100w portable solar report
Yesterday March 8 we had full sun here at Roosevelt Lake, AZ. My two Group 27 batteries read 12.52v at the start of the day, measured at the batteries with the Turnigy WattMeter. I used it to collec...
Forum Discussion
full_mosey wrote:
The gen 2 MS PWM has ambient temp compensation. If the controller is warm, the Volts will go below the 14.4V setting.
Right! I forgot that there exist controllers with temp sensor that is NOT remote. Honestly.
And this is too bad. Because controller is - usually - somewhere inside, at indoor temps 77F or higher, and this thing gets warm when it works, so it can be 72 at the battery outdoors, and +80 where the sensor is sitting. So, instead of raising the voltage, it's lowering it. These things should be banned.
Still, to lower the voltage from 14.6 to 13.8, it should be pretty hot, about 100? I would rather guess that those 13.8 were conditions when the controller was trying to bring it up to Absorb but couldn't, due to insufficient net current from the panel. Which in turn could be caused by loads running at that time. Get more panels.
