Controller question

antares36antares36 Registered Users Posts: 2
I have recently bought an MPPT Controller for my Boat.... (Morningstar PS MPPT25.  It has output for "Load" and "Battery" ...Question ...If I am charging my Batteries and running my systems from the house bank do I need to connect the house system through the "Load" or can I just leave it unattached.  The directions are somewhat vague ...and I am male....


  • jonrjonr Solar Expert Posts: 1,379 ✭✭✭✭
    Not sure I understand the layout, but my guess is that anything not connected to Load will not be subject to the MPPT25 low voltage disconnect.  If you don't care about that, then leaving it unattached should be fine.

    I am available for custom hardware/firmware development

  • mike95490mike95490 Solar Expert Posts: 8,875 ✭✭✭✭✭
    The LOAD terminals have a finite current rating, if you draw too much, you fry it.   Otherwise, loads, like anchor lights and bilge pumps should NOT be subject to LVD, they are critical loads, and are worth killing the battery to save the boat.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    gen: ,

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