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