FLEXmax 80

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Mangas
Mangas Solar Expert Posts: 547 ✭✭✭✭
OutBack sent some literature to me about the new FLEXmax 80 charge controller.

What really caught my attention was their claim of increasing PV Array Output by up to 30%. I like that! They offer a 5 year warranty.

Switch out my MX60s' for two new FLEXmax 80s'? Reading the specifications on the back of the literature, I'm just not savvy enough to know if these units would justify the replacing the MX60s'.

For my fixed array system, what do you guys think?
Ranch Off Grid System & Custom Home: 2 x pair stacked Schneider XW 5548+ Plus inverters (4), 2 x Schneider MPPT 80-600 Charge Controllers, 2 Xanbus AGS Generator Start and Air Extraction System Controllers, 64 Trojan L16 REB 6v 375 AH Flooded Cel Batteries w/Water Miser Caps, 44 x 185 Sharp Solar Panels, Cummins Onan RS20 KW Propane Water Cooled Genset, ICF Custom House Construction, all appliances, Central A/C, 2 x High Efficiency Variable Speed three ton Central A/C 220v compressors, 2 x Propane furnaces, 2 x Variable Speed Air Handlers, 2 x HD WiFi HVAC Zoned System Controllers

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  • Solar Guppy
    Solar Guppy Solar Expert Posts: 1,989 ✭✭✭
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    Re: FLEXmax 80

    The 30% claim is over a pwm controller NOT a true mppt controller like your MX60's. I think best case you looking at maybe 5% maximum in harvest increase from a MX60 ( dynamic tracking on the Flexmax vs sweep based mppt on the MX60 ) and typically even less difference

    I'd just stick with the MX60's unless you need to expand
  • Mangas
    Mangas Solar Expert Posts: 547 ✭✭✭✭
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    Re: FLEXmax 80

    Better understanding now and thanks.

    No plans to expand. Will stay with what I've got.
    Ranch Off Grid System & Custom Home: 2 x pair stacked Schneider XW 5548+ Plus inverters (4), 2 x Schneider MPPT 80-600 Charge Controllers, 2 Xanbus AGS Generator Start and Air Extraction System Controllers, 64 Trojan L16 REB 6v 375 AH Flooded Cel Batteries w/Water Miser Caps, 44 x 185 Sharp Solar Panels, Cummins Onan RS20 KW Propane Water Cooled Genset, ICF Custom House Construction, all appliances, Central A/C, 2 x High Efficiency Variable Speed three ton Central A/C 220v compressors, 2 x Propane furnaces, 2 x Variable Speed Air Handlers, 2 x HD WiFi HVAC Zoned System Controllers