EnginStar Portable Power Station 300W 296Wh Solar Generator

This EnginStar 300W power station has become my reliable companion for camping, ballgames and outdoor activities.. It's lightweight and very versatile. We take it with us to power the iphone chargers and inflate air mattresses and rafts. All outdoor adventures would not be complete without it. I don't think we could do without it. I have run electronics like laptops and cameras without any issues. I've successfully powered my laptop for several hours, charged multiple devices simultaneously, and run a small LED light setup without any performance issues or device problems. I even ran a blender for on the beach smoothies. The battery will last 2-3 days with the occasional charge up of devices and the use of fans. We can power a fan all day if need be. It charges in about 7 hours and even will charge in your car or by solar. It even has a bright flashlight if need be. There is a convenient switch from AC to DC power as well as ports for USB and USB-C. Our family would be lost without this Enginstar Power Charger. We highly recommend it. And think it would be a great addition to any family!

I drive UBER about 12 hrs a day and I wanted to have a way to keep sandwiches and water cool and fresh here in the Arizona Desert Heat (sometimes over 110 degrees). So, I purchased a small 16 qt (VIVOR Car Refrigerator) cooler for my car that runs off of the cigarette lighter outlet in the back. However, when I turn off the ignition the cooler would turn off so I would have to unload everything overnight. My solution was to purchase this 300 W Portable Power Station to run the cooler and then when the ignition was on the unit would recharge. Over this weekend the unit kept the cooler running at 35 degrees for 24 hrs with the car sitting in the sun during the day and after 24 hrs it was still at that temp. The unit did finally go dead after about 32 hrs and the cooler was at 50 degrees but I am very happy and impressed with the unit. One of the favorite things about it is that it will charge while running the cooler, and it tells me the power going into the charger from the lighter plug (~ 34Watts) and the power being drawn by the cooler (~32Watts) so I can monitor where it is at along with the battery charged state. At the end of my day/night of driving it is completely charged and the cooler is ice cold. I would definitely buy it again, in fact I would buy 10 more if I hade a need for them. Very Happy Customer and would recommend it for anyone with similar needs. As a bonus I can monitor the temp from my phone as I am driving and adjust it if I so desire with the temp slide bar in the app.

I recently purchased this portable power station, and it has quickly become one of my go-to pieces of gear for outdoor activities and emergency power backup. Whether I’m camping, road tripping, or facing a power outage, this device provides reliable and consistent power for all my essentials. Key Features I Loved: Power Capacity: The battery size is more than enough to charge my phone multiple times, keep my laptop running, and even power small appliances like a mini-fridge. It has a solid capacity, and I never worry about running out of juice. Also I used it for my husband's Cpap machine! Lasted for 3 days! Multiple Outputs: It offers a variety of output ports, including USB, AC, and DC options, allowing me to charge multiple devices simultaneously. The addition of a fast-charging port is a great bonus. Compact & Lightweight: Despite its impressive power, the unit is surprisingly compact and lightweight. It’s easy to carry around and fits nicely in my car or backpack without taking up too much space. Durable Build: The design is rugged, and it feels sturdy. I’ve taken it on a few trips now, and it has held up well to the elements, including a bit of rain and rough handling. Solar Charging Compatibility: I love that it’s compatible with solar panels (sold separately). It’s great for long camping trips or emergencies when there’s no access to an outlet. Areas for Improvement: The only minor downside is that it takes a bit of time to recharge fully if you’re using a standard wall outlet, but this is typical for larger capacity units. The solar recharge is a fantastic option but depends on sunlight availability. Overall Verdict: This portable power station is a fantastic investment for anyone who needs reliable power on the go. It’s versatile, well-designed, and offers great peace of mind, whether you’re off the grid or just need a reliable backup power source. Highly recommend!

I bought this generator for dry camping to power my CPAP in the RV. I have only used it once so far and it failed slightly. I think it was my fault however so another test of its charging will be needed. I think i left it powered on after charging so it didn't last the whole night when the CPAP was plugged in. Again, my mistake. Charging takes a while. I'm still a newbie with the solar, so that no doubt contributed to the lack of sufficient charging. I started at 8am charging with the 60w solar panel and by about 6:30pm it had charged 60%. I was not watching it the whole time so it got shaded a couple of times. Not sure if that contributed to only charging 60%, but I will continue to attempt a better charge in the future. It does charge relatively quickly when plugged in. I got it at 20% and took less than 2 hours to fully charge.

