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Been away over Easter so tried suggestions but didn't seem to make much difference. Batteries showing around 13 volts in day but dropping to 10.2 or 10.4 overnight. Ammeter on panel shows anything up to 6amps during the day but power going from batteries to solar panel during night so suspect regulator may be faulty???
Not sure how to check this but I have a feeling one of you does.
Thanks in anticipation.
Been away over Easter so tried suggestions but didn't seem to make much difference. Batteries showing around 13 volts in day but dropping to 10.2 or 10.4 overnight. Ammeter on panel shows anything up to 6amps during the day but power going from batteries to solar panel during night so suspect regulator may be faulty???
Not sure how to check this but I have a feeling one of you does.
Thanks in anticipation.
I doubt that power is going to the solar during the night (unless the regulator is truly done for and its wired incorrectly) 6 amp drain overnight will flatten your batteries down to 10.2 or 10.4
How have you wired the regulator to the battery? On many regulators there are 3 pairs of terminals. 1 pair is the input from the solar panel. the second pair is the output to the battery and the third pair is what they term the load (amongst others) Your leads to the battery should be from the battery terminals and NOT the load. The load can on some regulators be used to feed night lights etc. which will drain the battery at night.
If the wiring is correct then try disconnecting the regulator at night and see if the batteries still drop
Thanks both. I suspect the regulator may be faulty as I've checked it today and the output voltage on the battery terminals varies from 11.7 to 20.1 volts while the input from the panel was reading 20.5 volts. With the battery disconnected from the regulator, the voltage dropped from 13.2 to 10.2 in less than an hour with all the lights on , bearing in mind most are led anyway and a tv running. It seems too fast for two 110A batteries to lose that much voltage. They are replacements from the originals and the van is not yet 2 years old. It has been stood since September before I bought it though and never really had much use anyway. The swift regulator has been changed for an EPHC EPM solar charge controller. The swift has two lots of cables for the regulator, three comprising brown/red live and a white/orange and thinner brown/red which both give a negative reading on the meter. There are also a red and a black one which give a lower voltage reading than the others.
Just been informed that the batteries should be connected to check the output voltage so I'll have to check that one again. Still unsure about how the Swift wiring should be connected into it though. Any ideas welcome on this one please!
I've been a bit dopey I think. Still, proves I must be human. Must tell the wife!!
Don't forget not to just reconnect the battery. You need to disconnect the solar panel from the regulator, connect the battery and connect the solar panel.
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