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55W Power Bank: Professional Fast Charging with Integrated Retractable Cable

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ESC

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Dec 18 2025

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In the modern B2B landscape, staying connected is no longer a matter of convenience; it is a critical operational requirement. Whether it’s a field engineer performing on-site diagnostics or a corporate executive traveling between global regions, the tools they carry must be efficient, reliable, and clutter-free. The ESC-X017 55W Power Bank is engineered specifically to meet these professional demands.

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By merging high-wattage 55W Power Delivery (PD) with an integrated retractable cable system, this unit eliminates the most common failure point in mobile power: the lost or damaged charging cable. This all-in-one powerhouse supports a full range of electronics—from smartphones and wearables to high-demand laptops—ensuring that professional users never have to compromise on speed or portability.


🏗️ 2. Key Features and Performance Benefits

The ESC-X017 isn't just a battery; it’s a sophisticated power management tool. Below is a breakdown of the unique selling points that make this unit a market leader in the mid-to-high-end segment.

Product Performance & Features Table

Feature Technical Specification Operational Benefit for Users
Integrated Cable 65CM Retractable Cable (Tested for 10,000+ pulls) Eliminates cable clutter; guaranteed durability with a 1-year warranty.
Visual Interface TFT LCD Display (Real-time Power & Voltage) Professional monitoring of charging speeds and precise battery levels.
High Output 55W PD Fast Charging Capable of charging laptops, tablets, and drones at near-wall-outlet speeds.
Wearable Support Built-in 3W Watch Wireless Charger All-in-one solution for Galaxy Watch or Apple Watch without extra docks.
Multi-Port Charging 1x USB-A + 1x Type-C + Integrated Cable Charge up to 3 devices simultaneously without significant thermal throttling.
Shell Integrity Waterproof + ABS Fire-resistant material Rugged durability for outdoor fieldwork and industrial environments.
Cell Technology High-density 21700 Battery Cells Maximum energy density in a compact, pocket-friendly form factor.

⚙️ 3. Technical Specifications and Key Parameters

The internal engineering of the ESC-X017 focuses on "High-Efficiency Power Distribution." By utilizing 21700 cells (the same standard used in electric vehicles), the unit maintains a stable voltage curve even under heavy 55W loads.

Detailed Input & Output Specifications

  • Model: ECS-X017

  • Capacity: 10,000mAh (Optimized for air travel compliance)

  • Input (Recharging the Power Bank):

    • Type-C1 Port: 5V/3A, 9V/3A, 12V/2.5A, 15V/2A, 20V/1.5A (45W Max Fast Input)

    • Type-C2 Integrated Cable: 5V/3A, 9V/3A, 12V/2.5A, 15V/2A, 20V/1.5A (45W Max Fast Input)

  • Output (Charging Your Devices):

    • Type-C Port: Up to 20V/2.75A (55W Max)

    • Integrated Type-C Cable: Up to 20V/2.75A (55W Max)

    • USB-A Port: Up to 12V/2.5A (Supports SCP/VOOC protocols)

    • Wireless Watch Output: 3W

  • Dimensions: $127 \times 54 \times 28$ mm (Ultra-compact pocket design)

  • Total Output (MAX): Intelligent distribution across all ports up to 55W.


🛡️ 4. Quality Control and Manufacturing Excellence

For B2B clients, quality assurance is paramount. The ESC-X017 is manufactured in facilities that adhere to ISO 9001 standards and strictly comply with the new China National Standard (GB 4943.1-2022).

Unlike entry-level chargers that use generic lithium-polymer cells, we exclusively utilize battery cells from publicly listed manufacturers. This ensures:

  1. Thermal Stability: Advanced separators prevent "thermal runaway" even during high-wattage 55W discharge.

  2. Safety Compliance: The cells are tested for puncture and high-pressure resilience. Under extreme stress, our cells are designed to swell rather than ignite.

  3. Longevity: Rated for hundreds of cycles with minimal capacity degradation, ensuring your brand is associated with long-term reliability.