March 16, 2026 Update: Been using this power station on and off including with 100w solar panels ... still performing very well and no complaints so far. One item to note, it's not really built rugged and it will require a large weatherproof electric-box or equivalent, to use in an outside dusty, wet work environment, otherwise you run the risk of damaging it or worse shorting something on it since all ports are wide open. This dawned on me recently when I got caught in torrential rain while using it and had to rush it back to the truck and dry everything off carefully. ======================================================================================= This is the third brand I'm trying ahead of a planned semi-off-the-grid trip on a budget, and as a permanent UPS system (Uninterrupted Power Supply) replacement to ensure power continuity for my Internet service, sump pumps and various other sub 240w surge devices as part of my periodic swapping of current UPS devices which are no longer viable. As such I have purchased 3 of these 300w EnginStar units and as it turns out they are far more cost effective and powerful, then some of my most expensive UPS units NOT attached to my computers which now after many years require very expensive non-standard battery replacements (e.g. APC units NOT attached to my computers which can run from $113 to $320 per battery configuration). I also plan on taking a variety of other standard non-solar charging batteries on the trip, and I'll have the car lighter/battery connection as a last resort, but absolutely don't plan on actually using it as I've read too many horror stories where people run down or damage their car batteries and electric systems with all kinds of experimenting that doesn't make sense to me considering that the car battery is meant for a select and specific type of usage, recharging from your alternator, slow trickle with a controlled system or jump start when depleted and in a very controlled fashion. So far I'm cautiously optimistic that this unit may be the answer to what I'm looking for in a total sub $200 configuration including the solar panels for light duty work and ready standby UPS electricity availability. I will update more in a couple of weeks after I use it on a daily basis with various loads and under various scenarios. I'm evaluating this unit as compared to an: Apowking Portable Power Station 300W, Outdoor Solar Generator and an Anker Portable Power Station SOLIX C300 300w which was the most expensive of the three and my least likely to recommend for overall price/performance/design/outlets and inputs, or solar panels. Just so we all know I'm doing apples to apples, all are rated for 300w and about the same Wh give or take as follows: 220Wh for the Apowking; 288Wh for the Anker and 296Wh for this unit EnginStar Solar Generator. All have the option for solar charging; AC charging plug-in to outlet and DC charging via a cigarette lighter port from your car or equivalent. -On sale (Amazon flash) this EnginStar is the least expensive unit, the most power, best design and best overall performance and flexibility. -Right out of the box this unit had 2 bars of standby charge and funny enough so did the other two units - exactly 2 bars. -Design wise, this unit far outperforms the other two for what you'd reasonably expect in types and numbers of outputs and inputs. In fact, you would have to combine both the other 2 units to get most of what you get on this one unit and you may still be missing some. -Of specific note, this unit has the very best display with the most comprehensive information and built in intelligence on data that you actually need to know about and monitor in the field. It doesn't require any ancillary app or connectivity complications to your phone like the Anker which also doesn't give you the full spectrum of data that this unit displays. The Apowking was better than Anker, but still nowhere near this EnginStar. -This unit will show you which connections are getting what power both input and output, and you can adjust what devices you hook up accordingly to maximize what you need fastest which makes it very clever and useful. -This unit comes with a power attachment which looks like a laptop power unit (2 pieces) and delivers a strong 59W input making recharging via AC a breeze. It also has a cigarette lighter attachment which of course will be limited to output from your car and which I didn't test at all. It compares well with the Apowking which has a similar set of attachments but charges much, much slower on AC and also with the Anker which I found actually charged relatively fast, but was lacking ANY attachments other than for the solar panel and a lone USB-C cable. Very strange that it's advertised as an off the grid unit when it doesn't even include a basic POWER BRICK which you have to pay a lot more for because of the power requirement. -This unit allows passthrough charging, meaning it allows you to hook up your outputs and use them/charge them while you're plugged into an outlet making it very clever and convenient that you don't have to que up stuff while the unit charges. The Apowking had a similar feature albeit much less power in and out. The Anker was glitchy at best and downright unreliable at worst, as it frequently freaked out with full outputs loaded and plugged in -- yet another reason not to recommend it. -I tried three versions of solar panels, Anker 60w, Apowking 60w mono-crystalline and Voominhtec 100w mono-crystalline. Of specific note - the Anker supplied solar panels ABSOLUTELY DID NOT charge at all unless in full blown sunlight therefore I can't recommend them - they had not even a trickle of power in just plain daylight, or when exposed to other sources of light. The Apowking and Voominhtec both performed with limited sunlight and other sources of light. Of course the output was lessened accordingly, but still charged as long as there was sufficient daylight or other sources of light. -I performed separate tests over 3 days with the solar panels to make sure I had repeatable test scores (approximations) for each unit. As expected the 100w charged quicker across all units, but both of the 60w panels in the other brands also performed very well with the specific note that the Anker requires full blown sunlight or it will simply not work at all. Price wise the Apowking 60w and the Vominhtec 100w were extremely competitive and have a nice on panel direct connections for USB-A and USB-C that did an awesome fast double duty without any problems with additional devices connected in addition to the power station. The Anker has more convoluted connection and no additional output for anything except the power station. The Anker panels are also much more expensive without any notable differences in build, power, or convenience and the pitfall of only working in direct sunlight - for this reason once again I can't recommend the panels at all. -Of the three units, only EnginStar and Apowking can perform well as a UPS replacement primarily because of the 2 prong/3 prong outlets they have readily designed into the units and also because both can provide uninterrupted passthrough power even when there is an electric outage without blinking (i.e. doesn't need to switch off and on like other UPS units) therefore my devices don't reset or lose power unexpectedly - these make them a multi use device in my configuration and extremely flexible traveling, around the house and around the yard without needing to run extension cords to various locations at the pool, gazebo or shed. That's it for now ... more to follow in a week or two ...

