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【👑3rd Anniversary】12V 628Ah Ultra Lithium Battery with Bluetooth

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    Unmatched Power and Durability for Demanding Applications

    Engineered for high-performance energy storage, the WattCycle 12V 628Ah LiFePO4 Lithium Battery redefines reliability and longevity. Built with advanced lithium iron phosphate (LiFePO4) technology, this powerhouse delivers exceptional cycle life, safety, and scalability—perfect for off-grid solar systems, RVs, marine use, and commercial backup power solutions.

    • Massive 8.04kWh Storage: Perfect for energy-intensive applications (RVs, solar systems, marine).
    • High-Discharge Capability: Delivers 300A continuous current (3,840W), powering heavy loads like inverters and industrial equipment.
    • 3x Lighter Than Lead-Acid: At 115.1 Wh/kg, reduces installation effort and boosts mobility for RVs/boats.
    • Zero Maintenance & 100% Recyclable: No toxic chemicals, aligning with sustainable energy goals.
    • 6,000+ Cycles at 80% Depth of Discharge: Outlasts standard LiFePO4 batteries by 2–3x, ensuring decades of reliable service.
    • Low Self-Discharge (<3%/Month): Retains charge during seasonal storage, ideal for part-time RVers or backup systems.
    • Wide Temperature Range: Operates safely from -25°C to 75°C (-13°F to 167°F), even in harsh environments.
    • Bluetooth Monitoring: Track real-time battery health (voltage, SoC, temperature) via mobile app (confirm functionality with manufacturer).
    • Plug-and-Play Expansion: Supports 4-series (51.2V) or 4-parallel (2,512Ah) setups for custom energy solutions.
    • Lower Lifetime Cost: 6,000-cycle lifespan slashes replacement expenses vs. lead-acid or cheaper lithium options.
    • Versatile Applications: Ideal for off-grid homes, commercial backup, telecom, agriculture, and adventure vehicles


    WattCycle 12V 628Ah Ultra Deep Cycle Lithium Battery
    Experience industry-leading energy density with the WattCycle 12V 628Ah Ultra Lithium Battery, engineered to deliver exceptional performance and reliability. Incorporating EV-grade A+ cells, a robust 300 A BMS with configurable over-current protection, and expandable 4 P × 4 S scalability for up to 128.61 kWh, this 12V 628Ah Ultra Lithium Battery sets a new benchmark in power storage. Protected by intelligent low-temperature cutoffs and backed by a 5 + 2 year warranty, it thrives in harsh environments while Bluetooth 5.0 monitoring ensures real-time visibility of voltage, state of charge, and temperature. With double the capacity of comparable units and an industry-leading 5,000–15,000 cycle lifespan, the WattCycle 12V 628Ah LiFePO4 battery delivers long-term value for the most demanding applications.

    Advanced Wireless Control

    Equipped with Bluetooth 5.0, the WattCycle APP transforms your smartphone into a command center for the 12V 628Ah lithium battery. With a few taps, you can remotely initiate or suspend discharge, verify system health, and monitor critical metrics—voltage, current draw, and cell temperature—in real time. Parameters such as the 300 A continuous discharge limit and peak over-current cutoff can be fine-tuned on the fly, ensuring your WattCycle 12V 628Ah LiFePO4 battery operates precisely to your requirements. This level of oversight delivers confidence and convenience, whether you’re managing an off-grid solar array, marine system, or RV power pack.

    Extreme-Environment Protection

    Built to withstand the harshest conditions, the WattCycle 12V 628Ah Ultra lithium battery employs intelligent thermal safeguards that automatically pause charging below 32 °F (0 °C) and only resume once ambient temperatures exceed 41 °F (5 °C). In even more severe cold, discharge is halted below –4 °F (–20 °C) to prevent cell damage. Once the environment returns to safe thresholds, the system seamlessly restores full functionality—ensuring your 12V 628Ah Ultra Lithium Battery delivers uninterrupted power whether you’re braving sub-zero winters or scorching summer heat.

