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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
HW-688 DC 5V6A Buck Module 12V24V To 5V Power Supply USB Charging 5A High Power 30W, 24V / 12V To 5V 6A1. USB mobile phone smart charging, RZC7512 charging control IC can identify the charging protocol and automatically switch the charging mode 2. Support the power supply range of 9 36v, covering common 12v and 24v power supplies. Simply connect the module with a wire, and you can output a constant voltage of 5v as a 5v power supply. When using 220v AC, you can use a 12 24v transformer to convert the output first in the connection module 3. Socket
1. USB mobile phone smart charging, RZC7512 charging control IC can identify the charging protocol and automatically switch the charging mode
2. Support the power supply range of 9-36v, covering common 12v and 24v power supplies. Simply connect the module with a wire, and you can output a constant voltage of 5v as a 5v power supply. When using 220v AC, you can use a 12/24v transformer to convert the output first in the connection module
3. Socket modification can install a small transformer inside the socket, and then connect the output wire to the module. If there is enough space inside the socket, you can open the socket to expose the output port of the module to the socket for easy use.
4. The plug strip with USB socket also needs to be modified. The module comes with a charging identification chip, which can automatically switch the charging mode, and the charging efficiency is higher and safer.
5. Output voltage: 5v
6. Working voltage: 4.5-5.5v
7. Input voltage: 9-36v
8. Application scope: USB charging for electric car/motorcycle modification, car power modification, solar battery, portable USB charging, generator USB output, DIY application
Specification:
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4.5 ★★★★★
Based on 2324 reviews
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Product Reviews
★★★★★ 5
Excellent lumbar support and easy assembly
I bought this chair because of my lower back pain, and it has been very comfortable to use. The leather feels soft, and the lumbar support is excellent. Assembly was easy, and the tools included, especially the screwdriver design were very well thought out, which made the whole setup process much easier.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Sturdy and comfortable
Color: Black
The chair is easy to install and great quality.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Very comfortable
Color: Black, Color: Black
Comfortable chair and easy to assemble. The cushioning feels nice and supportive, especially for long sitting sessions. Looks clean and feels sturdy for the price. Definitely worth it.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Comfort and luxury
Color: Black, Color: Black
Absolutely love this office chair! The comfort and support are excellent, especially during long workdays. The cushioning feels premium, the back support is great, and the adjustable features made it easy to find the perfect sitting position. Assembly was straightforward, and the chair feels sturdy and well-made. The wheels glide smoothly, and the overall design looks modern and professional. Definitely one of the best office chair purchases I’ve made — highly recommend!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Excellent Comfort and Great Value for a Home Office
Color: Elegant Grey, Color: Elegant Grey
I am extremely happy with this office chair and feel it offers excellent value for the price. The chair was easy to assemble, and all the parts fit together perfectly. Once assembled, it feels sturdy, stable, and well-made.
The high-back design provides outstanding support for my back, neck, and shoulders. The seat cushion is thick and comfortable, making it easy to sit for long periods while working, studying, or gaming. The padded headrest adds extra comfort, and the faux leather material looks stylish and gives the chair a premium appearance.
One of my favorite features is the flip-up armrests. They are comfortable to use and make it easy to slide the chair under my desk when I need extra space. The height adjustment, smooth swivel, and rocking function all work well and allow me to find the perfect sitting position throughout the day.
The chair arrived exactly as described and exceeded my expectations in both comfort and appearance. It looks great in my home office and has made long work sessions much more enjoyable. If you're looking for a comfortable, attractive, and affordable office chair, I highly recommend this product. I would definitely purchase it again and would gladly give it five stars.
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Reviewed in the United States on June 5, 2026