Tewaycell 8kWh LiFePO4 High Voltage Battery with 25.6V to 400V DC Boost
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Tewaycell 8kWh LiFePO4 High Voltage ESS is built-in DC boost module converting 25.6V battery voltage to 400V DC output.
Features:
25.6V to 400V DC Boost--- Built-in high-efficiency DC boost technology
Unlike conventional low-voltage batteries, the Tewaycell system integrates a DC boost module that converts the 25.6V battery voltage to a stable 400V DC high-voltage output.
This makes the battery suitable for high-voltage energy storage systems without requiring a conventional series-connected high-voltage battery stack.
8kWh LiFePO4 Battery
Powered by a 25.6V 314Ah LiFePO4 battery, each unit provides approximately 8kWh of energy capacity. LiFePO4 chemistry delivers excellent thermal stability, 6000+ long cycle life and reliable performance for daily home energy storage.
Expandable Energy Storage
Start with approximately 8kWh and expand your storage capacity as your energy needs grow.
Connect multiple units to build larger systems:
8kWh → 16kWh → 24kWh → 32kWh → 40kWh+
Ideal for homes with different energy consumption levels and solar storage requirements.
IP65 Protection
The IP65-rated enclosure helps protect the battery system against dust and water jets, making it suitable for demanding installation environments.
Passive heat dissipation with integrated heat sinks
The system uses a passive cooling design with integrated heat sinks, efficiently dissipating heat generated during battery operation without forced-air fans. The fanless design helps reduce operating noise, minimize moving parts, and lower maintenance requirements.
Multi-Protocol Communication
CAN, RS232, RS485 for HV inverters compatibility, such as Goodwe ES/ET HV series, Solis RHI/S6 HV series, Growatt SPH HV series, AISWEI HV series, SWatten HV series, Sinexcel ISUNA HV series, Solinteg MHS HV series, PYLONTECH etc. (Contact us for compatibility with other inverters)
| Model | HV-DC400V-8kWh | 2P-HV-DC400V-8kWh | 3P-HV-DC400V-8kWh | 4P-HV-DC400V-8kWh | 5P-HV-DC400V-8kWh | 6P-HV-DC400V-8kWh |
|---|---|---|---|---|---|---|
| Inverter Board Model | TBCU25400-4K2I | |||||
| No. of Inverter Boards | 1 | |||||
| Battery Model | 8S1P-314Ah (8,038.4Wh, 25.6V) | |||||
| No. of Batteries | 1 | 2 | 3 | 4 | 5 | 6 |
| Size (mm) | 700×360×437 | 700×360×687 | 700×360×937 | 700×360×1187 | 700×360×1437 | 700×360×1685 |
| Energy Capacity | 8,038.4 Wh | 16,076.8 Wh | 24,115.2 Wh | 32,153.6 Wh | 40,192 Wh | 48,230.4 Wh |
| Operating Voltage (VDC) | 350 – 450 | |||||
| Rated Voltage (VDC) | 400 | |||||
| Max Continuous Output Power | 4.2 kW | 8.4 kW | 12.6 kW | 16.8 kW | 21 kW | 25.2 kW |
| BMU Parameters | ||||||
| Voltage Detection Channels | Route 8 | |||||
| Temperature Detection Channels | Route 8 | |||||
| Battery Current Detection | -375A – +375A, ≤±1% | |||||
| Basic Characteristics | ||||||
| Max Parallel Connections | 16 | |||||
| Switching Time | 6 ms | |||||
| Work Mode | Charging, Discharging, Standby, Power Off (Hibernation), Repair | |||||
| Isolation Method | High Frequency Isolation | |||||
| Cooling Method | Natural Cooling | |||||
| Protection | Over-temperature, over-current, short-circuit, overcharge, over-discharge, cell overvoltage | |||||
| Protection Level | IP65 and above (with complete unit) | |||||
| Operating Temperature | -20°C to 50°C, no derating | |||||
| Storage Temperature | -40°C – 70°C | |||||
| Relative Humidity | 5% – 95%, non-condensing | |||||
| Working Altitude | 4,000 m MAX, >2,000 m derating | |||||
| Communication Interface | CAN, RS232, RS485 | |||||
Designed for Home & Solar Energy Storage
Tewaycell high-voltage LiFePO4 battery systems are designed for a wide range of residential energy storage applications.
Solar Energy Storage
Store excess solar energy during the day and use it when solar production is low.
