16.07kWh–32.15kWh All-in-One Energy Storage System | 6.5kW
Designed for residential and small commercial off-grid and backup power applications, this series combines a 6.5kW hybrid off-grid inverter with 51.2V 314Ah LiFePO4 battery modules in a modular stacked design. With simplified module connections and less complex wiring, the system is available in 16.07kWh single-module and 32.15kWh dual-module configurations, making on-site installation easier while leaving room for future capacity expansion.
- 51.2V 100Ah Stackable All-in-one ESS
- 51.2V 100Ah Stackable and Wall Mounted All-in-one ESS
- 51.2V 200Ah Stackable All-in-one ESS (EU Stock)
- 51.2V 228Ah Stackable and Wall Mounted All-in-one ESS (EU Stock)
- 51.2V 300Ah Stackable All-in-one ESS (EU Stock)
- 51.2V 314Ah Stackable All-in-one ESS (EU Stock)
- 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.
Features of 16.07-32.15kWh All-in-One Energy Storage System
Grade-A LiFePO4 Cells with Intelligent Battery Management
The battery pack uses brand-new Grade-A 314Ah LiFePO4 cells with a cycle life exceeding 6,500 cycles for long-term power stability. The built-in smart BMS monitors cell voltage, current, and temperature in real time to protect against overcharging, over-discharging, and short circuits. A front-mounted 4.3-inch touchscreen enables installers and technicians to inspect operational metrics without external diagnostic tools.

Compact Design with Flexible Installation Options
To accommodate different installation spaces, the 16.07–32.15kWh system supports both floor-stacked and wall-mounted installation. With a depth of only 260mm, it helps reduce the space required for installation. Rated IP21, it is suitable for dry, well-ventilated indoor environments.
• Single module (16.07kWh): 483 × 260 × 1070mm, approx. 136.5kg
• Dual module (32.15kWh): 483 × 260 × 1685mm, approx. 254.5kg

High-Current Output and Surge Power Support
The battery module delivers up to 200A of continuous discharge current and can provide 205A for up to 5 seconds. The recommended charge and discharge currents are 40A and 100A, respectively.
Combined with the inverter’s 10kVA surge power, the 16.07–32.15kWh system can handle everyday loads as well as appliances with higher starting currents, such as air conditioners, water pumps, and small motors.

10ms Backup Switching and Dual AC Outputs
The integrated 6.5kW inverter supports up to 6500W of PV input with an MPPT operating range of 60–450VDC and provides dual AC outputs. During a grid outage, the all in one system switches to backup power in approximately 10ms in UPS mode and delivers pure sine wave AC output. Dual AC outputs make it easier to separate critical loads from higher-power appliances and manage backup power more effectively.
Multiple Power Inputs and Remote Monitoring
Beyond solar PV, the 16.07–32.15kWh all in one system accepts utility grid or diesel generator power to handle changing supply conditions. The inverter features a 3.5-inch LCD screen alongside RS232, RS485, and CAN interfaces. With the optional Wi-Fi module, users and service teams can monitor solar generation, load usage, and battery SoC via mobile app or web browser.

Technical Specifications
| Configuration | Battery Specification | Total Capacity | Inverter Output | Recommended Applications |
|---|---|---|---|---|
| LFP51314S × 1 | 51.2V 314Ah | 16.07kWh | 6.5kW | Residential solar self-consumption and general backup power |
| LFP51314S × 2 | 51.2V 314Ah | 32.15kWh | 6.5kW | High-consumption homes, off-grid farms, and small commercial backup |
Certifications and Factory Services
• Certifications: The system has passed relevant CE, KC, UN38.3, and IEC 62619 certification and testing requirements. Supporting documentation can be provided for transportation, customs clearance, and project review.
• 10-Year Warranty: The complete system comes with a 10-year warranty and after-sales technical support, giving you continued assistance after project delivery.
• OEM/ODM Services: We provide customization services for brands, distributors, installers, and system integrators, including branding, enclosure colors, communication protocols, and system configurations. You can select the configuration that best fits your target market and project requirements, and our team can also help determine the right system based on load power and required backup time.

