Solar help... Mppt or PWM
Hi.. I recently got a new solar panel from somewhere... fell off truck... lol I know mppt is the way to go im mysituation but am asking for advice... panel 250 watts volts 30v. Wh...
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I have a disconnect switch on the battery side.. No fuse yet. Yes the panels unplug from side of trailer..
But looking in the manual now there is a 25 amp fuse built into the unit per the schematic..It shows it on the batt positive side internally..
I tested how long the unit stays in bulk.. Totally overcast day. I ran a load in camper. Getting 4 amps or so from panel. Controller is staying in bulk I assume until 14.8 volts is reached..
So it does go from bulk right into float and passes the absorb stage.. I wonder why..
But the settings for absorb I set to 14.8v. There is no bulk setting in the menu. I assume bulk and absorb are one in the same really..
Panel behind camper.
4 amps on cloudy day..
Here is the stupid demo mode..
But looking in the manual now there is a 25 amp fuse built into the unit per the schematic..It shows it on the batt positive side internally..
I tested how long the unit stays in bulk.. Totally overcast day. I ran a load in camper. Getting 4 amps or so from panel. Controller is staying in bulk I assume until 14.8 volts is reached..
So it does go from bulk right into float and passes the absorb stage.. I wonder why..
But the settings for absorb I set to 14.8v. There is no bulk setting in the menu. I assume bulk and absorb are one in the same really..
Panel behind camper.
4 amps on cloudy day..
Here is the stupid demo mode..
