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  • This is an awesome little inverter which I'd been checking for in my local store and online almos...
  • August 05, 2019
  • Recommended Product

This is an awesome little inverter which I'd been checking for in my local store and online almost daily after seeing it unveiled on a tool review website six months ago. My initial impression of this inverter is that it is as good as I'd hoped it would be. It does deliver a pure sine wave and I'm surprised that this fact isn't mentioned more prominently on the packaging or in the advertising. It's a big deal for me, and a feature which I really wish had been included in Ryobi's 150W 18v battery inverter which was released a couple of months ago (model RYi150BG). I have a cheap 20" box fan which runs fine on household AC, but when running from any of my modified sine wave inverters (MSW) including the Ryobi 18v RYi150BG the box fan runs a little slower, draws a little more power, and is accompanied with a noise which sounds as if the fan is struggling to turn. This same box fan operates perfectly on the Ryobi 40 inverter and it sounds and feels exactly the same as when operating on household AC. I did make some measurements to try and determine the conversion efficiency of the inverter. I used my cheap 20" box fan (3 speed settings) and a corded Ryobi model HG600 heat gun (2-speeds and variable temp) for the loads. I used a Watt's Up meter to measure DC voltage/current/power drawn from the battery and a Kill-A-Watt meter to measure AC voltage/frequency/power drawn from the inverter. First I measured the draw from household AC as follows: box fan on lo/med/hi = 56/66/76 watts and heat gun on lowest heat setting and fan on lo/hi = 175/206 watts. I then measured these same loads on the Ryobi 40v inverter and got the same results. This suggests good quality AC output. Next I compared watts drawn from battery to watts drawn by load using the two loads mentioned before to create 0/56/66/76/175/206/262/272/282 watt loads. What I observed was 7.25 watts drawn from the battery when the inverter is powered on with no AC load, a battery draw of about 15 Watts more than the load for 56/66/76 Watt loads, a battery draw of about 30 Watts more than the load for 175/206 watt loads, and a draw of about 45 watts more than the load for 262/272/282 watt loads. For all loads the frequency remained steady around 60Hz and the voltage dipped just a little as the load increased from no load (122v) to nearly full load (119.3v). I'll conclude that the inverter produces a decent AC signal, uses 7.25 Watts when idle, and has an average efficiency of ~85%. I did not try to measure radio frequency interference (RFI) nor did I observe the AC waveform on an oscilloscope. Again, I've now measured the efficiency at about 85%. Therefore the "1.1" constant I've provided in the Q&A section should actually be "1.15", e.g. estimate run time in hours as (Battery Wh)/(Watts consumed * 1.15). Overall I'm extremely pleased and I'm sure this little inverter will see a lot of use. I checked the USB A port and it charged my iPhone at more than 1.5A which was fine. I don't have any devices which can utilize the higher charge rates of USB-A or USB-C so I can't comment on how well these do or don't work. The light was the only disappointment for me. Actually I'm not sure if I care whether the device has a light or not, but since it has this feature I figure it should work. Actually it's the light *button* which is infuriating. One should be able to select one of three light modes by pressing the light button: on, off, and strobe. But I find that I have to press the button many, many times before the light will change mode, and when changing modes it seems to randomly select the next mode. This could just be a defect with my unit and it's not important enough to me to bother with attempting an exchange, but I thought I'd mention it in case other reviewers experience the same.

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Toolboy

45 to 54, Male
30 out of 30 people found this helpful
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By: Toolboy
  • I bought this, along with a 5 amp battery to replace a power setup to run my internet router and ...
  • August 10, 2019
  • Recommended Product

I bought this, along with a 5 amp battery to replace a power setup to run my internet router and modem during a power failure. I was using another inverter plugged into my running car with a a 50 foot extension cord running into a basement window where it connected to another 25 foot cord leading to my router. That inverter was another brand and cost about $130 for only 150 watts. This inverter just sits by the router and I plug it in when needed. It has Sine Wave power with 300 watts which is very important.

