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2012Batteries/Power forum

Obtaining a 5V 2A regulated power supply from 14.4V DC input

14 years old. Gear and prices may have changed since.

What the thread found

  • A car-USB charger can serve as a ready-made voltage regulator accepting variable input up to 14.4V DC and outputting 5V regulated at 2A or higher
  • iPad-compatible car chargers typically provide 2.1A output, making them suitable for this application
  • The data pins (center two pins) on a USB connector can be removed or disconnected, leaving only the outer two pins for power delivery

Depends on

  • The source suggested this solution but did not provide detailed technical specifications or exhaustive testing across all charger models
  • Success depends on selecting a charger explicitly rated for 2A output or higher
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