40kwh Lithium Battery Storage For Home, Solar Use
The 40kWh lithium battery is designed based on a standard 19-inch size. It is made up of four 10kWh modules connected in parallel. Each module has a 200A smart BMS protection board. It supports 6,500 charge and discharge cycles, providing you with safe, efficient, and long-lasting power.
- 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.
Delong 40kwh Lithium Ion Battery Bank, Rack-mounted, Safe & Flexible
The Delong 40 kWh lithium battery has a discharge depth of 95%, which helps it maintain a high capacity even after long-term use. The LED screen on the module shows the current status of the battery. The on/off button makes it easy for you to manage the battery. So how does the 40 kWh optimize your energy loss?
When there is plenty of sunlight, the battery stores extra solar energy. At night or on cloudy days, it provides power to keep your devices running. You can make full use of peak and off-peak electricity prices, balance power supply and demand, and reduce pressure on the grid.
In areas with an unstable power grid, the 40kWh battery helps you use electricity more independently. In places with high electricity costs, this system helps you save more on your bills. Whether for homes, businesses, industries, off-grid, or grid-connected use, it is a good choice.
Rack mounted lithium Battery
Features of 40kwh Lithium Battery
- Rack-mounted Design: The rack or cabinet design makes the battery system more stable. It is especially suitable for data centers, microgrids, and other places with high power demand.
- Grade A Battery Cells: The 40kWh battery uses brand-new A-grade cells from a well-known brand. They have better energy density, safety, lifespan, consistency, and discharge performance than regular cells.
- Small Size, Light Weight: These cells use advanced lithium iron phosphate technology, making the battery pack compact. The stacked design saves even more space.
- BMS Dual Active Protection: The 200A smart BMS provides dual active protection. It automatically manages charging and discharging, balances cell voltage, and prevents overcharging, over-discharging, and extreme temperatures.
- Long Lifespan: A-grade cells support more charge cycles. The smart BMS provides full protection, helping extend the battery pack’s lifespan.
- Expandable Capacity: The rack-mounted design allows you to easily expand the battery capacity from 10 kWh, 20 kWh, 30 kWh, 40 kWh to 50 kWh. A flexible battery system offers better value and meets your daily needs.
- Strong Compatibility With Inverters: The battery communicates with inverters and MPPT controllers through RS485 and CAN interfaces. It works with 99% of brands like Sungrow, Goodwe, Sofar, Sermatec, Growatt, Voltronic, Victron, SMA, Deye, SAJ, MUST, TBB, MEGAREVO, and Livoltek.
Compatible Inverter List
- Eco-friendly & Certified Product: It contains no heavy metals or acids and does not pollute the environment. It has passed strict quality tests and received many international certifications, such as CE, IEC, KC, PSE, FCC, RCM, UL, MSDS, UN38.3, SGS, ROHS, and ISO9001. Therefore, it is a product worth using and promoting in more countries. We welcome you to become our distributor or wholesaler and offer great prices for this.
Lithium Battery Certification
- Low Self-discharge Rate: It has no memory effect and can still be used after being idle for 6 months. Of course, it should be charged every 6 months to maintain the SOC above 90%.
- Wide Range of Applications: The 40kWh lifepo4 battery, when combined with solar panels and inverters, forms a perfect solution for grid-connected, hybrid, and off-grid systems. This solution can replace environmentally harmful components like lead-acid batteries and diesel generators. With a wide temperature range of -10℃ to 50℃, it provides stable power output for various scenarios, such as residentials, businesses, telecom bases, construction sites, data centers, city grids, wind power, and military equipment. As an uninterruptible power supply, the 40kWh battery helps reduce losses from power grid failures, improve operational efficiency, and increase long-term profits.
Rack mounted lithium Battery
- 10-year Warranty: Delong provides a 10-year after-sales warranty for the 40kWh battery, so you can use it with confidence.
