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 |
Our OEM/ODM Customization Services
We provide complete customization solutions to match your brand requirements:
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Color Customization: Available in various colors with Pantone matching system
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Logo Application:
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Color Printing: $1/side
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Silk Screen Printing: $0.3
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Laser Engraving: $0.2
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Packaging Options: Neutral packaging or custom printed boxes
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Technical Modifications: Custom output parameters, additional features, or special requirements
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Accessory Bundling: Custom cable combinations and accessory packages
Why Choose Our Factory?
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15+ Years Manufacturing Experience in power banks and mobile accessories
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In-House R&D Department for continuous product innovation and improvement
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Comprehensive Quality Assurance with full testing including cycle testing, aging tests, and safety certifications
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International Certifications including CE, RoHS, FCC, PSE, KC available
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Competitive Pricing from $9.15-11 USD with volume discounts
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Flexible MOQ suitable for both startups and established brands
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Efficient Production with 25-30 day lead times after sample confirmation
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Global Logistics Support with reliable shipping partners worldwide
Pricing & Order Information
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Unit Price Range: $9.15 – 11.00 USD (depending on order quantity and customization)
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Volume Discounts: Significant discounts available for large quantity orders
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MOQ: 500 pieces (negotiable for initial orders)
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Sample Availability: Samples provided within 5-7 working days
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Production Lead Time: 25-30 days after sample confirmation
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Payment Terms: T/T, LC, Western Union, PayPal supported
Packaging & Shipping
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Standard Packaging: Neutral white box or custom packaging available
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Accessories Included: 4-core data cable included standard
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Carton Specifications: Customizable carton sizes and packaging designs
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Shipping Options: By air, by sea, or express delivery (DHL, FedEx, UPS)
Quality Assurance
Every C2021 power bank undergoes rigorous testing procedures:
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72-hour continuous aging test
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Input/output power accuracy verification
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Cycle life testing
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Temperature and environmental testing
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Drop test and transportation simulation
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Safety certification compliance testing


















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