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OutBack FM80-150VDC 80A FLEXmax MPPT Charge Controller

(44 ratings)

SpecificationCompareSee all
Controller typeMPPT
Maximum charging current80A
Maximum voltage of the solar panels150 V
Attachments
Return policy
OutBack FM80-150VDC 80A FLEXmax MPPT Charge Controller

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Customer reviews & Questions

Verified buyer reviews

Reviews (44)
Questions (3)

Brent

08/18/2025

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Inverter arrived right when expected and is working well. Replaced a pair of 36048s being used in master/slave configuration.

Maureen T.

07/16/2025

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ok so im not super technical but our rv kept having issues with the old batteries dying too fast especially in winter camping. my son researched for weeks and said get the northstar and just trust him lol. so i did. and wow what a difference. we went on a 10 day trip last month with two days of cloudy weather and the power situation was just a non issue the whole time. before we woulda been stressing by day 3. very very happy and yes my son was right as usual haha

Everret

07/10/2025

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Sam

08/17/2024

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that's a 5-star service and a 5-star product!

Sam Space

08/01/2024

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You're killing it guys, thanks

Henry

07/23/2024

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Very easy customer service experience. Thank you.

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So far i'm quite satisfied. would i recommend a1? 4sure

Iris

02/10/2022

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Grabbed that along with panels at their fulfillment center at Orlando. Very nice people, know their job. told me all about driving all this solar stuff home safely.

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02/10/2022

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Quite a convenient model, easy to program. The efficiency could be better, but for this money it’s a very good deal.

Garry

08/17/2021

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ok, i basically purchased this instead of getting an inverter and controller for my panels. quite convenient indeed and very easy to setup – i just basically hung it on the wall in the garage, connected it to my PV system and main panel and ran its standard program and voila. approved.

Cain

08/12/2021

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I was very pleased with the speed of delivery, thx! Yesterday we’ve finally finished the installation, everything is in place. The inverter works, it is very silent, let’s hope it stays that way.

P. Willis

08/11/2021

OUTBACK Charge Controller MPPT 60A Battery FM60-150VDC

Awesome charge controller! Yes, not the cheapest, but if you want to get an MPPT charge controller, I suggest you give this brand and A1 a try. I like that it can store 128 days of data, allowing you to see trends over time.

Patrick

08/06/2021

OutBack FLEXmax FM100-300VDC 100A 300Vdc MPPT Charge Controller

Works great with my li-ion batteries. Don’t expect any miracles from this unit, but it is a durable workhorse that can be installed outside without worries. I also liked the service and a pickup option, it saved me a lot of time.

bowser

08/05/2021

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very convenient. thank you very much

Tawnya A.

07/28/2021

OUTBACK Charge Controller MPPT 60A Battery FM60-150VDC

Excellent quality! Very well made. Had a bit of a problem with setting it up though.The manual is 126 pages long! Could not get customer service after waiting for 13 minutes. Would buy it again, but this time hire another electrician other than myself to help with the installation.

Dilis Calvin

07/21/2021

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I did my research before the purchase and you should do the same. Under my circumstances it was the best option, but keep in mind that it requires MATE3, MATE and MATE2 are not supported.

Jose Luke

07/19/2021

OUTBACK Charge Controller MPPT 60A Battery FM60-150VDC

I took an FM60 to Haiti recently. Very hot and high humidity. We coupled it with eight 180watt 26v modules. The controller was very easy to set up, and the charging began immediately. We had a 24v battery bank (8 x 6v). We put some heavy loads on it like pressure pumps, a big miter saw and a fridge. The unit never missed a beat.

Lamar Kodey

07/19/2021

OutBack FM80-150VDC 80A FLEXmax MPPT Charge Controller

Just awesome. The same goes for the service and delivery. The display shows all the relevant system data. Highly recommend

Remy J00

07/14/2021

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Just want you to know that the package arrived, everything is good. We’ll start the installation this week. Your calculator really helped with sizing, great tool.

Ruins4

07/08/2021

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Thanks for the service! The package came in like 4 days or something, very happy. I followed your guidelines and installed the inverter in the garage. Hope that this one will last longer than my last one. Stay safe!

Mia

07/06/2021

OutBack FM80-150VDC 80A FLEXmax MPPT Charge Controller

I owned a cheap 30A controller before. It clearly wasn’t up to the challenge of marine life. Installing this one was very easy, and now I enjoy fully charged batteries even on cloudy days.

RockyLee

07/04/2021

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Ricardo Rolls

07/04/2021

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Overall, it’s a good model for a camper van or a boat for its money. The efficiency isn’t the best, but it works well when it’s hot, the warranty is all right and it’s somewhat programmable. I picked two of these and they've been serving me for 6 months now.

