05-02-2016, 11:38 AM
(05-02-2016, 11:35 AM)clamum Wrote: So it sounds like I'd need a DC-DC step down converter like you or rahlquist posted, and a battery (like this P64 RTC backup battery?)
Nope, in a car you need a stabilized step-down converter and you need a real battery (for the cases when input voltage drops below certain tresholds eg when you turn on the engine). Pine64 has a real battery connector not just for the RTC.