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Contact us at service@better-ess.com to check the stock level of your nearest warehouse.
We stand behind the quality and performance of our products through comprehensive warranty coverage.
All LiFePO4 Cells Batteries can receive a 5-year warranty, when used correctly according to the product manual instructions.
Mobile ESS and DIY Case Kit are also warranted for 5 years.
Battery chargers carry a 2-year warranty.
Accessories are covered by a 1-year warranty.
All warranties are effective from the date of purchase by the end user. Correct installation and usage as specified in the product manual are required to maintain warranty eligibility.
Please take time to carefully review the manual prior to setup and operation to ensure proper use and long-lasting performance from your BetterESS LiFePO4 System. We're here to support you throughout the warranty periods.
We provide lifetime customer support to ensure you enjoy a worry-free experience with our products.
Whether you have questions about installation, usage, or maintenance, our dedicated team is always here to help — anytime you need us.
Contact us (Email): service@better-ess.com
The price shown on the website is the final price.
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📦 Shipping from China
Estimated delivery time: 45–60 working days after shipment
The BetterESS 400V High Voltage LiFePO4 Battery System is a modular energy storage solution designed for residential solar systems, backup power, off-grid applications, and energy cost optimization.
With a stackable and scalable architecture, the system supports flexible energy storage configurations from 24kWh to 64kWh, allowing homeowners to expand their storage capacity as their energy needs grow.
✅ 400V High Voltage System
Designed for efficient power transmission with lower operating current and reduced cable losses.
✅ 24–64kWh Scalable Capacity
Modular stackable design allows flexible system expansion.
✅ Premium LiFePO4 Battery Technology
Safe and reliable lithium iron phosphate chemistry for residential energy storage.
✅ 6000+ Cycle Life
Designed for long-term daily cycling and reliable energy storage.
✅ Intelligent BMS Protection
Monitors battery voltage, current and temperature while providing multiple safety protections.
✅ Multiple Inverter Compatibility
Compatible with a wide range of popular solar and energy storage inverters.
Compared with traditional low-voltage battery systems, the 400V high-voltage architecture can deliver the required power with lower current.
This helps reduce electrical losses and improves overall system efficiency, making it suitable for larger residential energy storage applications.
The system uses high-frequency isolation and natural cooling for reliable operation with a simple thermal management design.
The stackable modular structure makes installation and future expansion more flexible.
The system can be configured from 24kWh up to 64kWh, providing homeowners with the flexibility to choose the appropriate storage capacity for their solar system and energy consumption.
Whether you need additional storage for higher solar self-consumption or greater backup capacity, the modular design allows the system to grow with your energy requirements.
24kWh → 32kWh → 40kWh → 48kWh → 56kWh → 64kWh
Actual available configurations may depend on the inverter and system architecture.
Built with LiFePO4 battery technology, the system provides excellent safety, stability and long-term cycling performance.
With a rated cycle life of 6000+ cycles, it is designed for frequent daily charging and discharging in residential energy storage applications.
Benefits of LiFePO4:
The integrated BMS continuously monitors the battery system and provides multiple protection functions.
The BMS is designed to help maintain safe and reliable battery operation under different working conditions.
Store excess solar energy generated during the day and use it later when solar production is low, helping increase solar self-consumption.
Provide stored energy for essential household loads during power interruptions.
Suitable for off-grid homes, remote properties, cabins and other applications where reliable energy storage is required.
Store electricity when energy costs are lower and use stored energy during higher-cost periods, depending on your local electricity tariff and system configuration.
The high-voltage architecture allows the same power output to be achieved with lower current compared with low-voltage battery systems.
Lower current can help reduce cable losses and improve overall energy transmission efficiency.
Stackable battery modules make it easier to configure the system according to different household energy requirements.
