Chad de Alva, Author at American Adventurist : Page 8 of 26

Editor’s Note: This article was updated on 2/10/2020 to include cold weather testing, as requested by our members. Find it below. -Chad

Dometic’s PLB 40 is a truly plug and play portable battery solution that allows anyone to have a dual battery system in any vehicle. That’s right – no custom wiring or additional purchases required. As long as you have a 12V outlet in your rig that can supply 100W, you can plug in the PLB 40 and enjoy an additional 40 Amp-Hours of power that can be used to power whatever you want. This means that you can power 12 V cigarette-style devices like an electric cooler, your USB devices, and two-pin 12V appliances without pulling from your vehicle’s starting battery.

Dometic certainly isn’t the first company to make a portable battery, but the ease of use and a few electric cooler-specific optimizations to the PLB 40 make it a great choice for folks who want to be able to use their electric coolers in just about any vehicle, or have a versatile supply of power in anywhere they may need it.

The number one reason I hear from folks against getting an electric cooler is that they don’t want to have to deal with wiring in a second battery or a adding a dedicated circuit for their electric cooler. While a second battery certainly isn’t required to run an electric cooler in a vehicle, having a constant supply of power is. Since most vehicles have all of their 12V circuits switched by the ignition (for obvious reasons), adding a non-switched circuit has been the minimum effort required to keep an electric cooler powered up when your vehicle is not running. A switched circuit, a quality battery, and utilizing the low voltage cutoff on your electric cooler will work, but you’re still limited in how long you can stay out by the capacity of your starting battery. Yet, by adding a PLB 40 to your system, you don’t have to touch your vehicle’s wiring, and you’re able to add a considerable power reserve.

Literally all it takes to use the PLB 40 to power an electric cooler is to plug it into a 12V outlet on the vehicle and to plug your electric cooler into to the PLB40. The end.

It’s really that simple. While the vehicle is on, the PLB 40 charges up, and once the vehicle is parked, the PLB 40 becomes the power supply for your cooler and anything else you want to plug in, leaving your vehicle’s starting battery topped off. The PLB 40 means that you can run an electric cooler in any vehicle that has a 12V outlet, so whether you’re traveling in your buddy’s rig, or even a rental car, the PLB 40 lets you bring all of the benefits of an electric cooler into any car with a 12 V outlet. Want to use your fridge in the wife’s car for a grocery run on a hot day? Add a PLB 40 and you’re all set. No need to worry about groceries spoiling in the back of a hot car while you’re running errands.

If you’re wondering how long 40 Amp Hours lasts, the answer is – it depends. The size of your electric cooler, how efficient it is, how hot the environment is, and how much you’re getting into your cooler, and what you’re putting into your cooler are all things that will impact the runtime you’ll see from the PLB 40. Dometic advertises 40 hours of runtime when powering a CFX 40 electric cooler for a baseline reference. I’ve been running my PLB 40 with my CFX 75 DZW and as you would expect that with nearly twice the volume of the CFX 40, my runtimes are considerably shorter. I’m also typically running one compartment as a freezer, which requires even more power than a refrigerator temperature setting.

All that being said, PLB 40 is able to keep my Dometic CFX 75 powered up without being replenished for at least 24 hours. If you know the average draw of whatever you want to power, doing the Amp-Hour math is pretty easy, just divide 40 Ah by your total draw. If I’m going to be in the same place for longer, I’ll plug in a solar panel to the back of the PLB 40 using the Anderson SB 50 port, or I’ll plug the PLB 40 into an always energized 12v outlet in one of my trucks. The PLB 40 also accepts AC charging, so if your destination for the night is a hotel or someplace with grid power, you can charge the battery from a 120V source so it’s ready to go in the morning.

The charge controller on the PLB 40 will continue to accept DC input all the way down to 8 VDC, so if you have your PLB 40 drawing from your rig’s starting battery through an always-energized circuit, make sure that you’re keeping an eye on your starting battery’s voltage. Depending on how large your vehicle’s starting battery is, pulling 30 + Ah from it could make quite a dent in your starting battery, and it’s ability to crank your rig over. Having a jump start battery with you is also always a good call. Dometic has this 8 VDC cutoff in place to allow for solar charging the Lithium Iron Phosphate Battery in the PLB 40. This LiFePO4 battery has a couple of advantages over other types of Lithium batteries found in other portable batteries, namely an increased lifespan and the chemistry is more stable (safe) than other lithium designs. Being powered by a lithium battery also means that the PLB 40 is lightweight, and very portable.

The PLB 40 is so easy to move around thanks to its beefy top handle, that you’ll find yourself using it all the time, and you’ll never have to convince yourself to go lug your battery around. Tipping the scales to just past 16 pounds, the PLB can easily be moved anywhere it’s needed by almost anyone. Not only it is lightweight, but it has a small footprint that’s less than eight inches on a side, so it can be stashed in all kinds of places where power is needed.

