Description
J803 Outdoor Power Bank 30000mAh Overview
The YULIDA J803 is a 30000mAh outdoor-oriented power bank with two Type-C input connections, Type-C2 output, two USB-A outputs, four built-in cable outputs and an LED light. Its multi-interface layout supports OEM programs that need several connector options, while output combinations and lighting performance should be confirmed on the approved sample.
Verified J803 Specifications
| Item No. | J803 |
| Rated battery capacity | 30000mAh at 3.85V |
| USB-C1 input | 5V/2A, 9V/2A, 12V/1.5A |
| USB-C2 input | 5V/3A, 9V/2A, 12V/1.5A |
| USB-C2 output | 5V/3A, 9V/2.22A, 12V/1.67A, 10V/2.25A |
| USB-A1 output | 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A |
| USB-A2 output | 5V/3A |
| USB-A cable output | 5V/2A |
| USB-C cable output | 5V/3A, 9V/2.22A, 12V/1.67A, 10V/2.25A |
| Micro cable output | 5V/2A |
| Built-in Lightning cable output | 5V/2.4A |
| Dimensions | 139.5 × 69 × 46mm |
| MOQ | 500 pieces |
USB-C1 Input and USB-C2 Bidirectional Functions
USB-C1 is listed only as an input. USB-C2 has both input and output profiles. Product manuals and sales material should distinguish their roles so buyers do not assume both Type-C connections provide output.
Output Profiles up to 22.5W
USB-C2, USB-A1 and the built-in USB-C cable each include a 10V/2.25A operating point, equivalent to 22.5W. Named protocol support, combined total output and device-specific charging speed are not stated and require sample validation.
Four Built-In Cable Outputs
The published configuration includes USB-A and Micro cable outputs at 5V/2A, Lightning at 5V/2.4A and a multi-profile USB-C cable. Buyers should verify connector compliance, cable routing, bend durability, pull strength, voltage drop and simultaneous-use behavior for the production version.
30000mAh Capacity and Energy Documentation
Multiplying 30000mAh by the stated 3.85V gives a nominal calculation of 115.5Wh. This calculation does not replace the final rated-energy label, cell specification or transport documentation. Request the approved Wh value, rated output capacity and battery records before publishing runtime or travel claims.
LED Light Performance Boundaries
An integrated LED light is confirmed, but lumen output, beam pattern, operating modes, runtime and power consumption are not published. Request lighting and runtime test data before making camping-light or emergency-light performance claims.
Multi-Device Output Validation
Multiple ports and cables do not prove that every output combination works at its individual maximum. Buyers should request the simultaneous-output matrix, total shared-power limit, priority logic, temperature-rise data and protection behavior for their intended use cases.
OEM, ODM and MOQ Planning
Standard OEM logo and packaging programs start at 500 pieces. Light color, documentation or packaging changes can start at 1,000 pieces, subject to feasibility. LED, cable, battery, PCBA, firmware, thermal or structural ODM work generally starts at 2,000 pieces.








Frequently Asked Questions
What specifications are confirmed for the J803?
The published specification lists 30000mAh at 3.85V, dimensions of 139.5 × 69 × 46mm, two Type-C inputs, Type-C2 output, two USB-A outputs, four built-in cable outputs and an LED light.
Can it charge several devices at the same time?
Multiple outputs are listed, but the supported combinations and total shared-power limit are not published. Confirm them on the approved sample.
What does 30000mAh at 3.85V mean for energy?
It gives a nominal calculation of 115.5Wh. Use the final rated-energy label and production documentation for transport or compliance decisions.
What is confirmed about the LED light?
An LED light is listed, but lumen output, modes, runtime and power consumption are not stated.
Which built-in cable outputs are listed?
The specification lists USB-A, USB-C, Micro and Lightning cable outputs with their respective voltage and current profiles.
How long does the J803 take to recharge?
No verified recharge time is published. It depends on the approved battery pack, charger, cable, input profile, temperature and charging strategy.
What are the OEM and ODM order levels?
Standard OEM starts at 500 pieces, light customization can start at 1,000 pieces, and deeper ODM work generally starts at 2,000 pieces.






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