I got this to use while camping for a CPAP machine. Once you have the batteries on it, it has some weight to it, you need to make sure you push down on them and they click in. The device itself is pretty lightweight, it does have a sturdy handle for carrying it around. It isn't the quietest though, it make noise when you have something plugged into it, there is a fan that turns on. The light is bright and is adjustable, the USBs all work, and it has a separate button to push to use the outlet. It displays how much power is available in the batteries, but I don't know what all that means yet. The outlet is weird, looking at it you wouldn't think it would work with a regular cord as it has a weird outlet cover. It would have been nice if it also had a plug-in to charge the batteries from the device, one less thing to have with you if you need to charge the batteries up again.

I have a ton of Ryobi 40v tools and a full set of batteries that Ive amassed over the years. Picking this inverter up was a no-brainer since Ive got batteries to spare. So far we've used it on camping trips and its great for powering lights and laptops and for recharging phones. It's got a lot more power though and once I've used it to power something more power hungry Ill come back to update

I’ve been using the Ryobi 4-Port 350W Power Inverter for a few weeks now, and it’s been a game-changer! The ability to charge four 40V batteries at once is super convenient, and the 350W AC outlet has been a lifesaver during power outages—I've even powered my mini fridge with it! The multiple charging ports, including USB and Type-C, are perfect for all my devices, and the pure sine wave inverter ensures everything runs smoothly without any issues. The built-in emergency light is a nice touch, offering different brightness levels for any situation. Plus, I feel confident using it with its robust safety protections. 100% recommended.

I am beyond impressed with this super nice power inverter! My husband has needed one of these for a while for his Ryobi batteries. We were super excited to find this one! It came very well packed and secured and everything was 100% true to the ad. It is definitely a heavy duty very durable one. We love that it has the handle so he can easily pick it up and maneuver it wherever it needs to go. This functions perfectly as it should and is a total powerhouse. Very easy to use and all the buttons are well labeled. The instructions that this came with were clear and easy to read and very helpful with getting everything set up for the first time. This is perfect for any camping trip or emergency kit! We are super happy that we came across it and definitely think it's an amazing value for your money and a solid 10 out of 10! Very well made and the quality is outstanding! We really can't brag on it enough!

This is light weight and easy to store out of the way when not using it, it functions well. Easy to use. I highly recommend this.

When I first ordered this I thought it was a battery charger and inverter. To my surprise it requires the 40v batteries to function. I need to read the description more thoroughly. It is very light and feels fragile if dropped. The need for 4 batteries will add weight to this charger. I had only 40V battery but it did work fine, although limited to 1 battery. I'm sure with 4 x 40 volt batteries this outdoor generator will function as stated. The batteries can cost up to $130 for brand name. I'm inclined not to order generic versions due to safety issues. If you have the batteries to use this will make a nice addition to your power needs off grid.

This review is for "Power Inverter for Ryobi 40V Battery, 4 Ports 350W Outdoor Generators, Convert DC 40V to AC 120V Pure Sine Wave Inverter with 6 Output Ports, LED Light for Camping Emergency (Tool Only)", by WaxPar. I could not find an item number, but it's ASIN B0DCJHZK8F. Title and ASIN are included in the review because sometimes reviews get re-sorted and are no longer associated with the correct product.The WaxPar 350W Inverter shipped quickly and was packaged reasonably in a cardboard box. Within the cardboard shipping box the inverter was retail packaged in a plain cardboard box, and within this box was the inverter in an open ended bag and User Manual (full sheet of paper, folded once). According to the User Manual the 120V model is model YX-IV08A, and this is what is printed on the unit itself. (There is apparently also a 220v inverter, model YX-IV088.)The Amazon listing for the WaxPar Inverter contains several confusing and in some cases conflicting specifications/claims. It's powered by Ryobi 40v batteries, but in the Amazon listing it incorrectly indicates the input as 18v input some places, and the photos incorrectly show "19v". The title indicates the output is 120V and elsewhere the claim is "40v to 110v"; my Kill-A-Watt showed the output voltage to be 111v so the 110v claim is more correct. The listing states that the inverter can supply power for several items including a coffee machine and big chainsaw, but these are high current devices and I'm not aware of any coffee makers or chainsaws which could operate on only 350W. One correctly shows just five safety claims. The listing indicated that the USB-C port provides "12V/5A" which would be 60W but in the User manual the USB-C output is listed as QC3.0, 18W. I suspect that the listing erroneously has the 12v/5A with USB-C but it should have been with the 12V output port. The User Guide must be mistaken about the QC3.0 claims for USB-C because the QC standard applies to USB-A; USB-C ports use a standard called Power Delivery (PD). The User Guide also has a mismatch in the model #s, as the 1200v/220v models are shown as YX-IC08A/YX-IV08B on one page but YX-106A/YX-106B on another.I did some testing of the WaxPar inverter in conjunction with a Kill-A-Watt meter and with some items I had on hand down in my shop. With the inverter powered on and the AC powered off the inverter indicated a draw of 1W or 2W at 40v. With the inverter powered on and the AC powered on and no load, the unit indicated a 5W idle draw at 40v with an AC output of 111.8v/59.8Hz. I plugged in a 40W incandescent bulb and the inverter indicated a 43W draw whereas the Kill-A-Watt indicated 34.4W at 111.7v/59.8Hz. I removed the bulb and plugged in a 250W personal heater on low and the inverter indicated a 146W draw whereas the Kill-A-Watt measured 125W at 111.6v/59.7Hz. When the heater was switched to High the inverter indicated a load of 267W and the Kill-A-Watt indicated 242W at 111.7v/59.8Hz. Conclusion: the inverter's wattage display indicates the DC load on the BATTERY, not the AC load a the output. I therefore speculate that the AC output is limited to around 300W rather than 350W, as the "350W" claim applies to the battery input, not the AC output.We can estimate the efficiency of the WaxPar's AC inverter from the data in the previous paragraph. With the 40W bulb we see a 43W draw from the battery with a 34.4W AC load. That's (34.4W)/(43W) = 80% efficient. Not so great, but efficiency tends to increase with a larger load. With the personal heater on LOW it's (125W)/(146W) = 85.6% efficient and on HIGH it's (242W)/(267W)= 90.6% efficient. Not bad at all.I LOVE that the WaxPar inverter has a separate ON/OFF switch for the AC output! Some might find this a nuisance as it requires one to use two buttons in sequence to turn on the AC output: first power on the unit and then power on the AC. But I think this is fantastic because it allows one to use the 12v or USB outputs without wasting a lot of energy powering the AC port when the AC is not needed.I went back and inserted a datalogger between the battery and the WaxPar inverter in order to assess the accuracy of the inverter's display. The datalogger I'm using has a resolution of 0.1A, so the accuracy will be within 4W. At idle the display showed 40v/2W and I measured 41.07v@0.0A=0.0W, which is within 4W. With the 40W bulb the display showed 40v/43W and I measured 40.94v@1.0A=40.94W, which is within 4W. With the heater on LOW I the display showed 40v/142W and I measured 40.60v@3.4A=138W, still within 4W. With the heater on HIGH I observed 39v/297W on the display and 40.06v@7.3A=292W on my datalogger, a difference of 5W. So it appears that the voltage display on the WaxPar inverter is consistently about 1v high and the Wattage display is accurate to within 4W. To be fair, the datalogger has not been calibrated so the WaxPar inverter could be the more accurate reading, but I doubt it.I tested hot-swapping batteries on the WaxPar inverter. In other words, with an AC load running from a single battery, I plugged in a second battery then removed the first battery. This works just fine but you must wait several seconds after plugging in the second battery before unplugging the first battery as the inverter takes several seconds to acknowledge that a second battery has been inserted.I tested the WaxPar Inverter's USB-C output port with an iPhone XR which was completely dead. When first plugged in the inverter indicated a 16W draw and I measured an output of 11.9W (5.1v/2.34A). Once the iPhone "booted" the USB-C output changed to 9v and the inverter indicated 20W whereas I measured 16.0W (8.99v@1.78A). I do happen to own USB-C cables with 12v and 20v trigger chips. Both cables triggered a 12v output which measured 11.91v when idle. The inverter apparently does do PD with a maximum of 12v. I attached a 1 ohm power resistor and the inverter indicated a 16W draw and I measured 13.58W (11.32v@1.20A).I then tested the WaxPar Inverter's USB-A port with the same iPhone XR, now at 3% charge. The USB-A port did not negotiate a higher voltage (no QC) and the inverter indicated a draw of 16W whereas I measured 13.58W (4.81v@1.55A)I tested the WaxPar inverter's 12v/5A output and measured 12.25v with no load. With a 1 Ohm power resistor the inverter indicated 18W and I measured 15.3W (12.07v@1.27A). With two resistors in parallel it read 33W and I measured 30.8W (12.14v@2.54A). With three it read 49W and I measured 45.5W (12.10v@3.76A). I chose not to try four resistors in parallel as this would put the output right around the rated 5A and I don't want to risk damaging the unit.Finally, the WaxPar inverter has a light on one side which is claimed to have 300 lumens. I have no objective means to measure this output, but it works fine and seems plenty bright to me.Overall I'm extremely pleased with the WaxPar 350W Inverter. I chose not to stress test the AC output, but I speculate that the output is closer to 300W rather than 350W given that the panel indicates the battery load rather than the AC load. The USB-C, USB-A, and 12v outputs all check out and the light is a nice addition. The separate AC ON/OFF switch, four battery slots for up to 4x run time, and hot-swappable batteries are all tremendous features! All in all a great value for $106, better than Ryobi’s OEM single-slot 300W inverter for less than $10 more.

This is a nice to have unit, but it has one fault. When you switch add or remove a battery it shuts power for about a second which is no good for my applications. Other than that it is great that you can install 4 batteries and it draws first from the more charged ones and when they equalize charger from all at the same time.