Chuck

9 out of 9 people found this helpful
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By: Chuck
  • Since California is intermittently shutting off our power due to their new wildfire public safety...
  • September 29, 2019
  • Recommended Product

Since California is intermittently shutting off our power due to their new wildfire public safety power shutoff it is becoming more and more important to have back up sources of power. This Ryobi 40 volt powersource 300 watt battery inverter is absolutely perfect for these types of situations and more. With its (1) - built in USB C port, (1) - USB A port and its (1) - 120 volt outlet it is perfect for charging or powering cell phones, tablets, laptops, fans, lighting, radios, small t.v's. and anything else that doesn't exceed its capacity. Since it has pure sine technology (clean electricity) you don't have to worry about it damaging your sensitive electronics. Some of the contractor grade generators out there don't put out clean electricity and would damage your electronics if plugged into it. I now have (4) of the Ryobi 40 volt batteries in different amperages (Ah) ratings from all my outdoor power tools. With these batteries fully charged and this inverter I will be able to power and charge all my small electronics as needed. With the built in LED light on the inverter you can move it around the house providing both light and power which is very convenient. With the built in handle and the anti slip material on the bottom and the back of the inverter it is very well engineered. All in all Ryobi did a fantastic job of adding yet another piece of equipment to their great line of tools. This inverter comes with a 5 year limited warranty. I have had Ryobi tools for the last 20+ years and the only problem I've had with one of them was the trigger on my leaf blower which they fixed for free. All in all Ryobi makes great tools and I'm excited to see what they think of next.

Pros All In One, Durable, Easy to Use, Good Size & Weight, Light Weight, Long-Lasting, Strong, Sturdy, nice bright built in led light

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Jason

Fairfield, CA, USA
45 to 54, Male
8 out of 8 people found this helpful
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By: Jason
  • 300 watt 40 volt
  • July 30, 2019
  • Recommended Product

I mainly purchased this for blowing up my twin size air mattress for camping. Runs the air pump with no issues. Comes with a built in light on it which is great if you are setting up camp at night.

John

5 out of 5 people found this helpful
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By: John
  • Fits all RYOBI 40-Volt Batteries that I like..... I like that RYOBI 40-Volt battery powered inv...
  • September 21, 2019
  • Recommended Product

Fits all RYOBI 40-Volt Batteries that I like..... I like that RYOBI 40-Volt battery powered inverter provides convenient, on-the-go power and uses it immediately during power outages. this inverter is perfect useful for powering laptops, tablets, cell phones and other small electronics. This compact and lightweight design is compatible with all of my existing RYOBI 40-Volt batteries making endless power even easier. It has 1 USB-A outlet, 1 USB-C outlet and one 120-Volt wall outlet for convenient and reliable power. Flashlight to push on steady or push on flashing. It is very handy, I love this Ryobi 40v battery Inverter. There are so many useful things that I can plug my electronics into the inverter. I use this to run my internet router and modem for my security cameras & doorbell during power outage. This inverter just sits by the router and modem and I plug it in immediately during power outage.

Pros All In One, Durable, Easy to Use, Good Size & Weight, Light Weight, Sturdy

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VR

Smyrna, GA
55 to 64, Female
4 out of 4 people found this helpful
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By: VR
  • October 02, 2019
  • Recommended Product