Delong Energy Lithium Battery Supplier
Technical Data
| Battery Specifications | |||
|---|---|---|---|
| Model | LFP51314S | ||
| Nominal Voltage | 51.2V | ||
| Nominal Capacity | 314Ah | ||
| Battery Energy | 16.07kWh | ||
| Charging Current | Recommend/40A; Max./100A | ||
| Discharging Current | Recommend/100A; Max./200A; Peak/205A(5 sec.) |
||
| Discharging Cut-off Voltage | 57.6V±0.2V | ||
| Charging Cut-off Voltage | 44.8V±0.2V | ||
| HMI Interface | 4.3-inch Touch Display Screen | ||
| Inverter Specifications | |||
| Model | DL48-S6.5 | ||
| AC Input | |||
| Rated Input Voltage (VAC) | 208 / 220 / 230 / 240; L + N + PE | ||
| Voltage Range (VAC) | 90~280±3 (normal mode);
170~280±3 (UPS mode) |
||
| Frequency (Hz) | 50Hz/60Hz (Auto detection) | ||
| AC Output | |||
| Rated Capacity (kW) | 6.5 | ||
| Surge Power (kVA) | 10 | ||
| Voltage (VAC) | 208 / 220 / 230 240 | ||
| Power Factor (PF) | 1 | ||
| Frequency | 50/60Hz±0.1% | ||
| Switch Time (ms) | 10 (normal mode) / 10 (UPS mode) | ||
| Wave Form | Pure Sine Wave | ||
| Overload Capacity (Battery Model) | 1min@102%~110% load;
10s@ > 110% load |
||
| Max. Efficiency (Battery Mode) | 93%@48VDC | ||
| Charger (PV / AC) | |||
| Solar Charger Type | MPPT | ||
| Max PV Input Current / Input Power | 27A / 6500W | ||
| Max PV Open Circuit Voltage (VDC) | 500 | ||
| Max PV Charge Current (A) | 100 | ||
| Max AC Charge Current (A) | 100 | ||
| Interface | |||
| HMI Interface | 3.5 inch LCD | ||
| Interface | RS232/RS485/CAN | ||
| Monitoring | WiFi (optional/external) | ||
| All-in-one Machine Specifications | |||
| Item | 16.07kWh + 6.5kW | 32.14kWh+6.5kW | |
| Battery Module Model*Number | LFP51314S * 1 | LFP51314S*2 | |
| Energy(kWh) | 16.07 | 32.15 | |
| Overall size(mm) | 483*260*1070 | 483*260*1685 | |
| Overall Weight(Kg) | ≈136.5 | ≈254.4 | |
| General Specifications | |||
| Ingress Protection | IP21 | ||
| Operating Temperature | 0℃to 55℃,>45℃ drop runs | ||
| Relative Humidity | 5% to 90% (Non-Condensing) | ||
| Storage Temperature | -10℃~55℃ | ||
| Max.Operating Altitude | 4000m(Derating above 1000m) |
FAQ
1. Is Delong Energy a lithium battery factory?
Delong Energy is a battery factory with 11 years of experience, which integrates research, development, production, and sales.
2. How about the quality of lithium battery products from Delong Energy?
Delong Energy has a strong R&D team and a set of international certifications, including MSDS, UN38.3, FCC, IEC62133, CE, UL, KC, BIS, CB, ROHS, and ISO9001:2015 certified.
3. Can you do An OEM/ODM project?
We have engineers who can help you design and R&D any related products.
4. Can you customize the battery pack for more function?
Yes, we have a professional engineering team to provide an excellent solution for you.
5. Do you have MOQ?
No limited.
6. Can I have samples to test? And what is the lead time for a sample order?
Yes, we can supply samples. The lead time for samples is 3-5 days. The buyer pays for the sample cost and shipping cost.
7. What is your term of payment?
We adopt T/T, Paypal, Alibaba payment way, Credit Card, Visa, Echecking, Master Card, Trade Assurance, etc.
8. Do you provide after-sales service?
Yes, the battery warranty is 10 years. If there are any quality problems on our side in this period, we can send a new one as a replacement.







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