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We offer FREE shipping on all orders to most countries and regions.
Orders shipped from the EU warehouse: Free shipping is available to mainland EU countries (excluding remote islands).
Orders shipped from China: Free shipping is available to the EU, US, and other major regions (excluding remote islands).
Note: If your shipping address is in the UK, Switzerland, or Norway, and your order is shipped from our European warehouse, additional shipping fees will apply. Any customs duties or taxes incurred for these destinations must also be covered by the customer.
After you place an order, we will process it within 1-2 business days. Depending on your shipping address, we will ship from the nearest warehouse so you can receive your items as soon as possible.
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 listed is the final price. Free shipping, customs duties and tax are included, so you don’t need to pay any additional fees.
This product is shipped from China, with an estimated delivery time of 45–60 working days after shipment.
Reliable, scalable energy storage designed for modern residential solar systems.
✅ Stackable Capacity 24kWh – 64kWh
✅ Safe LiFePO4 Battery Technology
✅ 6000+ Cycle Life
✅ Intelligent BMS Protection
✅ Perfect for Home Solar Energy Storage
The BetterESS 400V High Voltage LiFePO4 Battery System is designed to provide reliable, efficient, and scalable energy storage for residential solar power systems.
With its stackable modular design, the system allows flexible expansion from 24kWh to 64kWh, making it ideal for households looking to increase energy independence and maximize solar self-consumption.
The 400V high voltage design reduces current loss and improves system efficiency compared with traditional low-voltage batteries.
Flexible stackable modules allow capacity expansion from 24kWh to 64kWh to meet growing energy needs.
Built with premium LiFePO4 cells offering 6000+ cycles and a 10+ year service life.
Advanced BMS provides real-time monitoring and multiple protections for voltage, current and temperature.
Designed for Multiple Energy Applications
🏡 Residential Solar Storage
Store excess solar energy during the day and power your home at night.
⚡ Home Backup Power
Keep essential appliances running during power outages.
🌞 Off-Grid Solar Systems
Reliable power solution for remote locations and off-grid living.
💰 Energy Cost Optimization
Store low-cost electricity and use it during peak tariff hours.
| Parameter | Specification |
|---|---|
| Model | 3P-HV-DC400V-1P8S-314 |
| Rate Power | 4200W |
| High Voltage Side - Work voltage (VDC) | 350~450 |
| High Voltage Side - Rated voltage (VDC) | 400 |
| High Voltage Side - Max continuous output power (W) | 4200 |
| Battery Type | LFP |
| Number of battery strings | 8 |
| Battery capacity | 314AH |
| Rated voltage (VDC) | 25.6 |
| Minimum full-load voltage (VDC) | 22.4 |
| Max full-load voltage (VDC) | 28.8 |
| Working Voltage (VDC) | 20~30 |
| Battery size | 610.0×250.0×390.0 mm |
| BCMU - Number of voltage detection channels | 8 |
| BCMU - Number of temperature detection channels | 8 |
| Battery current detection | -375A~+375A, ≤±1% |
| Safety & EMC standards | IEC60730, IEC62477, IEC61000-6-1/3 |
| Max number of parallel units | 16 |
| Switching time | 6ms |
| Operating mode | Charging / Discharging / Standby / Shutdown (Sleep) / Maintenance |
| Isolation method | High-frequency isolation |
| Cooling method | Natural cooling |
| Protection | 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 machine |
| Operating temperature | -20°C~50°C, No derating |
| Storage temperature | -40°C~70°C |
| Relative humidity | 5%~95%, no cooling |
| Operating altitude | 4000m MAX, >2000m derating |
| Communication interface | CAN, 232, 485 |
Growatt, Goodwe, SofarSolar, Deye, Voltronic, Victron, SRNE, Megarevo, PYLONTECH, Luxpowertek, Sorortec, SMA, GINLONG, MUST, TBB, STUDER, etc. (Contact us for compatibility with other inverters..)
| 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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⭐⭐⭐⭐⭐ Review Great supplier! Excellent support and very fast delivery from the EU warehouse. The battery cells arrived in perfect condition, well packed, and the quality is top-level (A-grade). Communication was clear and professional the whole time. Highly recommended!
hese are really excellent and of the highest quality, highly recommended, and do not become unbalanced even when charging if they exceed 120/130Ah.
Excellent batteries, all perfect in terms of weight and current capacity.
good service, i had a littble problem with the address, seller helped me to solve. finished the install 2 days ago, everything ok
swietne ogniwa pojemnosć zmiezona 685.55ah fajne busbary elastyczne ogniwa proste
