TESTED: Dometic CFX3 45

At the 2019 SEMA show, Dometic released their CFX3 line of electric coolers, which are the latest generation of the CFX series that I’ve reviewed in the past HERE.  Everything from the compressor to the control app was updated for this complete product line refresh, and after spending some time checking out the new coolers at the show, I left Dometic’s booth eager to put one to the test in the real world.  We all know that seeing something at an industry show is one thing, and spending months with that same product while traveling thousands of miles off-road in the real world is another – so rather than create just one more short term review of a product, I figured I would push this one out to over a year of use – to see just what living with the CFX3 is like well after the honeymoon phase of ownership.

At first glance, a CFX3 electric cooler may look similar to the old CFX series, but look closer and you’ll begin to see just how much has changed.  Construction wise, everything from the handles to the compressor unit to the controls have been revised.  The handles are now all aluminum, so there’s no need to worry about cracking a handle if something smashes into the cooler or if your buddy goes full hulk mode using a ratchet strap around a handle to secure the cooler in your vehicle.  We can’t see the compressor unit, but know that it’s an entirely new unit that is more efficient, consumes less power, and creates less noise than it’s predecessor.  This means that the CFX3 coolers are easier on your battery system when you’re parked, and they’re even easier to sleep near.  Dometic has also moved the compressor to the opposite end of the cooler from the lid opening, so now when you open the lid the deep end is closest to you.

On the control side of things, the CFX3 series steps into the modern age with a high resolution display that is a welcome change over the old LCD display on the older coolers.  No longer will you have to reference your manual to remember how to make a settings change, or figure out what the display is trying to tell you.  With the CFX3 display you can clearly read, adjust, and understand all of the settings with just a few button presses.  The whole process is very intuitive, and folks who have never seen the manual can make any adjustment needed without issue.  When the display isn’t in use, a little snowflake icon on the display lets you know the unit is powered up, so parasitic draw is less than the bright LEDs used by other brands of coolers.  Next to the display, you’ll also find a USB port that’s been upgraded to provide 2 Amps of power at 5V, which is a welcome upgrade over the 500 milli-amp outlet on the old CFX units.  This increase in current means that the CFX3 can actually charge modern power-hungry devices, and the port is in a great location to power a speaker or other device while you’re in camp.

Speaking of devices, Dometic has also improved the companion app for the CFX3 series. The app uses a Bluetooth connection that sips power, and now you can plot your cooler’s energy consumption in addition to fully controlling the cooler from your phone.  In use, I’ve noticed absolutely no hiccups using the app on Android devices, and being able to know how much power your cooler is currently consuming and how much power it has been consuming is powerful information when it coming to determining just how long you can go before needing to charge your battery system.  The CFX3 series coolers do come with a configurable low voltage cutoff, so you can protect your battery system from over discharging.  As they say knowledge is power, and it’s super easy to pop open the app and see where your battery system is at, rather than having to guess at your state of charge. 

Inside the CFX3 45, things will start to look like familiar Dometic territory, and it’s here where you’ll find the versatile system of baskets and dividers that allow you to organize your cooler loadout.  There is a basket for the shallow section of the cooler, and a basket for the deep section that be divided in half vertically with a removable insert.  Volume wise, the CFX3 45 measures in at 46 liters of storage, and this works out to a deep basket that can hold 16 sleeved standard size soda cans per layer with ease.  Drive off-road long enough and the simple action of cans rubbing against each other as you bounce down a trail can wear a hole in an aluminum can.  Pro tip: This is why you can never have too many foam beer koozies.  Should a can have a hole worn in it, or something else in your cooler decide to leak, there’s still a drain plug that’s easy to use at the bottom of the cooler.