This Ryobi battery-powered inverter will be a valuable tool during times that electrical power is unavailable and you need power of up to 300 watts on-the-go or during an outage. This price is for the tool ony, the battery and charger are sold separately. This is great if you already have other 40V tools because all Ryobi 40V tools, batteries, and chargers are compatible with each other. With a charged battery, you can run or charge small electronics or you can use the built-in LED task light. It has a USB-C port, a USB-A port, and a 120V outlet (using 2-prong or 3-prong plugs) on the side, along with a button to turn On/Off the external LED task light on top of the unit. When this button is pressed twice, the light will strobe. There is also a battery status display on the Power button that glows Green for normal, Yellow for low, and Red for an overload. I love the folding handle that makes it easy to carry from one place to another and the foam padded surface protectors on 2 sides. Of course, it is not designed to run heavy power tools or large appliances , but it certainly can run phones, small laptops, small fans, LED lights, radios, and many other small electronics as long as the wattage is below 300W (it easily powers my 100W can opener). It will also run or charge your USB products. The length of running time will vary depending on AmpHours of the 40-Volt battery you are using. When the internal components sense that cooling is needed, a fan will automatically run to cool it. Just check the wattage of what you intend to plug into this inverter before trying it (Amps x Volts = Watts). As I received this tool for review purposes, I was sent a charger and battery. The battery charger OP403 is like none of my other chargers - I love this one! My old 40V chargers are huge, but this is compact (only about 5"x3.25"x1.5") and not only charges my battery, but it is also a portable USB power source & charger with status lights. I like that the Ryobi batteries have an on-board fuel gauge. The 40V battery that is needed for this tool is currently available for purchase in 2.0Ah, 2.6Ah, 4Ah, 5Ah, and 6Ah sizes. This is just another of the great products from Ryobi. The only thing I don't care for is the plastic packaging because opening it is not easy for these aging hands. Ryobi offers a no-risk satisfaction guarantee and a 5-year warranty.

Pros Durable, Easy to Use, Good Size & Weight, Light Weight

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DoubleL

Pennsylvania
65 or over, Female
4 out of 4 people found this helpful
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By: DoubleL
  • We live off the grid on nothing but solar and wind energy. I got this inverter-generator to help ...
  • October 03, 2019
  • Recommended Product

We live off the grid on nothing but solar and wind energy. I got this inverter-generator to help with those times that we do not have enough electrical power to run my laptop for more than an hour or enough power for my wife's oxygen concentrator. The latter is a low energy concentrator, but it still takes enough power to make it difficult without a backup plan. This Ryobi model works perfectly for both. It powers up quickly with the charged battery and lasts quite awhile - longer for the laptop than the concentrator, but still long enough for my wife's use.

Pros All In One, Easy to Use, Good Size & Weight, Light Weight, Long-Lasting

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Wolfbane

CO
65 or over, Male
4 out of 4 people found this helpful
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By: Wolfbane
  • I was skepticle, It is very handy. Powered my 32 in tv for 5 hours with a 5amp battery. as long a...
  • September 17, 2019
  • Verified Purchase & Recommended Product

I was skepticle, It is very handy. Powered my 32 in tv for 5 hours with a 5amp battery. as long as i have a charged battery i have power for the small essentials

Myryobi1

3 out of 3 people found this helpful
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By: Myryobi1
  • The Ryobi 300 Watt Battery Inverter is perfect for anyone that uses electronics, laptops, tablets...
  • September 24, 2019
  • Recommended Product

The Ryobi 300 Watt Battery Inverter is perfect for anyone that uses electronics, laptops, tablets, cameras, or phones extensively, and does not always have shore power available. It uses any of the Ryobi 40-Volt Rechargable Lithium-Ion Batteries as a power supply, and provides a standard a/c outlet with pure sine wave power up to 300 watts. It’s also equipped with one USB-A and one USB-C outlet for charging the most common phones, tablets and similar devices. I have the Ryobi Battery Inverter teamed with a 4 amp-hour 40 Volt Battery, which will provide 15 phone charges on a single battery charge. This battery inverter will be extremely useful while travelling when shore power is not always available. Highly recommended!!

Pros Easy to Use, Good Size & Weight, Long-Lasting, very convenient portable power source

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Trogo

Knoxville, TN
55 to 64, Male
2 out of 2 people found this helpful
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By: Trogo
  • Super easy to use. The battery charges very quickly. Instructions are easy to follow. The gene...
  • October 12, 2019
  • Recommended Product

Super easy to use. The battery charges very quickly. Instructions are easy to follow. The generator is very easy to carry and use. Lights on the side help you know the status of the charge. The light on the generator is a great feature to use especially when there is little to no light.. I was very impressed to be able to bring to the park for a family outing and allow people to recharge their phones for more photos.

Pros All In One, Durable, Easy to Use, Good Size & Weight, Light Weight, Long-Lasting, Strong, Sturdy

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Ria

Texas
45 to 54, Female
2 out of 2 people found this helpful
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By: Ria