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OutBack FlexMax Extreme > 80 Amp MPPT Charge Controller

OutBack FlexMax Extreme - 80 Amp MPPT Charge Controller

Warranty: 5 Years

Stock Status:(Out of Stock)
Availability: This item has been discontinued.

Description Datasheet

Outback 80 Amp 150 VDC MPPT Charge Controller

This brand new charge controller from OutBack Power features passive cooling to improve reliability.


Model Flexmax Extreme
Series Flexmax
Manufacturer Outback Power


Dimensions (W x H x D) 18.56" x 8.8" x 6.0"
Weight 22.6
Shipping Method Ground

Input (DC)

Rated Current 80 A
Operating Voltage 150 V
Battery Charging Voltage (Programmable) 12 V
24 V
36 V
48 V
60 V


Data Sheet Outback Flexmax Extreme

Detailed Description

Outback created the de facto industry standard when the company introduced its MX60 design, the first multi-voltage MPPT charge controller. Now Outback follows up on its original breakthrough with another first: a sealed, outdoor-rated charge controller with unprecedented thermal management capabilities designed for the most extreme environmental conditions.

The FlexMax Extreme is engineered around the concept that the strongest chain is one with no weak links. In the case of charge controller design, the weak link is typically the cooling fan. Removing the fan removes the greatest obstacle to long service life and high reliability, as fan problems severely limit power output.

FlexMax Extreme's advanced thermal engineering provides full power output from a -20° C to 45° C without requiring a cooling fan. And because a passively cooled unit can be sealed, circuit boards and other sensitive electronics can be fully protected from dust, dirt, insects, and other extermal sources of contamination.

Installer features of the FlexMax Extreme include: "ground agnostic design to support negative, positive and floating ground systems, increased wire-bending space, oversized terminals for easier installation with larger gauge wire, and mechanical design that permits servicing and replacing all power components while the unit is mounted on a wall and attached to a conduit.

The FlexMax Extreme Charge Controller can not only go anywhere, it can also get there faster by saving precious installation time. It is a fitting companion to OutBack's renowned sealed FX inverter/charger line and demonstrates the company's on-going commitment of providing clean, reliable power anywhere it has the potential to transform lives.

  • Environmentally-rated sealed enclosure (NEMA 3R)
  • Solid-state, passively cooled design enables sealed architecture, long-term reliability, and quieter operation overall
  • Remote battery voltage sense improves battery charging performance and voltage measurement accuracy
  • Powerful simplified fault sense supports today's and tomorrow's safety requirements
  • Easily-integrated AXS Card Modbus / TCP interface provides powerful command, control, and integration for industrial customers
Frequently Asked Questions
  • How do I size my charge controller?

    Take the total wattage of your array (number of panels x watts per panel) and divide it by the voltage of your battery bank to get amps, then round up. The amp rating of your charge controller must exceed this number. If you need any assistance sizing your charge controller, please don't hesitate to call us at 888-899-3509 ext 1.

  • Should I get an MPPT or PWM charge controller?

    Simply put, if the voltage of your panels is close to the voltage of your battery bank, a PWM charge controller is an affordable choice. However, if your panel voltage is much higher than your battery bank, you should use an MPPT controller because it is designed to convert that higher voltage into amps, which will charge your batteries faster and provide you with a more efficient system.

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