This size and weight opens doors for how this thing can be used. No power outlets in reach of the kid’s seats in the family hauler? Stick the PLB with the kids, and let them run their devices for the entire duration of your drive (if that’s your thing). Need power someplace in camp that’s not your rig? Grab your PLB. Hosting a BBQ in the backyard, and want to use your electric cooler for easy to access beverages, but don’t feel like dealing with all of the extension cords? You get the idea. If you’ve been lugging around other battery battery boxes where you supply a car battery – you need to experience the PLB’s size and portability. It’s a game changer.

That ease of use however, does come with a price tag and the PLB 40 isn’t cheap. Googling the PLB at the time of this writing turns up prices from $765 USD, and up. With that money, you’re in striking distance of other solutions out there, so just make sure that you’re getting the product solution that best meets your needs. If you’re shopping the PLB 40 against other portable batteries, Dometic has this handy chart that helps potential customers assess the return on investment of a PLB 40 vs. other popular options:

Speaking of value, it would be awesome to see Dometic offer a version of the PLB 40 that had two 12 V cigarette-style ports instead of one 12 V cigarette and one 12 V two-pin. Or at least a two-pin to cigarette-style dongle with the current PLB 40. If you’ve ever unscrewed the 12 V plug from your Dometic electric cooler, you’ve no doubt discovered the two-pin connector hidden inside, but I have far more 12 V cigarette style devices than two-pin devices, so it would be nice to have the added flexibility of 2 cigarette-style ports. The one redeeming part of the 2-pin connectors is that they screw in, so you don’t have to worry about accidentally knocking your plug out. Depending on how you pack your rig however, this may be a clutch feature or it may not make that much difference for you. A screw in connection definitely adds piece of mind, but I have yet to knock out a 12 V cigarette style plug – and I’m probably jinxing myself by saying that.

Yet, for a plug and play, as easy as it gets, “I just want the thing to work”, you can’t go wrong with the PLB 40. Other solutions are going to require purchasing other chargers, adjusting cut-offs, or taking other steps to get the function that the PLB 40 comes with out of the box – and it’s just so nice to just be able to plug two things in and go.

Dometic’s PLB 40 is a pretty awesome piece of technology. Based on conversations I’ve had with other folks who’ve shelled out for one, it’s been exactly the thing that they were looking for to be able to get into the electric fridge game, and they couldn’t be happier. It doesn’t have all of the outputs that other portable batteries have, but it’s true plug and play functionality, portability, and reliable performance make it any easy choice for folks who don’t want to touch their vehicle wiring to be able to run an electric cooler.

The PLB 40 hasn’t missed a beat in my use, which has included multiple trips to Phoenix in the middle of summer. Even when the unit was well heat-soaked with a surface temperature that meant the unit would start to experience diminished performance, the PLB 40 didn’t slow down or indicate on it’s display that it was getting too hot. It’s small size and weight means that you can actually take the unit to just about anywhere you need power, and the PLB 40 is flexible enough to power all kinds of DC and USB powered devices.

Cold Weather Testing:

It’s important to set the stage when it comes to talking about battery performance in cold weather. Most folks figure that cold weather will severely impact the performance of their batteries, based on past experiences starting (or attempting to start) a vehicle in cold weather with a Lead-Acid or other common car battery chemistries. When you attempt to start a vehicle in the cold, your vehicle’s starter needs hundreds of amps from your battery to crank a cold motor over, and at lower temperatures the chemistry of a given battery cannot provide as much current as it can when it’s warm. This is the exact reason that there is a Cold Cranking Amps (CCA) spec on vehicle batteries. When it comes to a high current load, you’ll absolutely notice a difference in battery performance when it’s cold out.

Powering an electric cooler in cold weather is completely different, as an electric cooler is only going to pull a couple of amps or less, no matter how cold it is outside. Plus, the colder the outside temperature is, the lower the temperature difference is between the compartment(s) of your electric cooler and outside, which means that your cooler’s compressor is going to have to run less often to keep your electric cooler temps where you want them. This means less energy is required from your battery. In my testing, I was able to get longer run times out of a PLB 40 with temps near freezing than I was when temps were in the 70’s, and I attribute this to the compressor running less often.

To quantify exactly what kind of difference temperature has on the PLB 40, I ran two tests. In the first test, I used the PLB 40 at 70 degrees F, and applied a constant load of 100 watts, which I pulled through a power meter to see how many kilowatt-hours I could get out of the battery before it hit 50% state-of-charge. I then repeated this experiment with the PLB 40 being cold-soaked and held at 32 degrees F. The warm battery was able to provide a few hundreths of a kilowatt-hour more power before hitting 50% state-of-charge. So yes, the the cold does impact the power output of the PLB 40, but the devices that you’re most likely powering with a PLB 40 don’t pull enough current and will require less energy when it’s cold out, so the difference will come out in the wash.

The PLB’s LiFePO4 battery will hold up to thousands of charging cycles, which means that you can have that many adventures fueled by whatever awesome stuff you can keep in your electric cooler. If you’ve been looking for that missing link in the power supply chain for an electric cooler, or for charging media devices or drone batteries, the PLB 40 is definitely worth checking out.

Full Disclosure: Dometic provided a sample PLB 40 at no charge to the author for the purposes of this review.

