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China Factory USB Chargers Suppliers - Lightweight & Portable 12W, 20W, 7.5W External Power Supplies
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China Factory USB Chargers Suppliers - Lightweight & Portable 12W, 20W, 7.5W External Power Supplies

As a leading China factory and supplier of lightweight and portable USB chargers, we pride ourselves on delivering high-quality charging solutions. Our range of external power supply USB chargers includes top models like the DST12N1 12W series, DST200 20W PD series, DYS806 7.5W USB series, and DYS810 12.27W USB series, among others. Each charger is designed for efficiency and convenience, making them perfect for on-the-go charging needs.

    Energy storage system

    Product specification

    OUTPUT voltage & Current 5V3A/9V 2.22A/12V 1.67A
    Power(Max.) 20W
    Ripple & noise ≤200 mV
    Voltage tolerance ±5%
    standby power <0.1W
    INPUT Voltage Range 100-240VAC
    Frequency Range 50-60Hz
    ENVIRONMENT Operation Temp. 0℃ to +25℃
    storage Temp. -20℃ to +70℃
    Operation HUM 10%-90%
    SAFETY Safety certificates 6236861558
    CB, cULus, FCC, CE
    OTHERS MTBF >50,000 hours at 80% load and 25℃
    Dimension 46.5X39X23mm
    Energy storage system

    Specification

    1. The range of input voltage is from 90Vac to 264Vac with a single phase.

    2. Inrush Current (cold start): The inrush current will not exceed 80A at 100-240Vac input and Max load for a cold start at 25℃.

    3. While input 115Vac and 230Vac:
    • 5V/3A PCB end the average efficiency is more than 81.39%.
    • 9V/2.22A PCB end the average efficiency is more than 85.47%.
    • 12V/1.67 PCB end the average efficiency is more than 85.48%.
    The test point is at 25%, 50%, 75% and 100% of max load respectively.

    4. While input 115Vac or 230Vac and the output is no load, the input power loss must be less than 0.1W.

    5. Export protocol: Type-C USB. Support USB Power Delivery (PD) 2.0 and 3.0 (PD3.0 protocol): 5V3A / 9V2.22A / 12V1.67A. Support Quick Charge 2.0/3.0, FCP, AFC, Apple 2.4A, DCP, Samsung-5V-2A.

    6. Turn - on Delay Time: 3S max. @ 100 Vac to 240 Vac input & Full load.

    7. Hold-up Time: 5mS min. @ Full load & 100Vac/60Hz input turn off at worst case.

    8. Capacitance Load: While input 100~240Vac and capacitance load is 2000uF, the adapter can turn on normally and the output is in the rated range.

    9. Output Overshoot / Undershoot: 10% max. When the power on or off.

    10. Output Load Transient Response: the output shall not exceed 10% of the nominal output voltage, load fluctuation: from 20% to 80%, R/S: 0.5A/uS, frequency: 100Hz duration and 8mS at 80%.

    11. Over Current Protection: Over Current Point Limited: 5V:3-3.9A, 9V:2.22-3.33A, 12V:1.67-2.6A. The output shall hiccup when the over currents applied to the output rail, and shall be self-recovery when the fault condition is removed.

    12. Short Circuit Protection: The input power shall decrease when the output rail short, the power supply shall no damage, and shall be self-recovery when the fault condition is removed.

    13. Over Voltage Protection: The power supply shall protection when the output over voltage, The product overvoltage protection is ≤25V.

    14. Drop in: Height: 1m; the product should be fell off on the plank with the thickness of at least 53mm, and the plank should be put on the cement ground or on the ground without flexibility. Two times on each side, in all 12 times.

    15. Plug-in test: Product loading testing machine, pairing interface for a total of 10000 times of insertion force ≤ 20N, pulling output ≥5N, insertion and pulling out for 1 time Type-C, USB: 5000 times each, 10000 times in total. After the test, the appearance, safety, structure and function are normal, and the USB pullout power is ≥5N.

    16. EMI Standards/EMI: FCC Part15 class B, EN55032, GB/T9254.

    17. EMS standards/EMS: EN55035.

    18. Safety According with: UL62368-1, CSA C22.2 NO.62368-1, IEC62368-1, EN62368-1, AS/NZS 62368.1, GB4943.1.

    19. Dielectric Strength(Hi-pot): Primary to Secondary: 3000VAC / 5mAMax / 60second (3 seconds for mass production).

    20. Leakage Current: 0.25mAmax. at 264Vac / 50Hz.

    21. Insulation Resistance: 50MΩ min. at primary to secondary add 500Vdc test voltage.

    22. Nontropical Altitude: 2000m.

    ELITE

    Why select us?

    20W Series External Power Supplies USB Chargers2
    • Our power adapters and other power products are widely used in consumer electronics, home appliances, office equipment, medical equipment, industrial equipment, transportation, photography and video equipment, outdoor and emergency equipment, power tools, and other products.
    • Welcome your visit to us at any time.
    • We use all kinds of equipment to carry out tests like ESD, EMC, lightning surge, temperature rise, mechanical plug tests, IPXX waterproof tests etc.
    • Service: Competitive Price, Free Sample, 25 to 40 Working Days Lead Time. It depends on order quantity and the order time.
    • Reliable: Completely certificated.
    FAQ

    Frequently Asked Questions

    What is the maximum power output and efficiency of the adapter?
    The adapter features a maximum output power of 20W. Under 115Vac and 230Vac input, the average efficiency is over 81.39% for 5V/3A, over 85.47% for 9V/2.22A, and over 85.48% for 12V/1.67A at the PCB end.
    Which fast charging protocols are supported by the Type-C interface?
    The Type-C interface supports USB Power Delivery (PD) 2.0 and 3.0 with outputs of 5V3A, 9V2.22A, and 12V1.67A. It also supports Quick Charge 2.0/3.0, FCP, AFC, Apple 2.4A, DCP, and Samsung-5V-2A.
    What safety certifications and standards does this power adapter meet?
    The product is fully certified with CB, cULus, FCC, and CE. It complies with safety standards including UL62368-1, CSA C22.2 NO.62368-1, IEC62368-1, EN62368-1, AS/NZS 62368.1, and GB4943.1.
    What protective features are built into the power supply?
    It comes built-in with Over Current Protection (hiccup mode with self-recovery), Short Circuit Protection (self-recovery without damage), and Over Voltage Protection (limited to ≤25V).
    What are the environmental and operational limits of the device?
    The adapter operates within a temperature range of 0℃ to +25℃ and 10%-90% humidity. It can be stored safely between -20℃ and +70℃, and is rated for nontropical altitudes up to 2000m.
    What is the expected lifespan (MTBF) and build quality of this product?
    The MTBF (Mean Time Between Failures) is rated at over 50,000 hours at 80% load and 25℃. Additionally, the unit passes drop-test standards (1m height onto a 53mm plank, 12 times) and USB plug-in tests up to 10,000 cycles.