Because I want to power my Winlink station 100% solar/battery, I needed to test the BMAX on a varying DC voltage supply like it would see connected to the station battery.
I have a higher end adjustable power supply that is well suited for this purpose with limiting (in case my test goes south!) and to the milli Amp metering.
I tested over a 18 hour period starting at 12.8v which is the low end for the LiFEPO battery and 14.4v which is the charging cut off.
8 hours were at 13.8v which is the normal output of a Astron 12v power supply.
The mini pc was running Winlink and VARA and I would open web pages on the Internet to add load from time to time.
I noticed no unusual behavior or heating. The current draw profile averaged around 300 mA idling with Winlink and I could get it to draw over 1A by starting more programs, as expected.
Most time it took between 300-700 mA operating Winlink/VARA-FM, sending and receiving email.
In conclusion, I'm confident enough to run mine from either a HAM 13.8v power supply or a active solar system up to 14.4v.
Long term operation could say otherwise and I will blow my horn if I find that out.
73
Mike N0QBH
N0QBH Mike Berg