Nestled in the heart of the San Bernardino National Forest is Camp Tahquitz, home of the American Adventurist Mountain Rendezvous. Here in a small hollow surrounded by towering pines, our community gathers each September for a long weekend of camping, community, and enjoying spending time outside in the mountains. Starting on Thursday, members are free to arrive when they want and be as active or relaxed over the next few days as they feel like. That’s the beauty of our community events – we’ve got stuff on the schedule, but what you participate in is up to you. Thursday afternoon saw a rain shower that cooled us off and left the forest damp, which would set the stage for a weekend of near perfect weather. By the time the stars were out on Thursday night, folks were busy enjoying each other’s company at various campsites, and you could tell from the animated conversations that all were having a good time.

Many attendees are still showing up late into Friday, and so the day has a more relaxed schedule. Kids are issued lists for the scavenger hunt, and they set off in search of all kinds of items. This year’s shopping list had some items on it that couldn’t be found in camp, and the staff was impressed with the resourcefulness of the kids who put the work in to go find everything on the list. After closing registration for the day, the staff got together with the crew from Tembo Tusk to cook up burgers and hotdogs for the evening’s BBQ Social. A serious thank you goes out to Tembo Tusk for hosting this BBQ and feeding all these hungry Adventurists!

Saturday is when things really get going at Mountain Rendezvous – from trail runs to classes, and the world-class cooking competition, there’s something going on for everyone. Michelle from Leitner Designs, offered to lead a trail run up gold mountain, and a number of rigs lined up to get in on the action. By mid-morning, our first class of the day was kicking off with Drew at Falken Tire putting on a very informative class on tire tech. He did an outstanding job talking about the intricacies of tire design and how they affect performance, which impacts the age-old question of “what’s the best tire for me?” The class concluded with a very important, yet most often overlooked exercise on how to use your vehicle’s weight to determine the correct tire pressure you should be running. Overall, he did a great job turning complex tire-geekery into fun information that benefited everyone. Thanks Drew, and Falken Tire for your support!

Our next class was on Improvised Medicine taught by Dr. Jo Feldman and her research fellow Tiffany. This class was an awesome experience that taught attendees how to work with the things you have on hand to improvise all sorts of splints and other interventions to stabilize and manage injuries in a wilderness setting. The course was very hands-on as Dr. Jo and Tiffany would instruct on how to treat a given issue, and then they would have the class work with the gear provided to manage injuries. It was awesome to see kids working on their parents and vice-versa, and highlights a great point in that if you get hurt, does your family know how to help you out? Dr. Jo and Tiffany did a great job teaching, and we really appreciate them coming out to share their knowledge with us!

With the courses concluded for the day, folks headed back to their respective camps to work on their entries for a Rendezvous tradition – the Camp Cooking Competition. Members who attend our Rendezvous events know how to make some very good food in camp, and I’m continually impressed by the creativeness and quality of what folks can do in the forest. Our cooking competitors could shame any Iron Chef TV show, both in quality and originality. This year they created all kinds of dishes from scratch right in camp, from Reuben sandwiches, to chili verde. By the time everything was lined up for judging, our entrants had covered several picnic tables with their awesome cooking. This allowed everyone to pile their plates high and sample everything prior to casting their votes for their favorite dishes. LT Wright Knives sponsored the cooking competition at this year’s Mountain Rendezvous, providing awesome prizes to the top three dishes by community vote. With the competition concluded, folks gather around our giant fire ring to enjoy a campfire, good company, and another great evening in the billion-star hotel.

Sunday is the last day of the event, and the big order of the day is to give away a literal mountain of gear provided by the awesome sponsors and partners that support American Adventurist and our Rendezvous events. American Adventurist as a community is very fortunate to have the support of so many awesome companies – and we’re really thankful for that support over the last nine years. Attendees get a raffle ticket at check in, and an extra ticket for participating in events like the Camp Cooking Competition, so the odds are very good for actually winning something. With the raffle concluded, folks pack up their campsites and depart for home or other adventures.

Like all American Adventurist events, Mountain Rendezvous gives back to the community, and this year we raised over $2K for the Scouts at Camp Tahquitz. Our events are a great use of a weekend – whether you want to take advantage of everything that’s offered from trail runs to classes, or just kick back and enjoy a relaxing weekend with good people, you can make your Rendezvous weekend anything you want it to be and that’s what’s awesome. By showing up, you’re supporting the local community, and you’ll have the opportunity to take some awesome classes, eat some excellent food, and enjoy good people around a campfire and have a real chance at winning some great gear from some of the best companies in the overland industry. Keep an eye on the forums for information on our events for 2020. Rumor has it that we’ll be moving our Desert Rendezvous to a new, remote location, and we’re excited to share more information about that in the coming months!

A BIG thank you to all of the people and companies who make Mountain Rendezvous possible. To Tembo Tusk, our BBQ social sponsor. To Drew from Falken and Dr. Jo and Tiffany, our instructors for our classes. To LT Wright Knives for sponsoring the cooking competition. To Leitner Designs for leading a trail run, and to all of the awesome companies that supported our event. And of course, many thanks to Camp Tahquitz and the Long Beach Council for letting use their outstanding location again. Special thanks to Greg Richardson for all of the awesome event photos!