Getting in and out of the CFX3 45 is where I noticed about the only issue that I’ve been able to find in my extended time with the cooler.  That issue is that the lid doesn’t always latch unless you give it a firm press to close it.  I would like the lid to work like a car door, in the respect that it’s easy to close and that it seals well, yet with the CFX3 lid, even dropping it closed isn’t enough to do the trick.  The best practice is to gently close the lid and then give it a press to engage the latch.  This is by no means a deal breaker, but I’ve seen other CFX3 coolers suffer the same ailment, and there may have been one case where a cooler in the back of a truck was closed but not latched, and spirited driving resulted in lunch being put out early – but the point is, just check that the lid is latched and you’re good to go.  Other than the lid, every CFX3 cooler I’ve encountered in the wild has worked flawlessly.

The 100 year old hotel and the 100 day old CFX3 45.

If you’re reading this and thinking to yourself that yeah, an electric cooler would be rad, but that’s a lot of money to spend on a camping gadget – remember this:  Dometic also provides an AC power adapter so that you can run your cooler when you’re at home or anywhere else you have access to AC power.  This means that your electric cooler can pull double duty and be of value at home and on the road.  Need a drink cooler in the shop?  Need a place to store additional food so that you don’t have to go to the grocery store as often?  Staying in a hotel for long term work? Don’t think of an electric cooler as a camping only tool – they are devices which can provide value every day of the year, or whenever you need them. 

In a nod to Dometic’s longevity, one of our American Adventurist staff has been running the same Dometic electric cooler for more than seven years now, and thanks to the solar panel on his roof, it’s been on 24/7.

The CFX3 45 Cooler that I’ve been testing for the last year hasn’t been phased by anything that I’ve thrown at it.  To give you a quick idea of what It’s been through, the cooler has:  Frozen in the winter in Idaho, baked in a hot car in the middle of summer in Phoenix, and logged nearly 35,000 miles of travel.  Several thousand of these miles were off-road, doing everything from Go-Fast Dirt to rock-donkey rock crawling.  The cooler may or may not have logged a little bit of flight time, and it’s spent plenty of time packed next to everything from other pelican boxes to recovery gear while bouncing around all over the Western US.  It may have a few scuffs and scrapes and dust that will never come out, but the unit works just as well as it did on day one.

The Dometic CFX3 45 has been an awesome electric cooler.  I have to give Dometic props for looking at their old CFX series of coolers (which are solid units) and figuring out how to make them better.  With the CFX3, the compressor is more efficient and quiet.  The user interface is so much easier to use.  And other little details like the revised USB port all add up to make a cooler that has been a joy to use.  The bottom line is this:  If you want an electric cooler that you just plug in and know that it’s going to work, you can’t go wrong with a CFX3.  No matter where your adventure is going to take you, know that the CFX3 will stand up to what you throw at it, and keep everything you throw in it cool.  When the road finally sees you back home, know that an electric cooler can be utilized around the house – so don’t think that an electric cooler is a travel-only toy.  Electric coolers have never been easier to use, or more useful – so if you’ve been on the fence about ditching ice, know that with a CFX3 cooler you’ll never look back.

Full Disclosure: Dometic provided a sample CFX3 45 electric cooler free of charge to the author for the purposes of this review.

TESTED: Offgrid Trek 215w Solar Blanket Bug Out Kit

I’ve been going back and forth trying to decide between adding a dual battery setup to the Jeep, or finding a better solar option for “unlimited power” when stationary.  Like most of you, I need peace of mind running the fridge in camp and easy access to power for charging USB devices. At Overland Expo East 2019 I ran across a veteran owned Canadian company that makes serious expeditionary grade kits that are ready for hard use in all weather, right out of the box.

Off Grid Trek makes solar blankets that feature durable panels with SunPower Gen 3 Maxeon EFTE coated solar cells. Imported from Japan, the EFTE coating (Ethylene tetrafluoroethylene, a thermoplastic copolymer) adds physical toughness to the cells which adds to their lifespan, and also enables better transparency than the normal PET coating used on many panels which increases output in the same light conditions, resulting in a whopping 23.8% efficiency. Many companies are using cells that only get about 15% efficiency under the same conditions so these panels are actually quite stellar in their performance.

