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150W DC-DC Boost Converter Power Supply Module 10-32V To 12-35V 6A DC DC Step-Up Power Board DIY Electric Voltage Charger Module

DC 400W 15A Step-up Boost Converter Constant Current Power Supply LED Driver 8.5-50V To 10-60V Voltage Charger Step Up Module

XH-M350 12V 150W 12A Backup Battery Switching Module High Power Board Automatic Switching Battery Power

YX850 Power Failure Automatic Switching Standby Battery Lithium Battery Module 5V-48V Universal Emergency Converter JY-850

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