The switches you have most likely only disconnect your load items e.g. lights, toilet pump, frig control panel, rangehood etc from the batterey. This is how caravans/motor homes are normally connected. The input supply from the the solar panel normally has no switch between it and the solar controller nor a switch between the solar controller and the battery. Thus the solar is effectively always connected through to the battery to ensure that the battery is charged. Sometimes, a CB or Double Pole low voltage switch may be installed between the panel(s) and the controller, this to enable the panels to be quickly disconnected from the controller for maintenance purposes.
For large (50Ah and more) lead acid batteries a current of 0.5A+ when on float charge is quite normal. The reasons this occurs are in the chemical domain and outside my knowledge base but it's not anything you need be concerned by.
----
Edit: I misread your post and thought you had 240V connected, but you do not.
If it shows charging current at night then it's a calibration issue, if it does not then it's float charge current.
-- Edited by Mike Harding on Tuesday 13th of September 2022 05:21:03 AM
__________________
"I beseech you in the bowels of Christ think it possible you may be mistaken"
Oliver Cromwell, 3rd August 1650 - in a letter to the General Assembly of the Kirk of Scotland
Had a similar problem with one of my monitors (3). With all loads off and solar disconnected it still showed .5A. Found out that the monitor had a reset function. Once reset to 0.0A all three monitors then showed same readings.
__________________
Cheers, Richard (Dick0)
"Home is where the Den is parked, Designer Orchid Special towed by Jeep Grand Cherokee Limited"
"4x250W solar panels, Epever 80A charger and 3x135Ah Voltax Prismatic LiFePO4 Batteries".
Had a similar problem with one of my monitors (3). With all loads off and solar disconnected it still showed .5A. Found out that the monitor had a reset function. Once reset to 0.0A all three monitors then showed same readings.
A bit like my clamp meter. I turn it on and select a scale & it shows a reading until I hit the reset a few times till I get a zero reading. Marvelous what you find when you read the instructions.
Most monitors have the ability to be recalibrated. If you are sure there is no charge coming in (check at night or with blankets over the solar panels) you can safely re-set your reading to zero amps.
