* Estimated delivery times start from the date of shipment, excluding processing time.
* Actual delivery times may vary due to holidays, weather conditions, or customs delays.
Return items will be accepted within 40 days when is the date of receiving the goods. Customized items cannot be returned or exchanged. Items bought with an e-gift card are exchangeable only; refunds are not applicable.
Free Gift
Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.
Shipping Policy
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.
1. Return & Exchange Policy
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side.Final sales items or free gifts are not acceptable for a return.To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier. We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom
color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +8619359849471
2.Refund Policy
You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment.Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +8619359849471
2. Numerical control adjustment, precise and fast, step-down output, output voltage 0-50.00V arbitrarily adjusted, limit current 0-12.00A arbitrarily adjusted;
3. The output end does not burn when it is poured backwards;
4. The module can be set to turn on/off by default;
5. has a variety of software protection mechanisms, and the protection threshold is adjustable. After the module"s working parameters exceed the protection threshold, the output will be automatically turned off;
6. Using synchronous rectification technology, high conversion efficiency: efficiency is above 90%;
7. Enlarge the heat sink and install a fan to enhance heat dissipation.
I ordered this unit along with a 54.6 volt, 2 amp scooter charger. I've taken apart an old computer power supply for it's case and intend on mounting this digital control power supply along with the scooter charger as a source of power for this device.
I've already hooked the devices together and used it to charge a 40 volt Lithium battery from a Dewalt weed eater. The battery was fully restored after my test. I had to use a diode to keep the battery from back feeding into the digital controller and I then set the voltage a volt higher to make up for the voltage drop across the diode. I set this digital control power supply to 41 volts and set the amperage to .1 amps to trickle charge my old and dead battery.
The controller took about a day to restore this battery with these settings and when it reached my programmed limits it shut of output to the battery just as I had hoped it would.
It's going to be a very useful adjustable power supply on my bench.
Anyone else wanting to make such a supply, Banggood had these scooter chargers on sale for $11.99 right now.
I ordered this unit along with a 54.6 volt, 2 amp scooter charger. I've taken apart an old computer power supply for it's case and intend on mounting this digital control power supply along with the scooter charger as a source of power for this device.
I've already hooked the devices together and used it to charge a 40 volt Lithium battery from a Dewalt weed eater. The battery was fully restored after my test. I had to use a diode to keep the battery from back feeding into the digital controller and I then set the voltage a volt higher to make up for the voltage drop across the diode. I set this digital control power supply to 41 volts and set the amperage to .1 amps to trickle charge my old and dead battery.
The controller took about a day to restore this battery with these settings and when it reached my programmed limits it shut of output to the battery just as I had hoped it would.
It's going to be a very useful adjustable power supply on my bench.
Anyone else wanting to make such a supply, Banggood had these scooter chargers on sale for $11.99 right now.
I ordered this unit along with a 54.6 volt, 2 amp scooter charger. I've taken apart an old computer power supply for it's case and intend on mounting this digital control power supply along with the scooter charger as a source of power for this device.
I've already hooked the devices together and used it to charge a 40 volt Lithium battery from a Dewalt weed eater. The battery was fully restored after my test. I had to use a diode to keep the battery from back feeding into the digital controller and I then set the voltage a volt higher to make up for the voltage drop across the diode. I set this digital control power supply to 41 volts and set the amperage to .1 amps to trickle charge my old and dead battery.
The controller took about a day to restore this battery with these settings and when it reached my programmed limits it shut of output to the battery just as I had hoped it would.
It's going to be a very useful adjustable power supply on my bench.
Anyone else wanting to make such a supply, Banggood had these scooter chargers on sale for $11.99 right now.
Tips:For questions about your order, place of delivery, product discount, taxation, delivery time, warranty, shipping, payment, exchange rate, and other questions unrelated to the product, please contact customer service.
This product is a step-down module and cannot be boosted! The input voltage is 55V, and the output voltage can be adjusted from 0-50V. If the output voltage is 12V, the minimum input voltage should be 14V. The input voltage should not exceed 55V, it must be DC and not AC.
This product is a step-down module and cannot be boosted! The input voltage is 55V, and the output voltage can be adjusted from 0-50V. If the output voltage is 12V, the minimum input voltage should be 14V. The input voltage should not exceed 55V, it must be DC and not AC.
Answered by Jose_c on 13/06/2022Helpful (0)
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