This is a great little power source. The battery stays charged for a long time. Lightweight and easy to carry. I can go anywhere with it and I can depend on it. Don’t hesitate to purchase it. You won’t be disappointed!

This is an awesome battery pack!!! I just got home from showing at our local 4h fair and I am truly impressed, for the money it is well worth it. It stayed charged 5 days and was well used for charging phones until I had to pull out the solar panels. I only gave 4 stars because it is slow charging with the solar panels but I expected that anyway!

I bought this to power my CPAP device during camping/hunting trips, and the first time I used it everything went great. I went to bed somewhere between 10-11pm and woke up around 7-8 am wearing my CPAP all night and the power unit only went down to something like 50-60%. So I figured, "Sweet, this thing will last at least 2 nights if needed". Anywho, fast forward to this last weekend; I had the unit fully charged and I was taking my wife and boys on an overnighter campout where this would be needed again. Starting the night (Went to bed around 9-10 pm), it was working just fine. But I woke up around 2 am with a super dry mouth and struggling to breath, so I checked my CPAP and found that it was off. Went to check the power bank and found it completely dead; it hadn't even lasted ONE full night this time. There were 2 differences between this and last time that may have contributed, but I'd be shocked if these 2 factors really tanked the battery that badly this time. The 2 things I did differently this time is I had 2 phones also plugged into the unit overnight (neither of which fully charged before the unit died) on this campout whereas last time I had 1 phone plugged in and the other difference is that at night the temperature was significantly colder than the last campout. I know that low temps can affect battery life, but I mean this straight up took a nose dive. And adding one more phone to charge shouldn't be anything to this, so I don't know what happened. For the sake of giving a thorough review, I'll discuss the other aspects of this device as well. 1. When it charges devices, it actually is able to charge them pretty quickly when paired with a good cable (even if it didn't charge my devices all the way, but whatever). 2. The design is sleek and fairly slim, I appreciated that it was easy to fit into a small duffle bag with all my cables and CPAP parts without it being too big or awkward to fit everything nicely. It is a bit heavy, but this is supposed to be a pretty hefty power unit so I figured that would be the case. 3. I'll have to try it some more before I really say it was 100% worth the money. Here's where I stand currently: My hypothesis is that if I could keep it somewhat insulated (but still with good ventilation, there are cooling fans built into it) and ONLY run my CPAP off of this, then it would probably handle that great. But that means I'll need to plan on bringing a separate power bank just for charging devices. So it is really going to be only good for one thing for me, however, compared to just about any of the other suitable options capable of power a CPAP, this one is probably the most affordable. Pros vs. Cons I guess. I kinda wish I would've just waited and gotten a better (and slightly more expensive) one, but if I can get this to work for my CPAP through at least one night (I am planning on getting one of those solar charging panels to charge it during the day) then I'll be content. Those are my thoughts. Take them to heart, or don't. I don't care. It's your money. You can do what you want with it. Go ahead and buy this or go buy like 15 bags of gummy bears, makes no difference to me. Thank you for reading all the way through this. Don't forget to like, share, and subscribe. See you on the next episode.