let's see what the real comparison runtimes are between the 40 volt and 18 volt when tested on the same tool! interesting stuff. Stay in touch with Facebook: www.facebook.c... check out our swag: www.etsy.com/s...
Great comparison!!! This is exactly what I needed to see & using the fan for a consistent draw was perfect. I appreciate the video & looks like I'll be shooting for 40v power options next week for my b day LoL. Thanks again. Keep the great vids coming.
Thank you for an interesting comparison test. I applaud your creativity in running one tool with 2 different voltage and platform. In the real world, 18v vs 40v batteries would be used on completely different tools. So you hit it out of the park with this information ! Thanks again for your time and effort. I do wish you made a chart to summarize it all...
thank you for the comparison! I just bought a new house and my Fiancee and I were trying to figure out a lawn mower, and I saw so many types of batteries and discovered your video when trying to figure out the difference!
The answer is printed right on the batteries. Comparing Amp-hours (Ah) across different Voltages (V) doesn't work. Fortunately, every Ryobi battery has the Watt-hours (Wh) printed on it. Watt-hours is calculated by multiplying Volts by Amp-hours. If the Amp-hours are the same but one battery has twice the voltage, the higher volt battery wins. The only time you'd need a head-to-head (that would then account for differences in inverter efficiency) is in comparable Watt-hour batteries, like a 2Ah "40V" (it's really 36V) and a 4Ah 18V. Compare the Watt-hours and you'll see which will last longer under the same load. It's really that simple. Edit: Of course the 9Ah 18V battery didn't last as long as the 6Ah 36V battery. That's 162Wh compared to 216Wh. Meanwhile, it beat the 4Ah 36V because that one only puts out 144Wh. Again, just read the batteries and they will tell you.
Was going to post the same. Another interesting thing to see would be how much difference there is in runtime on the ONE+ batteries *directly* in the fan, compared to through the inverter--something I thought he was going to test but didn't. Should definitely expect more time directly running in the fan but would be neat to see how much more.
The one that puzzles me is the 6ah 18 volt going 1:38 vs the 6a 36 volt going 3:40. In theory the 18 volt should always be half as much. I'm guessing the actual inverters are drawing power in different amount (just to power the inverter)
@@jaycarneygiants Yes, assuming the fan in the video requires single-phase 120Vac to run, the inverter needs to work harder to boost and convert voltage from 18Vdc to 120Vac than from 40Vdc. To be more specific, the power switches in the inverter have different amount of power loss at different operating conditions, which would affect the overall efficiency of power conversion, then it determines how much battery power is actually transferred to the load as opposed to being lost on the way.
You should do a comparison putting the 18 V battery directly into the fan and then try it through the inverter just to see the efficiency of the inverter there’s no way to know how much inefficiency the 40 V inverter loses compared to the 18 V so it would be interesting to see what the loss is between the difference of running A six amp hour battery in the inverter and then directly in the fan but I have to say I really enjoyed your video I love Ryobi and it was really awesome to watch thank you for the time you put into that it is appreciated by I’m sure a lot more people than me I’m sure a lot just don’t let you know
Debating between an 18v string trimmer and a 40v. I have 18v tools already so I think the wise decision is to get a larger amp hour 18v battery and just stick with the 18v system. Happy Independence Day! 🇺🇸
For a fair comparison, you need to compare Wh not Ah. Also by weight of the batteries too. The heavier they are, if using same cells and chemistry, the more capacity it probably has.
Great comparison video! i think the 18V-16 aH battery is a dud not worth the money for providing only an extra 21 minutes of run time even though the 6aH capacity is supposedly should have give 50% more run time that the 4Ah battery. But the 9aH battery is clearly the winner of the 18V battery that's worth every penny!
This comment is not exactly relevant but may still be of interest. My 9 year old 40 volt Ryobi batteries now produce around 20 volts fully charged, and they will still run some of the 40 volt tools, but for not as long as the newer 40 volt ones. I was just surprised that 20 volts will power 40 volt tools, but maybe that's just from a lack of understanding....
Great video. I think you forgot to take in consideration that there is less energy loss when you convert 40 volts to 120v than 18v to 120v and that’s why the difference in run time but in theory a 18v 4 amp battery should be able to store the same energy amount as a 40v 2 amp battery because they have the same amount of batteries just different array obviously if they have the same type of 18650
What I would love to see is you to use one of the sine wave inverters the 1800 watt inverter just put one battery in the 4 amp hour and then the 6 amp and see what the difference in the time is supposedly the sine wave inverter is going to be more efficient I am really curious to see how much longer the run time is anyways that's a suggestion your video was great it was very useful
The most maddening thing about these 40v tools is that there's no technical reason you can't use two of the 18v batteries you already own to power any of these tools. They could have made the form factor to accommodate that arrangement on every one of these tools. That makes me spitting mad. Not only do many already have many 18v batteries, but who want to spend $200 on one 40v 4Ah unit. When it fails (and it will) you're out the entire investment? I've used a 3D printed adapter, and I know this works. Problem is there are only a handful of 40v tools that allow for the space to use the adapter and two 18v batteries. It's all just a cash grab.
I stumbled across this video out of nowhere and I have been wondering about this recently. I have the 36v inverter but only used it once, and was wondering with the announcement of the newer 18v inverter, if it was worth getting seeing as I have a nealy a dozen 28v batteries
40volt can support 300watts. The 18one can only do 150volts. Unless you're talking about their newly reformed 1800watt generator that uses 8 18volt cells vs 4 40volt cells. I mean sure. The 18volt generator would be a option if you got tons of 18volts laying around. But even with 9ah 18volts of 8cells. You're looking at less then 1300watt hours of usage. Compared to say 4 12ah 40volt cells the 40volt version can handle (If get your hands on those or have their 80volt drive mowers with the 4x 12ah cells.). Which will give you close to 1920watt hours of usage. Or say if you're not into spending a few grand. Say getting 4 of the 3x 40volt backpack cells, Putting 4 of those into the 40volt generator with each backpack holding 12ah 40volt cells. You can get yourself up to 5.760watt hours of usage power on the 1800 40volt version, And also recharge each cell pack on it's own when they run out. (Since the system powers off 1 pack and then moves on i believe.) But ehy. Maybe Ryobi might come out with a 18volt expansion pack for 4 batteries to 1 dummy cell system? That'd make for a nice option for the 18volt 1800 version for sure.
Interesting thought, this video was a particular request to show what is the actual difference , I will have to give some thought on how to compare a series batteries
@@livefreeandtoolon DC run times are much more accurate, there's always some energy wasted with an inverter and the 18v one was pushing its max under your test, which would make it even less efficient and reduce its runtime...
@@ZeoCyberG Thanks for the comment, I get it and good point, the more loads in series in a circuits will affect the outcome, however in the case it was a particular request in which the results was no surprise but the process and comparison was interesting and actual showed a real life use comp
their are inherent losses converting DC to AC.... I wonder how long the 28v batteries directly connected without the inverter would last for (sans the 40v of course).
![Ryobi 18v vs 40v battery [runtimes revealed!]](/img/logo.svg){kind=logo}
