I’m looking for some advice regarding the warning given when you disable your MPPT using the charger enabled toggle in Victron Connect.
The warning states “Charger should be disabled during maintenance tasks only” implying that it could be detrimental to the apparatus or system if the toggle is used to disable to charger for an extended period?
Yet, in the same manner, the Charger Enabled toggle for an Orion XS or the Orion XS’ “switch” available in the new UI doesn’t give a warning and thus presumably it’s entirely OK to switch it off or on at will?
I’m a mere mortal, so my utmost respect goes out to those that design these items and the software that runs them.
I’m assuming (in my limited knowledge) that the MPPT uses a MOSFET to switch the charge current on and off and that toggling the charger enabled switch switches the MOSFET off.
I’m also guessing that once the MPPT charger has determined that a charge cycle is complete that it switches the MOSFET off and that it would stay off until the charger determines it wants to rebulk.
I am thus struggling to see the difference or the need for the warning.
The issue has arisen due to the fact that I now understand that MPPTs start a new charge cycle each and every day regardless of whether VBatt drops to V float minus V offset or not. This means that my RV is rebulking everyday despite only having a parasitic drain of 0.08v
I have created a workaround by creating a new charge profile for the MPPT with an absorption V lower than I’d ideally want to stop the MPPT rebulking everyday. Then after 7-10 days I go back in and apply the initial charge profile. A faff!
If I could disable the MPPT with the toggle it would still be a faff, but less so.
Ideally an option to set the re-bulk frequency on MPPTs in the same way as you can on an Orion XS would be a proper fix but not one that can be effected by a mere mortal like me, it would require a firmware update by the clever people that design the apparatus and the software that runs it!