Constant Current/Voltage DC-DC 5.5-30V To 0.5-30V Adjustable Automatic Step-Up Down Power Supply Module

$11.99
  Availability: In Stock
  Shipping: Free Airmail 
  Estimated Delivery: 
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  •   Shipping Methods

    Handling Time

    Before we can ship your order, we prepare your products, do strict quality-control tests and carefully package the items. The time it takes to prepare your items for shipping is separate from the delivery time. It usually takes 1-3 business days to ship out .

    Shipping Methods

    You can choose the preferred shipping method on the cart page during the checkout process. We offers 3 international shipping methods:

    1. Airmail – Free untracked economy shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    2. Airmail Registered – Tracked shipping via national postal services (HK Post, Singapore Post, China Post, PostNL, Swiss Post, Sweden Post, USPS, Royal Mail e.t.c.)
    3. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    Airmail and Airmail Registered Area Estimated Delivery Time
    United States, Canada 7-25 business days
    Australia, New Zealand, Singapore, United Arab Emirates 10-25 business days
    United Kingdom, France, Spain, Germany, Netherlands, Japan, Belgium, Denmark, Finland, Ireland, Norway, Portugal, Sweden, Switzerland 10-25 business days
    Italy, Brazil, Russia, South Africa 10-45 business days
    Other countries 10-35 business days
    Expedited Shipping 3-10 business days to Worldwide

    Note: If you choose an expedited shipping, please remember to leave a valid contact number, this is required for expedited shipping’s courier delivery.

  •  Returns & Refund

    Last updated October 05, 2022

    Returns

    If you are not completely satisfied with your purchase for any reason, you may return it to us for a full refund within 15 days from delivery date. All returned items must be in new and unused condition, with all original tags and labels attached.

    Return Process

    To return an item, please email our customer service at sales@alexnld.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging, and mail your return to the following address:

    Alex NLD
    Attn: Returns
    RMA #
    HaGiborim St 8
    Tiberias, 14388
    Israel

    Please note, you will be responsible for the return shipping charges. We strongly recommend that you use a trackable method to mail your return.

    All customers should contact us and obtain Return Merchandise Authorization (RMA) number before sending anything to us. We will not be responsible for returned item(s) without notifying us in advance.

    Refunds

    After receiving your return and inspecting the condition of your item, we will process your refund to the credit / debit card or PayPal account which was used to place the original order.

    Please allow at least seven (7) days from the receipt of your item to process your refund. Refunds may take 1-2 billing cycles to appear on your credit card statement, depending on your credit card company. We will notify you by email when your refund has been processed.

    Exceptions

    If an item is found damaged or defective on receipt, we kindly ask you to contact us within 15 days from the delivery date to arrange a refund or exchange without physical return of the item.

    Please provide us with following:

    1. Photos of the front and back sides of the packaging box;
    2. A photo, video or screenshot of the defective item or the defective part of the parcel.

    Our customer service team will communicate with you to arrange a refund or reshipment without physical return of the item.

    Warranty & Repair service

    If any of the items you have purchased from us is found defective within 1 year from receipt, you are entitled to a repair under warranty. Please kindly provide us with evidence photos or videos of the defective item. After providing such information to our Customer Service team  and the problem is acknowledged, you can send the items back to us for a repair.

    Note:  Please be aware, we do not cover the cost of the returns fees in  warranty & repair service.

    Order Cancellation

    If you want to cancel an order within 24 hours from confirmation of the payment, you will be entitled to a full refund. It is still possible to cancel an order after 24 hours, provided that it has not yet been shipped. If an order has been shipped, it’s impossible for us to cancel or modify it anymore. If you still want a refund, you required to return the item on it’s arrival.

    Questions

    If you have any questions concerning our return policy, please contact us at:

    +972 054-536-2888
    sales@alexnld.com

     


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?Constant current/voltage DC-DC 5.5-30V To 0.5-30V Adjustable Automatic Step-Up Down  Power Supply Module For Solar Lithium Battery Charging

Introduction:

  • 4A step-up and step-down module (constant voltage constant current version).
  • wide voltage input 5.5-30V, wide voltage output 0.5-30V, both boost can also buck, such as you adjust the output voltage of 18V, then the input voltage between 5.5-30V casually change, will be constant output 18V.
  • Used as a general step-up and step-down module with overcurrent protection capability.
  • Used as a battery charger.
  • Used as a high power LED constant current drive module.
  • High power, high efficiency, better performance than XL6009 / LM2577 program.  
  • Iron silico aluminum magnetic ring inductance, high efficiency.
  • Constant current mode without electric whistle.
  • You can set the current size, used to limit the output current, constant current drive, battery charging lamp occasions.
  • Comes with the output anti-backwash function, to the battery charge without additional anti-flooding diode.

Product parameters:

  • Input voltage: 5-30V.
  • Output voltage: 0.5-30V.
  • Output current: to long-term stability in the 3A, to strengthen the heat can reach 4A.
  • Output power: natural cooling 35W, strengthen the heat 60W.
  • Conversion efficiency: 88% or so.
  • Short circuit protection: Yes.
  • Operating frequency: 180KHZ.
  • Size: 65 * 32 * 21mm(L* W* H).

Note: This module in more than 3A, 35W use, please strengthen the heat!
Precautions:

  • The module input IN- is disabled from the output OUT-, otherwise the constant current function is disabled.
  • Make sure that the power time of the power supply is greater than the power required for the output load!
  • Module input No input anti-reverse function, please pay attention to the direction of power supply positive and negative.
  • Input voltage to 8V or more, the module can the maximum power output, when the input voltage is 5V, the output power of about 15W. Module current value of the maximum 4A, the premise is limited by the maximum output power, such as the output 17V, the current should not be greater than 2A.
  • Module with output short circuit protection, short circuit protection module automatically shut down the output, to re-power the module can be restored, if your power supply without output current limit protection, it is recommended in the module input front-end fuse, improve safety factor.
  • The module has input undervoltage protection function, the default is about 4.2V, below this value, it will automatically disconnect the output, to re-power the module can be restored (note that the module port voltage, when the input current is relatively large , Do not ignore the input voltage on the wire).
  • The module contains three indicators, constant voltage constant current status indication (red, constant current mode light), charge indication (blue), full of instructions (green, turn the lamp current is 0.1 times the set current).

Package Included:

  • 1 x DC-DC Module

NO Retail Box. Packed Safely in Bubble Bag.

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