    Decade-Long Backup Endurance

    EV grade A+ LiFePO4 calls have a longer lifespan, better-refined manufacturing, and contain more energy per cell. Engineered for unwavering reliability, the WattCycle 12V 628Ah lithium battery delivers over a decade of continuous backup power, ensuring mission-critical systems stay online through countless cycles. This exceptional longevity means your investment in the 12V 628Ah Ultra Lithium Battery pays dividends year after year, with minimal capacity fade and maximum uptime for residential, commercial, and industrial applications.


    Superior Performance vs. Lead‑Acid

    Unlike conventional lead‑acid designs, the WattCycle 12V 628Ah Ultra Lithium Battery is encased in UL94 V‑0 flame‑resistant ABS+PC housing and carries an IP65 ingress rating, delivering industry‑leading fire safety and protection against dust and water. This rugged enclosure means you can install it in harsh industrial settings, dusty warehouses, or aboard marine vessels with confidence—environments where traditional batteries often fail or require frequent maintenance. Coupled with the inherent maintenance‑free LiFePO4 chemistry, which eliminates watering and minimizes self‑discharge, this robust design lowers your total cost of ownership and guarantees reliable power delivery when you need it most.

    Modular High-Capacity Configuration

    Each WattCycle 12V 628Ah Ultra LiFePO4 battery stacked individual battery delivers 8038.4Wh of energy. For projects demanding even greater power, 16 batteries in 4P4S can create a 51.2V 2512Ah system that unleashes a colossal 128.61 kWh of energy. With a truly gigantic energy capacity, this system easily supports any energy demands. Whether you’re expanding a commercial backup system or building a residential microgrid, the 12V 628Ah Ultra Lithium Battery adapts without compromising reliability or performance.

    Versatile Fast-Charge Options

    Use the WattCycle 14.6 V 80 A charger specifically designed for LiFePO4 battery, which fully charges the battery in just 7.85 hours. With a faster charging rate than traditional lead-acid batteries it provides a better using experience. In addition, 3 other charging options, including solar panel,  alternator and generator, suit your different charging needs.

    Broad Application Spectrum

    The WattCycle 12V 628Ah lithium battery excels in a wide range of settings—from reliable home energy storage and remote off‑grid microgrids to demanding marine environments and long‑haul recreational vehicles. In critical infrastructure such as UPS backup systems and telecommunications sites, its consistent output and intelligent protection features minimize downtime and maintenance. Whether you’re powering a vacation cabin, outfitting a commercial solar array, or ensuring uninterrupted operation aboard a vessel, the 12V 628Ah Ultra Lithium Battery delivers the robust performance and dependability that modern applications require.

    Tech Specs

    Dimensions 18.9 X 14.25 X 9.53 inch | 480 X 362 X 242 mm
    Weight 153.99 lbs | 69.85 kg
    Standard/Maximum Continuous Charging 125.6A/300A
    Maximum Continuous Discharging 300A
    Over-current Discharge Protection 310A±10A
    Over-current Charge Protection 310A±10A
    Primary Protection Current Value 500A@20s
    Secondary Protection Current Value 1000A@5s
    Short-Circuir Current Protection Support
    Release Condition Cut Load
    Charging High Temperature Protection 140°F~158°F / 60°C~70°C
    Discharge High Temperature Protection 149°F~167°F / 65°C~75°C
    High Temperature Protection Release Condition Drop by 41°F~59°F / 5°C~15°C
    Charging Low Temperature Protection 23°F~41°F / -5°C~5°C
    Discharge Low Temperature Protection -13°F~5°F / -25°C~-15°C
    Low Temperature Protection Release Condition Rise by 41°F~59°F / 5°C~15°C
    Rated Voltage 12.8V
    Standard Charging Voltage 14.6V±0.2V
    Shipping Charging Voltage 12.8V~13.5V
    Shipping Capacity  50%
    Cycle Life 6000@80%DOD
    Self Discharge Rate <3%/Month
    Series & Parallel Connections 4 Parrallel(Max) 4 Series(Max)
    Communications Not Supported
    Case Material ABS+PC/UL94 V-0
    Storage Temperature  32°F~140°F/0°C~60°C
    Terminal Bolt Size M8
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Why so cheap?

These Mattress are backlogs of stock from distributors in our warehouse that have now reached their contract period and the products have not been disposed of in a timely manner. Our warehouse has the right to sell these stocks at a low price to reduce our losses.