Page last updated Mar 23, 2022 @ 08:06pm

FM60-150 FM80-150

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Charge Controller
60A & 80A, 12/24/36/48/60Vdc

The FLEXmax FM60 and FM80 are the latest innovation in maximum power point tracking (MPPT) charge controllers by OutBack Power.  The MPPT software algorithm is both continuous and active, increasing your power yield.  With enhanced cooling management these controllers can operate at their maximum current ratings in ambient temperatures as high as 104F (40C).  And they will automatically de-rate power output for temperatures from 40C to 60C.  Set points are fully adjustable.

The FLEXmax FM60 and FM80 can also charge a lower voltage battery bank from a higher voltage array or other dc source (such as hydro or wind) as long as the maximum open circuit voltage is never exceeded.  This is perfect for reducing voltage drop and wiring costs of those long runs between far-away dc power sources and your battery bank.  For example, a hydroelectric turbine can be purchased at 120Vdc output and connected to a 12, 24 or 48Vdc battery bank with this controller at the battery bank.

A built-in backlit 80 character digital meter displays the current system status and data logging performance for the last 128 days.  Integrated network communications using CAT5e/RJ45 allows remote programming and monitoring via the OutBack MATE system.

Note that the FLEXmax FM60 and FM80 are not suitable for use as PWM diversion load controllers. However, the AUX2 port on these controllers CAN be programmed to operate over a set voltage band and used to control a separate solid state relay that powers a diversion load.

IMPORTANT: The FLEXmax FM60 and FM80 come from the factory configured for use with solar PV systems. If using with a hydro system the setup must be changed or damage can result. Contact us for details before operation.



Voltage 12/24/36/48/60 VDC
Charge Current 60 amps or 80 amps depending on model
Load Current 60 amps or 80 amps depending on model
Low Voltage Disconnect Yes
Maximum Supply Voltage (open circuit) 150VDC
Dimensions (H x W x D) 13.5" x 5.8" x 4.0"
16.3" x 5.8" x 4.0"
Warranty 5 years


60 amp model 80 amp model

Item Number: FM60-150
Price: $529
Price last updated 3/21/2022
Shipping Weight: 15 lbs.
This item normally ships in approximately 2-4 weeks or less.

Item Number: FM80-150
Price: $580
Price last updated 3/21/2022
Shipping Weight: 16 lbs.
This item normally ships in approximately 2-4 weeks or less.



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