C2021 20000mAh High-Capacity Fast Charging Power Bank | OEM/ODM Factory with 4 Output Ports

Customization: Customized logo

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Key Features & Technical Advantages

  • Massive 20000mAh Capacity: Built with dual premium lithium-polymer cells (126280*2) for extended usage and reliable performance

  • Quadruple Output Ports: 2× USB-C + 2× USB-A ports support charging multiple devices simultaneously

  • Fast Charging Technology: Supports Power Delivery (PD) and Quick Charge (QC) protocols with up to 20W output

  • Dual Input Design: Two USB-C ports for flexible charging options with 18W fast input capability

  • Advanced Safety Protection: Multiple protection systems including over-charge, over-discharge, short-circuit, and temperature control

  • Compact & Portable: Despite large capacity, maintains manageable dimensions (108×70.5×28.7mm) for easy portability

Pricing & Order Information

  • Unit Price Range: $9.15 – 11.00 USD (depending on order quantity and customization)

  • Volume Discounts: Significant discounts available for large quantity orders

  • MOQ: 500 pieces (negotiable for initial orders)

  • Sample Availability: Samples provided within 5-7 working days

  • Production Lead Time: 25-30 days after sample confirmation

  • Payment Terms: T/T, LC, Western Union, PayPal supported

Ready to Source High-Capacity Power Banks?
Contact our sales team today for wholesale pricing, custom samples, and OEM solutions!
Let us help you build your brand with reliable, high-performance power banks that meet your customers’ needs.

Description

High-Capacity Power Solution – Direct from Manufacturing Factory

As an experienced power bank manufacturer, we present the C2021 20000mAh high-capacity power bank, engineered to meet the demanding needs of modern mobile users. Our complete in-house production ensures strict quality control and comprehensive customization options at competitive factory-direct prices.

This powerful 20000mAh power bank features advanced dual lithium-polymer cells and four output ports, making it an ideal charging solution for multiple devices simultaneously. Perfect for distributors, retailers, and brands looking for a reliable, high-capacity power bank with extensive customization possibilities.

Detailed Specifications

Parameter Specification
Model C2021
Rated Capacity 20000mAh
Battery Type Dual Li-Polymer Cells (126280*2)
Input Ports USB-C × 2
Input Power 5V/3A, 9V/2A, 12V/1.5A (Max 18W per port)
Output Ports USB-C × 2 + USB-A × 2
USB-C Output 5V/3A, 9V/2.22A, 12V/1.67A
USB-A Output 4.5V/5A, 5V/4.5A, 5V/3A, 9V/2A, 10V/2.25A, 12V/1.5A
Total Output 5V/3A
Dimensions 108 × 70.5 × 28.7 mm
Weight 316g
Shell Material ABS (Flame Retardant Grade)
Standard Colors Black, White

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Our OEM/ODM Customization Services

We provide complete customization solutions to match your brand requirements:

  • Color Customization: Available in various colors with Pantone matching system

  • Logo Application:

    • Color Printing: $1/side

    • Silk Screen Printing: $0.3

    • Laser Engraving: $0.2

  • Packaging Options: Neutral packaging or custom printed boxes

  • Technical Modifications: Custom output parameters, additional features, or special requirements

  • Accessory Bundling: Custom cable combinations and accessory packages

Why Choose Our Factory?

  • 15+ Years Manufacturing Experience in power banks and mobile accessories

  • In-House R&D Department for continuous product innovation and improvement

  • Comprehensive Quality Assurance with full testing including cycle testing, aging tests, and safety certifications

  • International Certifications including CE, RoHS, FCC, PSE, KC available

  • Competitive Pricing from $9.15-11 USD with volume discounts

  • Flexible MOQ suitable for both startups and established brands

  • Efficient Production with 25-30 day lead times after sample confirmation

  • Global Logistics Support with reliable shipping partners worldwide

Pricing & Order Information

  • Unit Price Range: $9.15 – 11.00 USD (depending on order quantity and customization)

  • Volume Discounts: Significant discounts available for large quantity orders

  • MOQ: 500 pieces (negotiable for initial orders)

  • Sample Availability: Samples provided within 5-7 working days

  • Production Lead Time: 25-30 days after sample confirmation

  • Payment Terms: T/T, LC, Western Union, PayPal supported

Packaging & Shipping

  • Standard Packaging: Neutral white box or custom packaging available

  • Accessories Included: 4-core data cable included standard

  • Carton Specifications: Customizable carton sizes and packaging designs

  • Shipping Options: By air, by sea, or express delivery (DHL, FedEx, UPS)

Quality Assurance

Every C2021 power bank undergoes rigorous testing procedures:

  • 72-hour continuous aging test

  • Input/output power accuracy verification

  • Cycle life testing

  • Temperature and environmental testing

  • Drop test and transportation simulation

  • Safety certification compliance testing

 


Ready to Source High-Capacity Power Banks?
Contact our sales team today for wholesale pricing, custom samples, and OEM solutions!
Let us help you build your brand with reliable, high-performance power banks that meet your customers’ needs.

Brand

GCC

OEM

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FAQ

1. who are we?
Manufacturer – China Factory Direct Wholesale.GCC Electronic are based in Shenzhen, China, start from 2016, sell to Domestic Market(5%),Western Europe(45%),North America(40%),Southeast Asia(10%). There are total about 11-50 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Cell Phone Holder, Wireless Charger ,Cable, Headphone/Earphone, Bluetooth Speaker and other relative products

4. why should you buy from us not from other suppliers?
GCC Craftsman’s spirit, Strict quality control system, CE, Rohs, FCC certification, Fast lead time, 100% customer satisfaction guarantee

5. what services can we provide?
Accepted Delivery Terms: FOB,CIF,EXW,Express Delivery;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,MoneyGram,PayPal,Western Union,Cash;
Language Spoken:English,Chinese,Japanese