EnginStar Solar Generator, 300W Portable Power Station, 296Wh Lithium Battery Backup w/Two 110V Pure Sine Wave AC Outlet for Camping Road Trip RV, 80000mAh Sufficient Power Supply for Blackout
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Availability:
In Stock.
Arrives
Wednesday, Jun 3
Color: Green
Features
- Portable & High Capability Portable Power Station 300w - with 9 x 5.5 x 7.5 inch body size, compact and easy carry on the go, 300 watt-hours capability of power, great companion for outdoor off-grid activities, 80000Amh sufficient to power for extending explore nature, camping, travel, hunting, and more
- Cleaner & Reliable Power Supply - 300 watt solar generator with smart battery management system manages, Two pure sine wave AC output provide stable power; cleaner power supply with built in lithium battery, easy to recharge; Equipped with 8 outputs: 2x 110V AC ports, 3x USB output (including 1x USB C 18W), 1x 12V Car port, 1x 12V DC, 1 x 24V DC 5.5x2.1mm barrel ports, multiple devices charge at the same time with both AC and DC outlets
- EnginStar 300w power station with multiple recharge options: EnginStar solar power generator can Quickly recharge with AC wall adapter stay at home(fully charge in 7 hours), connect with solar panel 12-25V solar panel (solar panel sold separately in EnginStar store) in sunny day outside, or car charger on the go of road trip
- ADVANCED PROTECTION SYSTEM: 300w battery pack equipped with overloading, over discharging, overcharging, overheating, and short circuits, reliable performance, extensively tested and certified by battery standards set by UL, 1000 cycles rechargeable power bank, longer life span
- Package Contain and Battery Maintain: 1*EnginStar Rechargeable Electrical Power Station, 1*User Manual, 1*Home Charger, 1*car charger cable, 12 months limited service time(from the date of purchase); Recommend fully charge it every 2-3 months to keep the power station in good work condition, recharge in time before drain all the power
- Tips for protecting battery station: 1. Fully charge the electricity power station before using 2. If it is not used for a long time, the stored battery should be recharged every 3-6 months, and it is appropriate to keep it at 40%-70%. Recharging the battery before it is completely exhausted 3. The battery should be stored in a dry environment at 40F~100F (4C~35C) or in moisture-proof packaging. Keep away from heat sources, and dont place it in direct sunlight
- Note: 1. This 300w portable generator only support lower than 300Watt Hour device, it may not support large capacity product(Electric Grill/ Induction cooker/ Microwave/ Refrigerator/ Heater) and more 2. It is normal when you turn on the ac output button, the red triangle shows up for checking AC output and will disappear in 3-5 second
Brand: EnginStar
Wattage: 296 Watt-hours
Fuel Type: Electric
Power Source: Battery-Powered/ Solar Powered
Recommended Uses For Product: Camping
Item Weight: 6.5 Pounds
Voltage: 110 Volts (AC)
Output Wattage: 300 Watts
Special Feature: Overload Protection, Short Circuit Protection, over discharging protect, overcharging protect, overheating protect See more
Included Components: solar_panel,charging Cord
Wattage: 296 Watt-hours
Fuel Type: Electric
Power Source: Battery-Powered/ Solar Powered
Recommended Uses For Product: Camping
Voltage: 110 Volts (AC)
Output Wattage: 300 Watts
Additional Features: Overload Protection, Short Circuit Protection, over discharging protect, overcharging protect, overheating protect
Engine Type: 4 Stroke
Total Power Outlets: 2
Current Rating: 8 Amps
Engine Power Maximum: 300 Watts
Starting Wattage: 300 Watts
Running Wattage: 300 Watts
Frequency: 60 Hz
Color: Green
Material Type: Plastic, Aluminum
Brand Name: EnginStar
Included Components: solar_panel,charging Cord
Model Name: R300
Model Number: R300
UPC: 645716648568
Manufacturer: Hengke Energy(GuangDong) Co., Ltd
Manufacturer Part Number: R300G
Item Type Name: Outdoor Generator
Item Weight: 6.5 Pounds
Item Dimensions L x W x H: 9"L x 5.5"W x 7.5"H
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Wednesday, Jun 3
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Black
When I ordered this I was only 2 days away from going into the field for a military training. I had forgotten to get a portable battery to keep my CPAP running while I was out there. It shipped very quick and I had it just in time. It’s very easy to use and works great from multiple nights without power. The battery lasted 3 days using my CPAP every night and charging my phone. It’s small enough to carry in a backpack which makes it very portable. I even used the flashlight setting on the back to light up my tent when I needed to see.
