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OutBack Power FLEXmax Charge Controller Review

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Very good

Revainrating 4 out of 5  
Rating 
4.0
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Description of OutBack Power FLEXmax Charge Controller

100A output for up to 6kW of charging. Updated MPPT software algorithm improves energy harvest vs other controllers. 300VDC open-circuit voltage limit enables 2-4 string configuration to minimize BOS. Programmable auxiliary control output for smart load controls. Standard 5 year warranty upgraded to 7,000W of nameplate solar power at 48V.

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Type of review

Revainrating 4 out of 5

Beware! Programming requires Mate3 for $425.

Great charge regulator but this is the only one I've seen that doesn't have a simple menu or regulator like every other charge regulator on the market. Not compatible with MATE or MATE2. REQUIRES $425 MATE3 and is not intuitive. Definitely needs programming to charge LiFePO4 batteries. I assumed there would be a small screen and control buttons behind the gray plastic cover like other devices. Nothing.

Pros
  • Energy Regulator
Cons
  • Slightly dented