DanTheMan

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Orfo1

07/03/2021

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Kory

07/02/2021

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The inverter itself I found to be too small for a home system. I put it in my van, works fine. the efficiency could be higher though. As for service, everything was good, the package arrived fast, tnx.

RetteR

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Just received the package, everything seems to be in place. Thanks for the fast delivery!

Railz

06/24/2021

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I installed this one on my yacht a long time ago, but it started clipping, because I added some stuff on the board. Anyway, I decided to buy another one to stack them. The retailer from which I purchased the first inverter went out of business, but luckily i found the same inverter here. The prices are good and the shipping was fast. Thanks a bunch..

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Purchased this one for my boat a year ago. Came back to find optimizers and decided to drop you a line and say thanks. Generally sea air doesn’t sit well with inverters, but so far this model is doing well.

Mr. Jasper

06/11/2021

OutBack FM80-150VDC 80A FLEXmax MPPT Charge Controller

We are not connected to the grid and all our energy comes from the sun. That’s why we need a backup for everything just in case. OutBack makes reliable equipment, hence our choice.

HuntF

06/11/2021

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Thanks! It’s been a year since me and my family went off-grid: the power lines here aren’t really good and we often sat in the dark for hours. Since we’ve installed solar, these problems have gone away. We also grabbed some batteries from you to have a supply for the night, they are nice.

Colin Jr

06/04/2021

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We used this inverter for our gas station in Ohio. The system is quite big so we had to get two of them. The results do not disappoint: we basically nullified our daily needs in commercial electricity. and at night the energy is cheaper anyway. Thanks a lot for the fast delivery!

Raynard Lewin

05/23/2021

OutBack FLEXmax FM100-300VDC 100A 300Vdc MPPT Charge Controller

Great charge controller, but I wonder why they couldn’t add a small display that you can see in so many other models. If this is an important feature for you, you will have to look through other options, but overall it is an excellent device

Clara

05/18/2021

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We bought two of these a year ago for our home system. My husband actually used your calculator to size the installation. The inverters still work fine even though it can be quite dusty here in Arizona. just wanted to thank you once again for your amazing service!

Ernan

05/16/2021

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I purchased this inverter and so far I’m impressed with how well it withstands the weather here in Arizona. Each of my two previous inverters died within six month after the purchase because of the dust and heat, but this one is already 1 year old and is still going strong.

Simon Day

05/16/2021

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Thx, I picked this model for my RV four month ago and it doesn’t disappoint so far. I drive around a lot, but since I installed solar, I don't really need camper parks anymore. There isn’t a lot in my van — a laptop, lights plus some stuff for cooking. this is why I chose an inverter with a little capacity — it’s enough for me.

Rem

05/12/2021

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Everret

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Joe Hallam

08/07/2021

is it good for 2 way radio operations? will it create rfi?

A1 SolarStore

This model will create no interference.

Kyro Jay

07/26/2021

How many solar panels can this controller handle?

A1 SolarStore

12VDC systems: 1000W; 24VDC systems: 2000W; 48VDC systems: 4000W; 60VDC systems: 5000W.

Pamella S.

07/10/2021

hi, is 80 A current preset or adjustable?

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The controller will self-adjust depending on the input and the number of connected batteries.

Specification

Controller type	MPPT
Maximum charging current	80A
Maximum voltage of the solar panels	150 V
Dimensions LxWxH	16.25 x 5.75 x 4.5 in
Manufacturer	OutBack Power Systems
Manufacturer Part #	FM80-150VDC
Operating Temperatures	104°F (40°C)
Warranty	5 years manufacture

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Attachments

OutBack FM80-150VDC 80A FLEXmax MPPT Charge Controller

About product

Outback, FM80-150VDC MPPT Charge Controller, 80A, 150VDC, 12/24/48/60VDC, FM80

OUTBACK FLEXmax MPPT 80A is an innovative charge controller from OutBack Power Systems. The FLEXmax algorithm stays active at every moment, increasing your solar harvest up to 30% compared to non-MPPT controllers. Intelligent thermal management coupled with active cooling allows this controller to operate at its maximum current (60 A), in temperatures as high as 104°F.

FlEXmax family of charge controllers is full of revolutionary features, such as various battery voltages support and step-down functionality to charge lower voltage banks. The device records and stores performance data for up to 128 days. The information is readily available via an 80 character display with backlight, that also shows current status info. Remote programming and monitoring are in the list of features too, providing superior system integration.

Performance, efficiency and versatility – these three words define FLEXmax MPPT Charge Controllers.

Features

FullOutBack network integration for remote programming and monitoring
Constant Maximum Power Point Tracking (MPPT)
High operating temperatures of up to 104°F (40°C)
PV system output increase of up to 30>%
Programmable auxiliary control output
12 VDC to 60 VDC battery voltages
128 days of data logging
5 year warranty

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