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Reviewed in the United States on May 17, 2026 by Korey
Color: Black
I purchased this Power Station to power my CPAP while camping. I tested other out with my CPAP. I have a Resmed Airsense 11 CPAP with Humidity and heated hose. I plugged in my CPAP using the 110v outlet on the power pack. Turned on the power pack and then the CPAP. I disabled the Humidity and heated hose on the CPAP and the display on the power pack read 37v. When I put the face mask on and the volt display didn't give any volts reading. The CPAP was still working so I went to sleep with 5 power bars on the display. Woke up 8 hours later, still showing 5 power bars with CPAP still working! Day 2, started with 5 power bars and did the same test again, same results again, only the power bank had 3 power bars showing! Day 3, same test, started with 3 power bars BUT 4 hours into my sleep the power bank shut down. The display showed 0 power bars. I then fully charged the power pack and performed the same test as above with the same results!!!! In conclusion, I was able to power my CPAP for approximately 20 hours on 1 charge!!!! O have to assume that others who left reviews stating that they only got 5 hours of run time from the power pack while using their CPAP, were probably using the Humidity or tube heater options on their CPAP which would explain the lower run time. Charge time was about 6 hours when plugged into my house 110v outlet. Haven't used the cigarette lighter power cord for 12v charging. This power pack looks like it will fulfill my needs while camping. I can recharge this power pack using the 12v cord while traveling from location to location. I will update when possible.
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Reviewed in the United States on March 30, 2026 by bill5498
Color: Black
Worked great for baseball practices. I use it to power our pitching machine!
Reviewed in the United States on May 26, 2026 by Wes
This EnginStar 300W power station has become my reliable companion for camping trips and emergency backup power. At 6.5 pounds and compact dimensions, it strikes an excellent balance between portability and capability that makes it genuinely useful for outdoor adventures. The pure sine wave AC outlets provide clean power that safely runs sensitive electronics like laptops and cameras without the compatibility issues found in modified sine wave units. 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. Battery capacity at 296 watt-hours proves adequate for weekend camping scenarios. Realistic runtime includes charging phones 15-20 times, running a laptop for 4-6 hours, or powering LED lights for multiple evenings. The LCD display clearly shows remaining capacity and power draw, helping with energy management in the field. The multiple charging options add real versatility. Wall charging takes about 7 hours as advertised, car charging works well during travel, and solar compatibility (panel sold separately) provides off-grid recharging capability. Having all three options covered means you're rarely stranded without power options. Build quality feels solid for the price range. The housing withstands typical camping abuse, and the various ports and switches operate smoothly. The integrated LED light serves as a useful emergency illumination source, though it's not particularly bright. The protection systems appear to function properly - the unit has safely handled various load scenarios without overheating or shutdowns. Battery management seems effective, maintaining consistent performance through numerous charge cycles. Limitations include the 300W power ceiling, which rules out higher-draw appliances like microwaves or space heaters. The cooling fan can be audible during heavy loads, and charging time is relatively long compared to some competitors. The maintenance requirements are clearly explained and reasonable - periodic charging prevents deep discharge damage, and proper storage guidelines help preserve battery longevity. Bottom Line: Excellent portable power solution for camping, emergency backup, and mobile electronics needs. The combination of capacity, portability, and multiple charging options makes it valuable for outdoor enthusiasts and emergency preparedness. Best for: Weekend camping, RV trips, emergency backup power, outdoor photography, remote work setups
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Reviewed in the United States on July 13, 2025 by Daniel P.
Color: Yellow
I’ve been using the R300 for a little while now, and it has quickly become an essential. Whether I’m managing my business operations or catching up my virtual classes, having a dependable power backup is non-negotiable. If you live in an area with frequent power fluctuations or if you want to work / study from anywhere, this is perfect for keeping your essentials, basic electronics running without a hitch. It’s quiet, efficient, and holds its charge well even when stored for days.
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Reviewed in the United States on May 8, 2026 Reviewed in the United States on May 8, 2026 by felix sanchez
Color: Green Grey
It's a good product. I bought it mostly to power my dash cam while it's parked on the street when I am at work, because I didn't want to deal with the hassle of drilling through the firewall to install a permanent connection to the car battery. The big downside of this power station is that none of the USB ports support QC or PD fast charging. This is a huge missed opportunity for the manufacturer not to include a chipset that supports fast charging of cell phones and laptops. The added cost of the fast-charging chipset would have been small and well worthwhile. The solar panel works fast. The most power I have seen from the solar panel is about 20 watts when charging the power station. It took about 4 hours to charge the power station from 50% to 100%. Some pictures on the Amazon page show a 10A output capability on the cigarette lighter port, but the unit I received only shows 8A.
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Reviewed in the United States on March 30, 2026 by StevieQ
Color: Yellow
Works well but can be slow to charge a phone. stays charged for a very long time. I think it's a good PowerStation for the price. have used it to charge a phone and to blow up a mattress and it still had a ton of power left
Reviewed in the United States on May 20, 2026 by Katie Threatt
Color: Grey Green
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 ...
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Reviewed in the United States on February 9, 2026 by jackbnimble