LiFePO4 chemistry combined with intelligent BMS protection provides a stable and reliable energy storage solution.
| Parameter | Specification |
|---|---|
| Model | 3P-HV-DC400V-1P8S-314 |
| Rated Power | 4200W |
| High Voltage Side – Working Voltage | 350–450VDC |
| High Voltage Side – Rated Voltage | 400VDC |
| High Voltage Side – Max. Continuous Output Power | 4200W |
| Battery Type | LiFePO4 / LFP |
| Number of Battery Strings | 8 |
| Battery Capacity | 314Ah |
| Rated Voltage | 25.6VDC |
| Minimum Full-Load Voltage | 22.4VDC |
| Maximum Full-Load Voltage | 28.8VDC |
| Working Voltage | 20–30VDC |
| Battery Size | 610 × 250 × 390 mm |
| BCMU Voltage Detection Channels | 8 |
| BCMU Temperature Detection Channels | 8 |
| Battery Current Detection | -375A to +375A, ≤±1% |
| Safety & EMC Standards | IEC60730, IEC62477, IEC61000-6-1/3 |
| Max. Number of Parallel Units | 16 |
| Switching Time | 6ms |
| Operating Modes | Charging / Discharging / Standby / Shutdown / Maintenance |
| Isolation Method | High-Frequency Isolation |
| Cooling Method | Natural Cooling |
| Protection Functions | Over-temperature, Over-current, Short-circuit, Over-charge, Over-discharge, Cell Over-voltage |
| Protection Grade | Can achieve IP65 or higher when integrated with the complete system |
| Operating Temperature | -20°C to 50°C, no derating |
| Storage Temperature | -40°C to 70°C |
| Relative Humidity | 5%–95%, no condensation |
| Operating Altitude | Max. 4000m; derating above 2000m |
| Communication Interfaces | CAN / RS232 / RS485 |
The BetterESS high-voltage battery system can be used with a wide range of popular inverter and energy storage brands.
Compatible brands include:
Please contact us before ordering to confirm compatibility with your specific inverter model.
BetterESS provides battery cells, battery packs, DIY battery solutions and complete energy storage systems with factory-direct supply.
From individual battery modules to larger residential energy storage systems, we can provide different configurations according to your application.
Our technical team can help confirm battery specifications, inverter compatibility and system configuration before purchase.
We provide international shipping solutions for customers in different regions.
1. Inverter Compatibility
Please provide your inverter brand and exact model before ordering so we can confirm compatibility.
2. System Configuration
The final battery capacity and configuration may vary depending on the inverter, battery modules and installation requirements.
3. Installation
High-voltage battery systems must be installed and commissioned by qualified professionals according to local electrical regulations and safety requirements.
4. Shipping Time
This product is shipped from China. Estimated delivery time is 45–60 working days after shipment.
5. Price
The displayed price includes shipping, customs duties and applicable taxes according to the selected delivery destination. No additional import fees are expected under the stated shipping terms.
| Specification | Details |
|---|---|
| System Voltage | 400V |
| Energy Capacity Range | 8kWh – 64kWh |
| Grid Connection | On-Grid / Grid-Tied |
| Battery Type | Lithium-ion (LiFePO4) |
| Battery Cell | 314Ah |
| System Type | Stackable Modular System |
| Compatible Inverters | Deye / Growatt / GoodWe / Solis / Victron / SMA / Sungrow |
| Brand | BetterESS |
| Model | 314Ah High Voltage Battery System |
| Communication Interface | CAN / RS485 / WiFi |
| Protection Level | IP55 |
| Dimensions (L × W × H) | 700 × 360 × 1187 mm |
| Weight | 288 kg (24kWh system) |
| Installation Type | Split / Modular Installation |
| Place of Origin | Guangdong, China |
This high voltage battery system is compatible with many hybrid solar inverters supporting HV battery systems.
Yes. The stackable modular design allows easy capacity expansion up to 64kWh.
Yes, it can be used for off-grid solar energy storage systems.
The battery offers more than 6000 cycles at 80% depth of discharge.
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