Tewaycell 20kWh LiFePO4 Battery 51.2V 400Ah IP65 Home Energy Storage for Backup Power
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Tewaycell 20kWh LiFePO4 Home Battery – 51.2V 400Ah IP65 Lithium Battery for Home Backup Power
Power your home with the Tewaycell 51.2V 400Ah LiFePO4 battery, designed for residential energy storage, solar power systems, and home backup power. This 20kWh home battery combines an integrated Battery Management System (BMS), IP65-rated enclosure protection, built-in aerosol fire suppression, and Bluetooth and Wi-Fi connectivity.
Features:
20kWh High-Capacity LiFePO4 Battery
The 51.2V 400Ah LiFePO4 battery delivers 20.48kWh of nominal energy, ideal for home energy storage, solar systems, and backup power.
Smart BMS with WiFi & Bluetooth
Monitor real-time SOC, voltage, and charging power via mobile app, helping optimize solar self-consumption and energy usage.
Active Balancing
The integrated Battery Management System (BMS) incorporates 2A cell balancing to help maintain cell voltage consistency and support reliable battery operation.
Built-In Aerosol Fire Suppression
An integrated condensed aerosol fire suppression device adds a layer of fire protection within the battery enclosure.
Wide Inverter Compatibility
Supports CAN, RS485 and RS232 communication and is compatible with many popular solar inverter brands, including Deye, Growatt, GoodWe, Victron, Sofar and more.
IP65-Rated Enclosure Protection
The IP65-rated enclosure provides protection against dust ingress and water jets from any direction under specified test conditions. This makes the battery suitable for appropriately designed indoor or sheltered outdoor energy storage installations.
| IP65 20kWh LiFePO4 Battery Specification | |
|---|---|
| Model | IP51400-200A-WIFI+AB |
| Nominal Capacity | 400Ah |
| Nominal Voltage | 51.2V (16S1P) |
| Charging Voltage | 56.8V-57.6V |
| Operating Voltage | 44.8V~57.6V |
| Standard Charging Current | 0.2C |
| Standard Charging Mode | At a temperature of 25℃,charge to 58.4V with a constant current of 0.2C5A,and then change continuously with a constant voltage of 58.4V until the current is not greater than 0.02C5A. |
| Maximum Charging Current | 200A |
| Maximum Discharge Current | 200A |
| Charging Temperature | 0℃to 45℃(32°Fto 113°F)@60±25%relative humidity |
| Discharge Temperature | -20℃ to 60℃(-4°Fto 140°F)@60±25%relative humidity |
| Storage Temperature | 10℃ to 25℃(50°F~77°F)@60±25%relative humidity |
| Line Joint | 250A Self-Locking Fitting Quick Release Connector |
| Net Weight Approx. | 145kg |
| Communication Protocol | RS485、RS232、CAN |
| Support Inverter Brand | Growatt、Deye、Goodwe、voltronic、Sofar VICTRON、Megarevo、SRNE、PYLON Luxpowertek、Sorotec、SMA、GINLONG、MUST、TBB、STUDER |
Download Document:
Tewaycell IP65 20kWh LiFePO4 Battery User Manual.PDF
Applications
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Home energy storage
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Solar energy storage systems
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Residential backup power
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Compatible off-grid energy systems
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Compatible hybrid inverter systems
Frequently Asked Questions (FAQ)
Q: Is this battery compatible with my inverter?
A: The Tewaycell 20kWh LiFePO4 Battery is a 51.2V low-voltage (LV) battery system designed for 48V-class hybrid inverters with a battery input range of approximately 40V–60V.
Before ordering, please confirm:
✅ Your inverter supports 48V/51.2V lithium battery systems
✅ Your inverter supports compatible CAN or RS485 communication protocols
The battery is compatible with many mainstream inverter brands, including Growatt, GoodWe, Deye, SofarSolar, Victron, Voltronic, SRNE, Megarevo, PYLONTECH, SMA, Solis, MUST, TBB, Studer, and more.
⚠️ This battery is not compatible with high-voltage (HV) inverter systems requiring battery voltages above 100V.
Please contact us with your inverter brand and model before purchase if you're not sure, and we will confirm compatibility.
Q: Is this LiFePO4 battery waterproof?
A: The battery features an IP65-rated enclosure designed to protect against dust ingress and water jets under specified test conditions. IP65 protection does not mean the battery can be submerged in water.
Q: Does the battery have a built-in battery management system (BMS)?
A: Yes, it features an integrated BMS with 2A cell balancing to help maintain cell voltage consistency and support reliable battery operation.
Q: Does this home energy storage battery have fire protection?
A: Yes, the battery includes a built-in condensed aerosol fire suppression device as an additional safety feature within the battery enclosure.
Q: Can I monitor the battery through my smartphone?
A: Yes, the battery supports Bluetooth and Wi-Fi connectivity. Battery status and operating information can be monitored through a compatible application
⚠️Important Delivery Notice：
Please inspect the outer packaging and product carefully within 24 hours of delivery. If you notice any transportation damage, missing parts, or an incorrect product, please take clear photos/videos and contact us within 24 hours.
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；
Goods in EU warehouses cannot be shipped to the UK.
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 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, Croatia，UK
* 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."
Address Changes & Additional Delivery Charges
Due to the high value and shipping costs of our products, any additional charges incurred due to customer-related reasons such as address changes, re-delivery, rerouting, storage, or other fees need to be paid by the customer.
If the additional charges are caused by an error on our part, Tewaycell will be responsible for the applicable costs.
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