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WattCycle 51.2V 628Ah 32kWh Smart LiFePO4 Solar Home Energy Storage System - Active Balancing
- High-Capacity Power: With 32.15kWh of capacity and up to 15.36kW output, this battery can support most homes overnight or power essential appliances for multiple days during grid outages.
- Advanced Safety: A 3A active balancing module, temperature-sensitive LiFePO₄ fire suppression system, and advanced 300A BMS provide real-time voltage, current, and temperature monitoring while helping prevent overcharging, over-discharging, and overheating.
- User-Friendly Touchscreen: The intuitive touchscreen lets users select communication protocols, switch between multiple languages, and monitor key battery data directly on the unit.
- Intelligent Management: Built-in Bluetooth provides convenient smartphone access to real-time voltage, current, temperature, remaining capacity, battery status, and operating conditions.
- Broad Compatibility: Compatible with a wide range of mainstream 48V inverter systems, offering greater flexibility when building or expanding a home energy storage system.
- Significant Cost Savings: Store excess solar energy during the day and use it during peak-rate periods, potentially saving more than $1,000 annually, depending on local utility rates and household energy use.
- Simplified Installation & Scalability: Designed for straightforward setup without complex installation, the system supports up to six batteries in parallel, expanding total capacity to 192.9kWh.
- Superior Efficiency & Lifespan: EV Grade-A LiFePO₄ cells deliver 6000+ cycles at 80% DOD, providing dependable performance, excellent thermal stability, long-term safety, and lasting value.
This battery will be shipped by truck, so the delivery time needs to be confirmed with the recipient.
We offer free shipping within the continental U.S. via UPS Ground or FedEx, with orders typically processed in 1–2 business days and delivered within 2–5 business days. Large products such as 12V 628Ah, 48V 314Ah batteries, or 12kW inverters are shipped by truck (LTL) and require signature upon delivery. After order confirmation, we will contact you by email to confirm shipment, and transportation arrangements typically take about 48 hours. Please note that we do not ship to Alaska, Hawaii, Puerto Rico, or PO Box addresses. Delivery times may vary due to external factors such as carrier delays or weather conditions.
For complete details, please visit:
Shipping Policy.
📢 Announcement: Update on Customer Support & New Contact Channels
Dear WattCycle Community,
We recently received feedback from some customers who did not receive timely replies to their service emails. After investigating, we discovered that some emails were bounced or filtered into spam due to domain parsing issues, which caused customers to miss our responses. We’ve improved our email system to prevent this in the future.
Here are the updated official support channels:
Email Support
Shenzhen Washi Energy Co., Ltd.
📧 service@wattcycle.com (primary)
📧 wattcycle.service@gmail.com (backup)
👉 Please always reach out to service@wattcycle.com first. If you haven’t received a reply for a long time, kindly check your Spam or Trash folder. If there is still no response, you may then contact us via our backup email.
2. Messenger
If you do not receive an email reply promptly, you can also PM us via Messenger for faster assistance.
3. WhatsApp & Phone Support
Based on your valuable feedback, we now offer US phone number and WhatsApp support for more direct and convenient help:
📱 Phone Support: +1 (229) 466-5899
💬 WhatsApp Support: +86 15361409198
🚛 Wholesale Inquiry: sale@wattcycle.com
+852 5473 5422 (WhatsApp)
4. Response time
Email: (Monday-Sunday) Reply within 24 hours
Phone: (Monday-Friday) 9:30 am-19:00 pm CST
We sincerely appreciate your patience and understanding as we continue to improve our service, and we remain committed to providing efficient and reliable support to all our customers.
Kind reminder: For after-sales inquiries, please include your order number and the platform where the purchase was made so we can assist you more quickly. Thank you for your cooperation and support.
— WattCycle Official Team
Our batteries come with a 5-year warranty, which can be extended to 7 years total upon product registration. Accessories are covered by a 1-year warranty, and like-new (refurbished) batteries include a 1-year warranty.
For full terms, conditions, and claim details, please visit:
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Fast, Free Shipping
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30-Day Money-Back Guarantee
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LiFePO4 Smart Home Storage Specifications
| Model Parameters | 48V 100Ah Smart Storage 5.12kWh | 48V 314Ah Smart Storage 16.07kWh | 51.2V 628Ah Smart Storage 32.15kWh / 300A BMS |
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| Battery Type | LiFePO4 Battery | LiFePO4 Battery | LiFePO4 Battery |
| Battery Capacity | 5.12kWh | 16.07kWh | 32.15kWh |
| Nominal Capacity | 100Ah | 314Ah | 628Ah |
| Rated Operating Voltage | 51.2V | 51.2V | 51.2V |
| Internal Resistance | ≤ 13.9mΩ | ≤ 13.9mΩ | ≤ 13.9mΩ |
| Recommended Charge Current | 50A | 150A | 150A |
| Maximum Continuous Charge Current | 100A | 305A | 300A |
| Recommended Discharge Current | 50A | 150A | 150A |
| Maximum Continuous Discharge Current | 100A | 305A | 300A |
| Overcharge Protection | 58.4V | 58.4V | 58.4 ± 0.64V |
| Overdischarge Protection | 40V | 40V | 40 ± 0.64V |
| Charging Overcurrent | 110 ± 10A / 10s | 310 ± 10A / 10s | — |
| Discharging Overcurrent | 120 ± 10A / 10s | 310 ± 10A / 10s | 310 ± 10A / 9–12s 350 ± 10A / 0.7–2s |
| Equalization | Active Balancing | Active Balancing | Active Balancing |
| Parallel Capability | Up to 15 Units | Up to 15 Units | Up to 6 Units |
| Communication Protocol | RS485, CAN | RS485, CAN | RS485, CAN |
| Charging Temperature | 0°C to 55°C 32°F to 131°F | 0°C to 55°C 32°F to 131°F | 0°C to 55°C 32°F to 131°F |
| Discharging Temperature | -20°C to 60°C -4°F to 140°F | -20°C to 60°C -4°F to 140°F | -20°C to 60°C -4°F to 140°F |
| Dimensions (L × W × H) | 15.67 × 7.87 × 24.61 in 398 × 200 × 625 mm | 17.72 × 9.45 × 34.65 in 450 × 240 × 880 mm | 27.56 × 9.84 × 42.60 in 700 × 250 × 1082 mm |
| Weight | 99.21 lbs / 45kg | 253.53 lbs / 115kg | 612.88 lbs ± 5% 278kg ± 5% |