Home Backup Power
Keep essential household loads powered during grid outages when integrated with a compatible inverter and backup system.
Energy Self-Consumption
Use stored energy during peak-demand periods to improve the utilization of your solar power system.
Residential Energy Storage
Build a scalable battery system that can grow with your household's energy needs.
Frequently Asked Questions
Q: What is the output voltage of the battery?
A: The battery uses a 25.6V LiFePO4 battery pack with a built-in DC boost module that provides a nominal 400V DC high-voltage output. The specified operating output range is 350–450V DC.
Q: What is the capacity of one battery?
A: One battery module provides approximately 8.04kWh of energy capacity, based on a 25.6V 314Ah LiFePO4 battery pack.
Q: Can I expand the battery capacity?
A: Yes. Multiple battery units can be configured for larger energy storage systems. Available configurations include 8kWh, 16kWh, 24kWh, 32kWh and 40kWh options and more. Please confirm the required configuration before ordering.
Q: Which inverters are compatible?
A: The battery is designed for compatible high-voltage energy storage inverters from brands such as GoodWe, Solis, Growatt, AISWEI, SWatten, Sinexcel and Solinteg. Compatibility depends on the exact inverter model and communication configuration.
Shipping Fee
For the orders shipped from China, free shipping for EU，US, UK, and ect，Except for island addresses
For the orders shipped from EU, free shipping to addresses in mainland EU:
If you are a Swiss customer, you can fill in an EU address to place an order.
VAT & Customs Duties
Tax-free, Free customs duties, Free any other miscellaneous fees. You don't need to pay any additional fees.
No VAT/Tax is collected, and you do not need to pay any additional taxes.
Tewaycell Oversea Warehouse
Rapid delivery-overseas warehouse in US, Canada, Germany and Poland.
Delivery Countries
Asia Pacific
Japan, Malaysia, Singapore, Thailand, Australia
Europe
Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom
* If your consignee's address is Ukraine, the shipping time may exceed 60 days due to the war. If you place an order in our store, then you accept this shipping time. Thank you for your support and understanding.
Regarding the shipping of orders from Swiss customers:
If you are a Swiss customer, you can fill in an EU address to place an order.
Regarding the shipping of orders from Romania customers:
Due to Romanian government regulations, goods may be subject to secondary customs clearance when transported to Romania. If secondary customs clearance occurs, the customer is responsible for the secondary customs clearance and the cost of the secondary customs clearance.
Our delivery time information at a glance:
Total Delivery Time = Handling Time + Transit Time (+ any holidays and weekends)
Ship to USA/North America
|
Warehouse |
Shipping Option |
Handling Time |
Estimated Delivery Time |
|---|---|---|---|
|
US/CA |
Fedex/DHL/UPS(Tax Free) |
1~3 working days |
3~7 working days |
|
CN |
By Sea+Express (Fedex/DHL/UPS, Tax Free) |
3~7 working days |
30~45 working days |
Ship to EU
|
Warehouse |
Shipping Option |
Handling Time |
Estimated Delivery Time |
|---|---|---|---|
|
DE/POL |
DHL/GLS/DPD/UPS/TNT(Tax Free) |
1~3 working days |
3~7 working days |
|
CN |
By Railway/Sea+Express (DHL/GLS/DPD/UPS/TNT, Tax Free) |
3~7 working days |
45~60 working days |
Ship to Asia Pacific/Middle East
|
Warehouse |
Shipping Option |
Handling Time |
Estimated Delivery Time |
|---|---|---|---|
|
CN |
By Sea/Railway+Express (DPD/Toll/UPS/Fedex/TNT, Tax Free) |
3~7 working days |
45~60 working days |
1, We ship to our shipping agency after quality test, check and well packed. About 7 work days.
2, Shipping agency collect enough goods for a container, then ship to EU by sea. 7-15 working days. At the same time, they send the order information to DPD express to get the tracking number.
3, After about one month's sea voyage to the EU port.
4, The shipping agent handles the customs clearance formalities, sorts the packages, and then sends them to the corresponding DPD express warehouse. 5-10 working days
5, DPD express start the delivery to customers, from now on, the logistics will be updates by DPD express. 3-7 days delivery.
In the 2-4 stages, the traking updates always write "DPD data centre, Order information has been transmitted to DPD."
CE
SGS
ISO9001
KC
IEC
UN38.3 Test
MSDS
