2023-04-05, 09:47 AM
(2023-04-04, 11:23 AM)Sailoog Wrote: Test done. Look at the picture, the system has been running for over an hour at 18V. Everything works as usual but the power module gets very hot (using the scientific method of holding your finger for 3 seconds before burning it).
The power supply on the left was powering an RPi4 running OpenPlotter with 2 opencpn instances, the signal k server, a GPS, an IMU, and an 8-inch monitor.
System drops at 20V but everything survives undamaged even above 25V.
On this scenario it would be really recommended using an small heat-sink for the power module but the question here is: is there an alternator, charger, MPPT... capable of charging 12V systems at that voltage? The most I can find are LiFePO4 chargers at a maximum of 15.6V.
Actually no. The charging voltage for lead acid batteries is 14.4-14.8 V. If you have voltages higher than this, having noise in your setup is the less of you concern at the moment...