Description
| Item No.: | J06 Power Bank |
| Capacity: | 20000mAh |
| Type-C1 Input: | 5V/2A |
| Type-C2 Output: | 5V/2A |
| USB-A Output: | 5V/2A |
| Size: | 142 x 68.1 x 28mm |
J06 Power Bank is a slim multi-port power bank designed for reliable everyday backup power and simple 5V/2A charging.








Frequently Asked Questions: J06 Slim Multi-Port Power Bank
1. Why does the J06 use 5V/2A (10W) charging instead of fast charging protocols like PD or QC?
The J06 is designed as a reliable, cost-effective everyday backup power bank rather than a fast-charging solution. The 5V/2A output provides stable, universal charging compatible with virtually any USB device without requiring PD or QC protocol negotiation. This simplifies the charging experience — every port delivers consistent 10W output — and reduces internal complexity, heat generation, and cost. For buyers who need fast charging, YULIDA offers dedicated PD/QC models like the J721 (100W) or J701K (65W).
2. How slim is the J06 at 142×68.1x28mm and what makes it practical for everyday carry?
The J06’s 28mm thickness makes it notably slimmer than typical 20000mAh power banks, which average 35-45mm thick. At 142×68.1mm, the footprint is similar to a large smartphone, and the 28mm thickness allows it to fit flat in a laptop bag, backpack sleeve, or jacket pocket. The slim profile is achieved through a flat cell layout rather than cylindrical cells. The multi-port design (dual Type-C + USB-A) provides charging flexibility without the bulk of built-in cables.
3. What are the dual Type-C ports for on the J06 and can they be used simultaneously?
The J06 has two Type-C ports: Type-C1 is input-only (5V/2A) for recharging the power bank, and Type-C2 is output-only (5V/2A) for charging devices. This separation simplifies usage — no confusion about which port does what. Both Type-C ports and the USB-A port can be active simultaneously, allowing up to 3 devices to charge at once, each receiving 5V/2A. The dedicated input port means you can recharge the power bank while simultaneously charging devices through Type-C2 and USB-A.
4. How many phone charges does the 20000mAh capacity provide at 5V/2A output?
The 20000mAh capacity at 3.85V provides approximately 13000mAh of usable output at 5V after conversion losses. This translates to approximately 3-4 full charges for most modern smartphones (iPhone 15: ~3.5 charges, Samsung Galaxy S24: ~3 charges, Google Pixel 8: ~3.5 charges). The 5V/2A output speed means a full phone charge takes approximately 2-2.5 hours per device. For daily use, the J06 provides reliable multi-day backup without fast charging complexity.
5. Is the J06 a good choice for charging multiple low-power devices like earbuds and smartwatches?
Yes, the J06 is excellent for charging multiple low-power devices. The 5V/2A output is ideal for wireless earbuds, smartwatches, fitness trackers, Bluetooth headphones, and other accessories that do not support fast charging protocols. Many of these devices only accept 5V/1A or 5V/0.5A input, so the J06’s standard output is perfectly matched. The three available ports (2x Type-C, 1x USB-A) allow simultaneous charging of three accessories, making it a practical charging hub for a desk or nightstand.
6. How long does it take to fully recharge the J06’s 20000mAh battery?
The J06 recharges through Type-C1 at 5V/2A (10W). A full recharge from empty takes approximately 10-12 hours. This is slower than fast-charging power banks due to the 10W input limit. For practical daily use, we recommend overnight charging — plug in the J06 before bed and it will be fully charged by morning. The 20000mAh capacity means you only need to recharge every 3-4 days with typical phone-charging usage.
7. What OEM customization options make the J06 attractive for budget-conscious B2B buyers?
The J06 is positioned as a value-oriented power bank ideal for bulk B2B purchases, promotional giveaways, educational institutions, and retail entry-level segments. OEM options include custom logo printing on the front panel, standard shell colors (white, black, blue), branded packaging, and optional capacity labeling. The simplified 5V/2A design reduces cost while maintaining reliable 20000mAh capacity. MOQ is 500 units, with significant volume discounts available for orders of 2000+ units.






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