Tewaycell 32kWh LiFePO4 51.2V 628Ah Home Backup Battery for Solar & Off-Grid
Free Shipping, Free customs duties and Free tax, you don't need to pay any other fees! DDP Shipping method!
High energy density, deep cycle life.
Up to 15 units in parallel to expand capacity.
Compatible with various inverters.
Perfect for solar home systems, power outages, off-grid living.
The Tewaycell 32kWh LiFePO4 Home Backup Battery (51.2V 628Ah) — also available in 28kWh (560Ah) — is a high-capacity home energy storage system built with Grade A+ 314Ah/280Ah lithium iron phosphate (LiFePO4) cells (16S2P). As a reliable solar battery backup solution paired with a compatible hybrid inverter, it keeps your lights, fridge and essential appliances running during power outages, maximizes your solar self-consumption and gives you true energy independence.
Features：
Two Capacities, Two Power Levels — choose 28kWh (560Ah) or 32kWh (628Ah), paired with 10kW or 15kW output to match your residential energy storage needs.
Built-in Active Balancer — keeps cell balanced for longer deep cycle life and stable performance under heavy loads.
Temperature-Sensitive Fire Extinguisher — an extra layer of fire safety.
Grade A+ 314Ah/280Ah LiFePO4 Cells — brand-new lithium iron phosphate cells, 16S2P configuration, available in 28kWh (560Ah) and 32kWh (628Ah).
Expandable Up to 15 Units — modular home energy storage that scales up to 480kWh (32kWh model) as your needs grow.
RS485 / RS232 / CAN / (Optional) WiFi Communication — seamless inverter integration with Growatt, Deye, Goodwe, Victron, Voltronic, Sofar, SRNE, Pylontech and more and delivers whole home backup power during outages.
DDP Door-to-Door Delivery — free shipping, free customs duties and free taxes. 
Download Documentation:
Tewaycell 28kWh/32kWh LiFePO4 Battery Built-in 200A BMS User Manual.PDF
Tewaycell 28kWh/32kWh LiFePO4 Battery Built-in 300A BMS User Manual.PDF
| Technical Specifications | ||||
| Parameter | TW-MB51628-300A-HWB | TW-MB51560-300A-HWB | TW-MB51628-200A-HWB | TW-MB51560-200A-HWB |
| Nominal Capacity | 628Ah | 560Ah | 628Ah | 560Ah |
| Nominal Voltage | 51.2V | |||
| Charging Voltage | 56.8–57.6V | |||
| Operating Voltage | 43.2V ~ 58.4V | |||
| Standard Charging Current | 0.2C | |||
| Standard Charging Mode | At 25℃, charge to 58.4V with constant current 0.2C5A, then constant voltage 58.4V until current ≤ 0.02C5A. | |||
| Max. Charging Current | 300A | 200A | ||
| Max. Discharge Current | 300A | 200A | ||
| Max. Output Power | 15,000W | 10,000W | ||
| Charging Temperature | 0℃ to 45℃ (32°F to 113°F) @ 60±25% RH | |||
| Discharge Temperature | -20℃ to 60℃ (-4°F to 140°F) @ 60±25% RH | |||
| Storage Temperature | -20℃ to 60℃ (-4°F to 140°F) @ 60±25% RH | |||
| Line Connector | 350A Self-Locking Quick Release Connector | 250A Self-Locking Quick Release Connector | ||
| Net Weight (Approx.) | about 238 kg | |||
| Communication Protocol | RS485、RS232、CAN、WiFi | RS485、RS232、CAN | ||
| Supported Inverter Brands | Growatt、Deye、Goodwe、Voltronic、Sofar、Victron、Megarevo、SRNE、PYLON、Luxpowertek、Sorotec、SMA、GINLONG、MUST、TBB、STUDER | |||
FAQ:
Q: Do I need an inverter?
A: Yes. This is a battery storage unit only. A compatible hybrid inverter (e.g. Growatt, Goodwe, Deye, SofarSolar, Voltronic, Victron, SRNE, Megarevo, PYLONTECH, Luxpowertek, Sorortec, SMA, GINLONG, MUST, TBB, STUDER, Solis, etc.) is required to connect solar panels, the grid and your home electrical system. Contact us for compatibility with other inverters
Q: How safe is a lithium iron phosphate battery?
A: Lithium iron phosphate (LiFePO4) is one of the safest battery chemistries available, with excellent thermal stability and low risk of thermal runaway. The Tewaycell home energy storage battery adds multiple layers of protection: a smart BMS (Battery Management System) that monitors voltage, current and temperature; a built-in active balancer that keeps cell balanced; and a temperature-sensitive fire extinguisher that automatically responds to overheating for extra peace of mind.
Q: How many batteries can I connect in parallel?
A: Up to 15 units of the same model and brand for optimal performance to expand your home energy storage capacity. If you plan to connect multiple units, we recommend ordering them together.
Q: What's included in the package? Do I need to buy extra accessories?
A: Each unit includes: 1× Tewaycell 28kWh / 32kWh battery, 1× pair of positive & negative battery cables, 1× RS232 communication cable, 1× user manual, and secure wooden-case packaging. If you order 2 or more units for parallel connection, we also include battery-to-battery communication cables. And you need to buy a compatible hybrid inverter.
Q: Where can I install the battery? Indoor or outdoor?
A: Designed for indoor installation in a dry, ventilated area such as a garage, basement or utility room, this LiFePO4 home battery operates from -20°C to 60°C for discharge and 0°C to 45°C for charging. Avoid direct sunlight, rain, extreme humidity and confined spaces without ventilation. The floor-standing design with caster wheels makes it easy to position and move.
Q: What is the cycle life?
A: LiFePO4 batteries are known for their long deep cycle life — typically 6000+ cycles at 80% depth of discharge, far exceeding lead-acid or NMC batteries.
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. 5-7 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
