
5,120Wh ÷ 300W ≈ 17h
17h * 95% ≈ 16.2h
13. Is a 400ah Battery Enough For an RV?
This is also related to the battery’s voltage and the total power consumption of the devices.
Taking the Delong 12.8V 400Ah lithium battery as an example, it has a capacity of 5.12 kWh. The 400Ah battery bank can only support the operation of the RV when the total power consumption within the RV is less than 5.12 kWh.
14. What Is The Difference Between A 12v 400ah Vs 24v 200ah Battery?
Both the 12V 400Ah battery and the 24V 200Ah battery have a power output of 2,400W. However, they are not exactly the same.
Voltage: The output voltage of the 24V 200Ah battery is higher than that of the 12V 400Ah battery.
Output Current: The output current of the 24V 200Ah battery is lower than that of the 12V 400Ah battery.
I = P ÷ V
For 24V: 2,400W ÷ 24V = 100A
For 12V: 2,400W ÷ 12V = 200A
Applications:
12V: Used for cars, RVs, solar energy storage, home lighting, etc.
24V: Suitable for higher power systems, such as large solar power generation systems or commercial electric vehicles.
System Design: The 24V battery can reduce the number of batteries needed in series, resulting in higher energy efficiency and more flexible configurations.
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