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DC-DC 9V/ 12V to 5V 4A Step Down Module DIY Power Bank Charger Board 3 USB Port Buck Converter Power Supply Charging Module

USD 2.75USD 3.67

DC-DC 9V/ 12V to 5V 4A Step Down Module DIY Power Bank Charger Board 3 USB Port Buck Converter Power Supply Charging Module

Description
Specification
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