Reviews of Outback Flexmax 80 FM80 MPPT 80 AMP Solar Charge Controller

Customer Ratings:

this is outback's top of the line solar charge controller. While a little pricy, it works as advertised. Wrings the most power from solar panels, and accepts voltages up to 150V. This allows use of much smaller wire for the run from the panels to the controller. The 10AWG wire I'm using cost a fraction of the 2AWG I would need without this feature. What I really love about this machine is that while it has incredible features and almost endless possible adjustments, I can just hook up 4 wires, tell it my battery is 12 volts, and I'm up and running. No fuss at all. Have three of these feeding the same battery bank, and will probably have a couple more as I add more solar panels to my off grid system. Temps here have been over 100 f. all week and the controllers haven't missed a beat. This product is worth the cost.

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This unit increases the effective energy harvest from a solar panel system by about 30%. Bottom line, less panels more effective, more efficient more environmentally friendly.

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The Outback FM80 is the real deal. I have it hooked up to my off grid system and it does what it is suppose to do. Find more power from the solar panels. Highly recommended. Very happy to own it.

Honest reviews on Outback Flexmax 80 FM80 MPPT 80 AMP Solar Charge Controller

I currently run 22KW of Solar arrays on a totally off-grid farm currently with ~44KWH of battery storage.

I currently use 4 of OutBack FlexMax 80 charge controllers, and have done so for almost 3 years as of this review. In that time I've had no failures or erratic performance from any of these controllers. This system is extremely configurable, and it's MPPT algorithms do an excellent job of both squeezing every extra watt out of the feed panels, as well as taking excellent care of the battery arrays.

I'd give this more stars if I could.

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There is no better charge controller so they say ... and the 4 I own give me no reason to believe any differently they deliver the amps above what my old PWM controllers did. The setup is automatic just hook-up and it figures out the critical details and just prods you to confirm the battery bank voltage & the language for the user interface. I've watched these closely for over a year now ... they are consistent and they perform.

On the downside ... if you do venture into the programming details adjustable values and such ... I don't think I've ever seen a worse user-interface. It's like they let some rooky programmer throw together a bunch of random screens the organization of the information does not seem logical ... I've been doing this stuff since the early 90's so I've seen plenty of other companies get this part right. But plenty get it wrong too, so hey ... Outback as a company has a little maturing to do when it comes to user interface design. I still love their product / work ... and love the artwork on the inside of some of their products.