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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.
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The BetterESS 51.2V 400Ah 20KWh LiFePO4 Battery is designed for reliable home energy storage, backup power and solar energy applications. With a large 20KWh usable battery capacity, an IP65-rated enclosure, active cell balancing and WiFi monitoring, it provides a practical energy storage solution for both indoor and sheltered outdoor installations.
Built with LiFePO4 battery cells, the system offers excellent cycle life, high safety and stable performance for long-term energy storage.
🔋 20KWh Large Energy Capacity
With a nominal voltage of 51.2V and a capacity of 400Ah, this battery provides approximately 20.48KWh of nominal energy capacity, making it suitable for daily energy storage and backup power applications.
⚖️ Active Cell Balancing
The integrated active balancing function helps maintain better voltage consistency between battery cells, supporting stable battery operation and improving overall pack performance.
📶 WiFi Monitoring
The built-in WiFi function allows users to monitor important battery information remotely through the supported monitoring system, making it easier to check battery status and operating conditions.
🛡️ IP65 Protection
The IP65-rated enclosure provides protection against dust and water jets, making the battery suitable for sheltered outdoor installation as well as indoor energy storage applications.
🔥 Built-in Fire Extinguisher
The battery is equipped with a built-in fire suppression/extinguishing device as an additional safety feature, providing an extra layer of protection inside the battery enclosure.
🔋 LiFePO4 Battery Technology
LiFePO4 chemistry offers excellent thermal stability, long service life and reliable performance, making it well suited for residential energy storage applications.
The BetterESS 20KWh battery can be used for a variety of energy storage scenarios, including:
Solar energy storage
Home backup power
Off-grid energy systems
Daily energy storage
Self-consumption applications
Emergency power backup
Residential and small commercial energy storage
Combining 20KWh capacity, IP65 protection, active balancing and WiFi monitoring in one battery system, BetterESS provides a convenient solution for customers looking for a high-capacity 51.2V energy storage battery.
The system can be paired with a compatible inverter to build a complete home energy storage solution.
| Item | Specification |
|---|---|
| Brand | BetterESS |
| Battery Chemistry | LiFePO4 |
| Nominal Voltage | 51.2V |
| Capacity | 400Ah |
| Nominal Energy | 20.48KWh |
| Protection Rating | IP65 |
| Active Balancing | Yes |
| WiFi Monitoring | Yes |
| Fire Extinguisher | Yes |
| Application | Home Energy Storage |
| Installation | Indoor / Sheltered Outdoor |
| Inverter Compatibility | Compatible with suitable 48V/51.2V inverters |
Whether you need additional storage for your solar system, reliable backup power for your home, or a high-capacity battery for an off-grid application, the BetterESS 51.2V 400Ah 20KWh LiFePO4 Battery combines high capacity, smart monitoring and enhanced protection in a practical IP65 enclosure.
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Good quality cells and very solid packaging. The EVE 668Ah cells were exactly as described, and the installation went smoothly.
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