Comparing 40kwh Solar Batteries
Delong’s 40kWh battery comes in cabinet, stackable, and high-voltage models. We can also adjust and customize it to meet your needs. Contact us for a cost-effective energy storage solution.
| Model | BE51200 | HS51200 | HV32-10 | HVS16-5 |
|---|---|---|---|---|
| Picture |  |
 |
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| Energy | 51.2V 800Ah | 51.2V 800Ah | 409.6V 100Ah | 409.6V 100Ah |
| Weight | 332kg | 340kg | 542kg | 440kg |
| Size | 482/438*540*120mm | 690*590*740/870mm | 780*520*920mm | 720*330*1640mm |
Why Choose Delong 40kwh Home Battery?
R&D Team – Develops new products, upgrades existing ones, and provides customized energy solutions.
Manufacturing Factory – Produces high-quality batteries with strict testing and delivers on time.
Sales Team – Offers excellent service to meet customer needs.
After-Sales Team – Solves customer issues and ensures long-term benefits from lithium batteries.
Rack Mount Solar Battery
Our Customer Cases
Technical Data
| Model | 40 kWh Battery (BE51200 Series) |
|---|---|
| Nominal Voltage | 51.2V / 48V |
| Nominal Capacity | 200Ah (Single Module) |
| Battery Energy | 40.96Kwh |
| Weight | ≈332Kg |
| Dimensions (L*W*H) | 482/438*540*960mm |
| Discharging Cut-off Voltage | 44.8V±0.2V |
| Charging Cut-off Voltage | 57.6V±02V |
| Charging Current | Recommend/40A; Max./100A |
| Discharging Current | Recommend /100A; Max./200A* |
| Peak Discharging Current | 205A (5 sec.)* |
| Nos of Cells | 16pcs (16S1P Single battery module) |
| Cell Type | LiFePO4 Battery |
| Terminal | M8 |
| Case Material | Metal Box |
| Communication Mode | RS485 / CAN |
| Depth of Discharge | 95 |
| Working Temperature | 0°C-50℃ Charge / -10℃~50℃ Discharge |
| The Shelf Temperature | -20℃-60℃ |
| Humidity | 5-95%(RH) |
| Design Life Cycle | 10+Years (25℃/77°F) |
| Cycle Life | ≥6500 at 25℃ |
| Assembly Method | Rack / Cabinet |
PDF Download
Datasheet:
5Kwh~15Kwh Rack Mounted Lithium Battery Datasheet 2024
User Manual:
User Manual – 5~50Kwh Rack Mounted Series
FAQ
What Does 40 Kwh Battery Mean?
A 40kWh battery means it can store 40 kilowatt-hours of energy. It can run a 1kW device for 40 hours or a 40kW device for 1 hour.
What Is the Price of a 40kw Battery?
A 40kW lead-acid battery costs around $3,500. It has a lower energy density and a shorter lifespan.
A 40kW LiFePO4 battery pack costs between $4,800 and $24,000. It has a higher energy density and lasts longer.
How Big Is a 40 kWh Battery?
The size of the Delong 40kWh battery is 482/438*540*960mm.
How Heavy Is a 40kwh Battery?
The weight of the Delong 40kWh battery is 332kg.
How Long Does It Take to Charge a 40 kWh Battery?
If you charge the 40kWh battery with a maximum charging current of 100A, it will take about 2 hours.
How Much Does It Cost to Charge a 40kwh Battery?
If the electricity price is $0.1/kWh and the charging efficiency is 95%, charging a 40kWh battery will cost $4.2.
How Long Does a 40 kWh Battery Last?
The Delong 40kWh battery bank has a lifespan of 10 years. When powering a 5kW device, it can run for 8 hours. The higher the device’s power, the shorter the battery runtime.
How Many Miles Is a 40 kWh Battery?
How many miles a 40kWh battery can run depends on the vehicle type, energy consumption, and driving conditions. If the vehicle’s energy consumption is 3 miles/kWh, the 40kWh battery can run 120 miles.
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