We are no longer offering this product.

The below information is presented for informational purposes only. You may also find similar items in the category.

Outback Flexmax Extreme 80A MPPT Solar Charge Controller

Outback Flexmax Extreme 80A MPPT Solar Charge Controller
Outback Flexmax Extreme 80A MPPT Solar Charge Controller
Item code Brand name Model number Amps
OUTFW-FMEXTREME Outback Flexmax Extreme 80A

Outback Power Systems

Outback Power
Flexmax Extreme Charge Controller
FM Extreme

The new Outback Flexmax Extreme Charge Controller is the first outdoor-rated MPPT charge controller with unprecedented thermal management capabilities designed for the most extreme environmental conditions. It's engineered around the concept that the strongest chain is one with no weak link. In the case of the 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. And because a passively cooled unit can be sealed, circuit boards and other sensitive electronics are protected from dust, dirt, insects, and other external sources of contamination.


  • Thermal design provides full power output from -20 to 45 °C without requiring a cooling fan
  • "Ground-agnostic" design to support negative, positive, and floating ground systems
  • Substantial wire-bending space and oversized terminals for easy installation with large gauge wire
  • NEMA 3R (US)/IP54 (International) outdoor-rated enclosure for use in rugged and remote environments
  • Field upgradable firmware and remote battery voltage sense (improves battery charging performance and voltage measurment accuracy)
  • Certifications -UL1741, CSA C22.2 No. 107.1, IEC 50178, AS/NZS 3100, IEC 61000-6-1, IEC 61000-6-3, FCC Class B, RoHS, CE
  • 5 year warranty


Electrical Specifications
Nominal DC Input Voltage 12, 24, 36, 48, or 60 VDC (auto adjust at startup)
Maximum Output Current 80A @ 45°C/113°F with adjustable current limit
PV Open Circuit Voltage (VOC) 150 VDC absolute maximum coldest conditions
Standby Power Consumption Less than 1W typical
Charging Regulation Bulk, Absorption, Float and Equalization
Battery Temperature Compensation Automatic with optional RTS installed
Voltage Step-Down Capability Down convert from any array voltage to any battery voltage
Programmable Aux Control Output 12 VDC output signal (programmable)
Data Logging Last 128 days of operation
Conduit Knockouts One 1" 35mm on both left and right sides, and on back; two on bottom
Temperature Range -40°C to 60°C (full power output -20 to 45°C)
Remote Display and Controller Optional MATE3, MATE, or MATE2
Options AXS Card Modbus/TCP Interface, External Turbo Fan, Remote Temperature Sensor (RTS)
Mechanical Specifications
Dimensions Unit: 18.56 x 8.8 x 6.0” (47.1 x 20.9 x15.2 cm)
Shipping: 9.69 x 11.75 x 22.75” (24.6 x 29.8 x 57.8 cm)
Weight Unit: 22.6 lbs (10.23 kg)
Shipping: 26 lbs (11.79 kg)

Outback Power Systems

Click here for BBB Business Review ASE NESEA Member
Paypal Visa MasterCard Amex Discover
McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams