Dual DC Current 12V/24V Solar Controller LCD PWM Photovoltaic Power Generation Controller (20A)

$24.99
  Availability: In Stock
  Shipping: 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 2 international shipping methods:

    1. 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.)
    2. Expedited Shipping – Express shipping with courier delivery (DHL, UPS, FedEx, TNT)

    Delivery Time

    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: April 2, 2025

    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.

    Damaged or Defective Items

    If an item is found damaged or defective upon receipt, please contact us within 15 days of the delivery date to arrange a refund or exchange, without the need to return the item physically.

    Please provide the following:

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

    Our customer service team will review your case and arrange a refund or reshipment — no return required.

    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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Parameter
1. System voltage: 12V/24V automatic adaptation
2. Rated charging current: 20A
3. Rated discharge current: 10A
4. Photovoltaic voltage: 23V for 12V battery; 46V for 24V battery
5. Boost charging voltage: 14.4V
6. Float voltage: 13.7V (default, adjustable)
7. Discharge cut-off voltage: 10.7V (default value, adjustable)
8. Discharge recovery voltage: 12.6V (default value, adjustable)
9. Charging recovery voltage: 13V
10. Photovoltaic panel: 8V for light-controlled light-on threshold (the light-controlled light has a delay)
11. Photovoltaic panel: 8V for light-controlled turn-off threshold (there is a delay for light-control turn-off)
12. USB output: 2 USB outputs, 5V/2.5A
13. Standby current: less than 10mA
14. Working temperature: -35 to 60 degrees Celsius
15. Size: 125x112x34mm
16. Weight: 179g

Features
1. Adopt industrial-grade main control chip
2. Large-screen LCD display; charging and discharging current display; cumulative power generation and discharge power query; temperature display; light control + delay control; adjustable charging and discharging parameters; with power-off memory and other functions
3. Dual USB output, current up to 2.5A, support Apple mobile phone charging
4. Complete 3-stage charging management
5. Built-in over-current, short-circuit protection, open-circuit protection, and reverse connection protection, all of which are self-recovery and will not damage the controller
6. Anti-backflow circuit, ultra-low heat generation.

System connection
1. Connect the positive and negative poles of the battery to the controller as shown in the figure, and the controller will automatically detect the battery voltage
2. Connect the positive and negative poles of the load to the controller according to the diagram, and be careful not to reverse them
3. Connect the solar panel to the controller according to the picture

Safe use advice
1. The controller is 12V/24V automatic recognition, when installing for the first time, please make sure the battery has enough voltage so that the controller can recognize the correct battery type
2. Install the controller as close to the battery as possible to avoid voltage drop caused by too long wires and affect normal voltage judgment
3. This controller is only suitable for various lead-acid batteries (including open, sealed, gel, etc.)
4. This controller can only use photovoltaic panels as the charging source, do not use DC or other power sources as the charging source
5. The controller will generate heat during operation, please pay attention to install the controller on a flat and well-ventilated surface

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Product ID: 20427577 Category: Color: 20A
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