Clearly, solar panel efficiency, power output, and durability has improved considerably over the years, and I’m simply amazed to be able to get 200+ watts from a 13-pound solar blanket that when unfolded measures 68 x 36 inches, and only 12.6 inches square when folded up. This is much smaller than our older 120 watt Power Film solar blanket. I was also pleased to see the use of Anderson connectors and heavy duty, 5-millimeter wiring used throughout the kit. This heavy duty wiring reduces voltage drop under peak charging conditions, and increases the lifespan of the harness overall.

The main wiring harness measures 16 feet long, so use on a roof rack, roof top tent, or even hanging it in an adjacent tree is no problem. The harness is also what I call “GI proof”, meaning the Anderson connectors only connect one way so if you can follow the simple instructions on the solar controller, and if you can tell the difference between positive and negative at your battery, wiring it up takes all of 2 minutes with a frosty beverage in one hand. So easy an Overlander can do it.

For me, all this information validates the fact that this Canadian company is making panels that work even in Canadian conditions – without direct sunlight and even on cloudy, rainy, overcast days. Most panels today stop working in these low light conditions, and it’s been my experience that when inclement weather hits I really need the capability to keep my batteries full. The heavy duty materials used in this solar blanket also impact it’s capability and durability in severe weather – I have zero concerns leaving this out in extreme conditions like I’ve seen in places like Death Valley or the upper peninsula of Michigan which is an important consideration for me when choosing equipment that I have to depend on.

The next two photos were taken at 4pm in November (sunset at 4:51 pm) with cloud cover and the sun dipping beneath the trees to the west… 

And there’s something we don’t always see, almost 1 amp still going to the battery right to the very end of sunlight in marginal lighting (fridge off in this picture so no power draw). Not bad at all.

Beyond the solar blanket itself, power needs to be controlled before connecting to your battery, and the 20 amp common positive Maximum Power Point Tracking (MPPT) solar controller is a critical part here in any solar kit, optimizing the voltage matching and current between the panels and your battery.  The unit provided by Offgrid Trek features a backlit, day and night readable LCD display, and both the solar blanket and solar charge controller have two high speed (2.2A!) USB charging ports each so you can charge up to four devices at a time right at the source. This well thought out feature works as advertised and saves your vehicle battery for starting the engine while negating the need for a portable battery pack if you choose to just use the kit for all your charging needs in camp like we do.

Our main power draw concern is our Engel MT-45 fridge, it needs 1-2 amps total in camp, so I’m confident that even under low light conditions this solar blanket is up to the task. Using this in our driveway for the first time, we saw this solar blanket produce 11 amps under the full Florida sun at noon, more than twice as much as our Renogy 120 watt panel makes under ideal conditions. These numbers mean this kit makes more than enough power for any SnoMaster, National Luna, Dometic or ARB fridge on the market while still topping off your battery too.

This kit requires no hard mounting of any kind so it can be moved between vehicles with ease, and it packs down small enough to be easily portable in the included, made in USA bag from Overland Gear Guy.

Some improvements I’d like to see would be a traditional, automotive style replaceable 30 amp fuse at the battery connection as well as a more versatile mounting system. The included carabiners are high quality but don’t lend themselves well to use on or near vehicle paint or the variety of cargo racks or trees etc that the solar blanket needs to be affixed to securely. After a few set ups and tear downs of the panel we ended up setting the carabiners aside and started using some reusable Nite Ize rubber twist ties we had laying around – problem solved. 

The bottom line:

I think it’s pretty plug and play as is, and most importantly this kit just works. It provides more than enough power even under marginal conditions to keep our fridge going for days on end. And while it may not be the least expensive option, it actually does perform as advertised in a variety of lighting conditions and weather that may render those lesser panels ineffective. It also delivers value added when the power goes out at home during a hurricane, fire or earthquake. That peace of mind alone makes this an easy one to recommend to our members. Check out Off Grid Trek for more info on this and other power solutions.

FULL DISCLOSURE: Off Grid Trek provided this kit to the author at no cost for the purpose of this review on American Adventurist.