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Fast, Free Shipping
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30-Day Money-Back Guarantee
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Hassle-Free Warranty
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Lifetime Customer Support
WattCycle Storm-Ready Whole-Home Backup Power Kit — 48V 12kW Hybrid Inverter + 48V 314Ah 16kWh Battery
- ⚡ Whole-Home Backup Power: 12kW split-phase output paired with 16.07kWh LiFePO₄ storage runs central AC, fridge, and all essentials for 2–3 days.
- 🔄 ≤10ms UPS Seamless Transfer: Grid goes down? You won't even notice—sensitive electronics, medical devices, and TVs stay on without a flicker.
- ☀️ 24kW Dual MPPT Solar Recharge: Harvest massive solar energy during and after the storm. Your batteries refill by daylight, keeping you off-grid indefinitely.
- 📈 Limitless Expansion: Scale up to 6 inverters (72kW) and 15 batteries (240kWh+)—build a system that grows with your home or farm.
- 🛡️ Certified Safe & Built to Last: EV-grade cells, 3A active balancing, and 5+2 year warranty for decade-long peace of mind.
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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Hassle-Free Warranty
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Lifetime Customer Support
Storm-Ready Power System Kit Specifications
| System Component | 12kW Hybrid Inverter | 48V 314Ah LiFePO4 Battery |
|---|---|---|
| 1. Core Performance & Capacity | ||
| Rated Power / Capacity | 12,000W (Split Phase) / 7,200W (Single) | 16.07kWh / 314Ah (Single Cell) |
| Peak Power / Surge | 24,000VA | 310±10A / 10s (Overcurrent) |
| Output / Rated Voltage | 120Vac / 240Vac (Pure Sine Wave) | 51.2V (Operating Range: 40V - 58.4V) |
| 2. Solar & Charging Specs | ||
| Max. PV Input Power | 24,000W (12,000W + 12,000W) | -- (Charged via Inverter) |
| MPPT Tracker / Voltage | 2 Groups / 90Vdc ~ 450Vdc (Max 500Vdc) | -- |
| Max. Charging Current | 250A (PV + AC Combined Hybrid Charge) | 150A Standard (Max 305A Input/Output) |
| 3. Management & Expansion | ||
| Transfer Time / Balancing | ≤ 10ms UPS Seamless Transfer | Active Equilibrium (3A Active Balancer) |
| Max. Parallel Scalability | Up to 6 Units (72kW Total) | Up to 15 Units (240kWh+ Total) |
| Communication / Protocol | USB, RS485, WiFi, GPRS, Dry Contact | RS485, CAN |
| 4. Physical & Environmental | ||
| Dimensions (L×W×H) | 24.41 x 17.72 x 5.20 in 620 x 450 x 132 mm |
17.72 x 9.45 x 34.65 in 450 x 240 x 880 mm |
| Weight | 52.47 lbs / 23.8 kg | 253.53 lbs / 115 kg |
| Operating Temperature | -10°C to 55°C (>45°C derating) | Charge: 0~55°C / Discharge: -20~60°C |
| Cooling & Certification | Forced Air (Variable Speed Fan) / FCC Part 15 Class B | Smart BMS Security Protection |
WattCycle Backup Power FAQ
A: For most homeowners, a battery backup system is the better long-term choice, especially in hurricane-prone regions.Whole-house standby generators cost $5,000–$15,000 installed, require professional maintenance, need natural gas/propane lines (which can be disrupted), and produce 60–80dB of noise. They also have a limited lifespan (10–15 years) and zero resale value.WattCycle battery systems offer compelling advantages:
- Lower total cost: A 48V 100Ah 5.12kWh Battery ($829.99–$999.99) + 12kW Inverter ($1,599.99) starts at under $2,500—far less than a standby generator installation.
- Solar savings year-round: Unlike a generator that sits idle 99% of the time, your WattCycle system works daily with solar panels to reduce electric bills. The 314Ah 16kWh battery can save up to 10,000 kWh annually with deep discharge twice daily.
- Scalable: Add batteries as budget allows. No need to overspend upfront.
- Silent & clean: No fuel, no fumes, no noise complaints.
- UPS function: The ≤10ms transfer protects sensitive electronics (computers, medical devices, TVs) that generators can damage.
- 15+ year lifespan: EV-grade cells with 3A active balancing and 5+2 year warranty outlast most generators.
A: Yes, you can. However, the inverter’s auto-sleep behavior depends on active inputs and loads:
- Auto-Sleep Threshold: When the AC load drops below 25W, the inverter will automatically enter sleep mode after about 5 minutes to conserve battery life.
- Solar Override: If there is active PV (solar) input, the inverter will stay awake to manage the incoming solar energy and will not enter sleep mode.
- Pro-Tip for Evening/Night: During dusk or overcast periods when solar input drops below 15W, the inverter's standby self-consumption (80–120W) may exceed the solar generation. To prevent unnecessary battery drain at night or during weak sun conditions, we highly recommend manually turning off the inverter's AC output.
A: Yes, absolutely! While our inverter is a heavy-duty split-phase system, it natively supports Single-Phase 120V Dual Modes for standard household setups or RV integrations without complicated wiring.
Here is how to set it up as a standard 120V system:
- AC Input (Charging): Connect your line only to L1 and N (leaving L2 disconnected).
- AC Output (Load): Draw your power directly from L1 and N to power your standard 120V appliances or sub-panel.
- Inverter Setting: Configure your output priority to Battery Priority (SOL).
- The Result: The system bypasses the 240V split-phase requirement and directly outputs standard, stable 120V utility-style power—making it perfect for RV parks, mobile workshops, or simple DIY emergency backups.
![[👍 Bestseller] WattCycle 12V 314Ah Mini Basic LiFePO₄ Battery – Compact Size, High Capacity](http://www.wattcycle.com/cdn/shop/files/WattCycle_12V_314Ah_MINI_Lithium_Battery_1.webp?v=1764766543&width=300)