🤝 5. OEM Customization and B2B Services

We provide a comprehensive "End-to-End" solution for brand owners and wholesalers. Whether you are looking to launch a new product line or provide branded gifts for a corporate fleet, our engineering team is ready to assist.

  • Custom Branding: High-fidelity laser etching or silk-screen printing for your company logo.

  • Cable Customization: Options for Type-C, Lightning, or Micro-USB retractable cables to match your target market’s devices.

  • Packaging Design: Bespoke retail packaging or industrial bulk-packing for large-scale deployments.

  • Firmware Optimization: We can customize the PD handshake protocols to better suit specific industrial hardware or proprietary tablets.


✈️ 6. Procurement and Supply Chain Logistics

With over 15 years of industry experience, our supply chain is optimized for speed, reliability, and competitive pricing.

  • Minimum Order Quantity (MOQ): We support small businesses and large enterprises with MOQs starting at just 10 units.

  • Lead Times: * First Orders: 30-35 Days (Includes initial customization setup).

    • Massive/Repeat Orders: 20-25 Days.

  • Global Shipping: Full support for Air Shipment (DHL/Fedex/UPS) for rapid restocking, and Sea/Train/Car Shipment for cost-effective bulk procurement.

  • Sample Program: Free samples are available for qualified B2B partners to test quality and performance prior to mass production.


❓ 7. Frequently Asked Questions (FAQ)

Can this power bank charge a laptop?

Yes. The 55W output is specifically designed to charge ultrabooks and laptops that support USB-C Power Delivery (such as the MacBook Air, Dell XPS, and various Chromebooks).

How durable is the retractable cable?

The cable utilizes a high-quality spring-loaded mechanism and reinforced internal wiring, tested to withstand over 10,000 retraction cycles. We back this with a one-year warranty.

Is it safe to take on an airplane?

Absolutely. At 10,000mAh (approx. 37-38.5Wh), it is well within the 100Wh limit set by the FAA and IATA for carry-on luggage.

What safety protections are built-in?

The ESC-X017 features an intelligent chipset that provides protection against overcharge, over-current, short-circuit, and high-temperature thermal throttling.


📞 8. Call to Action

Future-proof your mobile power solutions today. The ESC-X017 55W Power Bank is the perfect intersection of high-speed performance and minimalist convenience.

Whether you are looking for an OEM partner or a reliable wholesale supplier, we invite you to experience the difference that 15 years of engineering expertise makes.

Contact us now for a customized quote or to request your free test sample. Let’s build a long-term strategic partnership focused on quality and innovation.

Shenzhen ESC is a leading power bank manufacturer with over 10 years of production experience. Specializing in fast-charging power banks and chargers, we feature an R&D team with listed company expertise and proprietary chip technology. Our high-power products deliver multi-brand fast charging compatibility without overheating.

Certified for quality and safety, our products are exported to dozens of countries worldwide.

Interested in OEM/ODM partnerships? Contact us today!
WhatsApp/WeChat: +86 18576695768
Email: amy@escpowerbank.com
YouTube: https://www.youtube.com/@escpowerbank

We look forward to powering your business!

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EXPERT CONTRIBUTOR

Abby Wang

Founder of ESC | 13+ Years in Mobile Accessories

With over 13 years of deep-rooted expertise in the mobile accessories industry, I have dedicated my career to more than just selling products—I bridge the gap between complex technology and evolving market needs. In 2022, I founded Shenzhen ESC Technology and launched ESC, a brand built on the principle: "Always On. Value Of Limitless Time." My journey includes partnering with 150+ major clients across 50 countries, specializing in high-stakes negotiations and long-term account management. What sets my approach apart is a rare blend of technical proficiency and market intuition. At ESC, we don't just meet demand; we anticipate it. Our mission is to lead the market by creating value-driven solutions that empower our global partners to stay ahead in a fast-paced digital landscape. Let's connect to power the future of mobile energy.
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