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⚡️Insane Launch Price: $699.99⚡️ Server Rack 48V (51.2V) 100Ah LiFePO₄ Battery with Bluetooth, LCD Display & Communication

⚡️48V 100Ah Server Rack LiFePO₄ with Bluetooth + LCD — now open for pre-order. Ships on November 30. Stay tuned!
Sale price $699.99 Regular price $1,599.99
WattCycle Flagship All-in-One Home & Off-Grid LiFePO₄ Energy System

High-Craftsmanship & Ultra-Reliable Power for Home Storage Emergency, Off-Grid, Industrial, Commercial, and UPS.

  • 👍 Active Balancing (3A): Fast multi-channel equalization improves efficiency, reduces energy loss, and extends overall battery life.
  • BYD Grade A Prismatic Cells: Support 1C full charge/discharge and deliver 10+ years of stable use.
  • 100A BMS Intelligent Protection: Provides 20+ protections with 200A (2s) peak current for high-demand loads.
  • All-Weather Protection: Low-temperature cutoff and overheat protection help the system adapt to extreme weather and emergency outages.
  • Capacity: 5120Wh | 5120W, engineered for safe and reliable home and off-grid power.
  • Smart Monitoring: LCD touchscreen for quick access to real-time battery information and system status.
  • App Management: Fast connection via app for remote battery status viewing and control.
  • Inverter Integration: Supports CAN/RS232/RS485 communication for seamless integration with most major inverter brands and smart charge/discharge control.
  • Premium Durability: Core components and internal metal structure are built with advanced manufacturing for long-term reliability.
  • Robust Casing: High-quality sheet metal housing that is fireproof, wear-resistant, and optimized for heat dissipation.
  • 3U Rack-Mount Design: 19.09 × 17.72 × 5.24 inches | 91.9 lbs, fits standard 3U cabinets with plug-and-play installation.
  • Scalable Parallel System: Supports up to 20 units in parallel with master/slave auto-recognition.
  • Space & Weight Savings: Up to 80% lighter and 75% smaller; 1 unit equals 8 × 12V 100Ah lead-acid batteries.
  • Fast Charging: Max. 1C charging via solar, LiFePO₄ chargers, or generators for quick energy replenishment.
  • Energy Cost Savings: Up to $300 per year savings through solar storage or off-peak charging with peak-time discharge.
  • Worry-Free After-Sales: 5+2 years unique warranty, shipping insurance, and 24/7 professional technical support.
  • Certified Safety: SDS / UL / UN38.3 / IEC / CE / FCC for global safety and performance compliance.

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Shipping Service

Thank you for choosing WattCycle for your LiFePO4 battery needs! We understand that getting your batteries quickly and safely is important to you. This policy outlines the shipping process for WattCycle orders.

Destinations:

  • We only ship orders to Continental 
  • Currently we DO NOT ship to Alaska, Hawaii, and Puerto Rico.
  • Please do not use PO Box addresses, which are not within the delivery range of FedEx. If you accidentally use such addresses, please contact us to change them in time to avoid delays in delivery.

Shipping Fee:

  • FREE shipping on all orders
  • Shipping method: UPS Ground & Fedex

Shipping time:

The time frame of an order delivery is divided into two parts:

  • Processing time: 1-2 business days
  • Shipping time: 2-5 business days
  • The shipping will delay for some objective or uncontrolled reasons. We will notice our customer ahead for delays.

Tracking Your Order:

  • Once your order ships, you will receive a confirmation email with a tracking number. You can use this tracking number to track the progress of your shipment on the carrier's website.

Disclaimer:

  • While we strive to meet the estimated delivery times provided, these are estimates and actual delivery times may vary depending on factors beyond our control, such as carrier delays or weather conditions.

Changes to This Policy:

  • We reserve the right to modify this Shipping Policy at any time. We will post any changes to this policy on our website.

We appreciate your support! If you have any questions about our shipping policy, please feel free to contact us at service@wattcycle.com.

Warranty Policy

Warranty Policy

At WattCycle, we stand behind the quality and performance of our batteries. We offer a comprehensive warranty to ensure your satisfaction with your purchase.

Please read the product manual carefully before installing and using the product, and use the battery correctly under the instructions of the manual.

Warranty Period

WattCycle warrants that the product will be free from defect in workmanship and material to the original consumer purchaser.
The warranty period starts on the date of purchase by the original consumer purchaser.

  LiFePO4 Batteries (>50Ah) LiFePO4 Batteries (≤50Ah) Cells / Like New Batteries LiFePO4 Battery Charger Accessories
Website 5+2 Years 3 Years 3 Years 3 Years 1 Year
Amazon 5+2 Years 3 Years 3 Years 3 Years 1 Year
Temu 5+2 Years 3 Years 3 Years 3 Years 1 Year
Ebay 5+2 Years 3 Years 3 Years 3 Years 1 Year

Note: Only registered customers can extend the warranty service by 2 years. Final interpretation rights belong to WattCycle.

Question: Will my lithium battery still be covered under warranty after being connected in series or parallel?

Answer: As long as your product meets the warranty conditions and you have registered for the warranty, you will receive the corresponding warranty period. Connecting the batteries in series or parallel (or other normal operations) will not affect your product's warranty duration.

Warranty Statement

Any defects in material, workmanship of your product will be covered after you provide any valid proof of purchase and information including but not limited to:

1. A purchased order number made through WattCycle official stores.
2. Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Note: The limited warranty is restricted to the country of purchase. The warranty will be invalid on the items once they are taken or shipped to other countries.

Exclusions of Warranty 

1. Misused, abused, damaged by accident or damaged due to force majeure. (e.g. lightning strikes, tornadoes, hurricanes, etc.);
2. Unauthorized modification, repair, dis-assembly or operation not in accordance with the official instructions or manuals;
3. Lost, stolen or full refunded product;
4. Warranty period expired;
5. The battery model on the warranty certificate does not match the actual item;
6. Product wear and tear through the usage of time.

Procedures for Warranty Claims

We’ll assist to analyze the consumer’s problem within 24 hours, and help solve the problem, restore battery usage, and introduce the optimal use method.

If our product fails to work normally, the consumer assists us in completing all the battery testing, and both parties confirm that the product does have quality problems, we’ll send a new battery replacement to the defective battery after it has been returned to our US warehouse by the pre-paid label we prepared. And the defective battery will be checked and tested by our technical team to analyze the problem.

From the date of purchase and within 6 months, if our products have quality problems and cannot work normally, we can provide replacement or refund services; Within 7 months from the date of purchase to the end of the warranty, if our products have quality problems and cannot work normally, we can provide replacement services.

Any product(s) returned for valid warranty service will be shipped at the expense and risk of us. We will provide a pre-paid label to customers who need to return the products to the designated place at the specified time.

Batteries that have been serviced or replaced under their warranty period do not receive extended warranties. Instead, the serviced/replaced battery(-ies) will abide by the original warranty period issued when first purchased.

Changes to This Policy:

We reserve the right to modify this Warranty Policy at any time. We will post any changes to this policy on our website.

Contact Us:

If you have any questions about our Warranty Policy, please feel free to contact us at service@wattcycle.com.

We encourage you to read this warranty policy carefully. By purchasing a WattCycle battery, you agree to the terms and conditions of this warranty.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.