Hey Dan! I like the feel of the Dewalt and its definitely a more solid design like a gas saw. I’m hopi g to get some action with them this weekend. Thanks for watching and commenting.
You will often be wrong about the voltage/amps and run time. The 40v saw can do the same work as the 20v while using half the amperage so the 40v could last longer even with 2 ah versus 2.5 ah. If you noticed the battery is twice the size because it has more cells to obtain the higher voltage and more cells means more energy. To put it in a more simple way, is that total work is determined by watts hours available. amp hours is only half the equation, as is voltage. Total energy (and work that can be performed) is measured by watt hours, not voltage or amp hours alone. 40v x 2ah = 80 watt hours where the 20v x 2.5 ah = only 50 watt hours. Of course there are variances on motor efficiency and other factors, but when all is the same, a higher voltage battery will last longer with the same amp rating. The 40v can have the same cells as the 20v with the same ah rating, but because there are 2x as many cells to get the higher voltage, how are you going to think it will not do more work or last longer? Do you think that those extra cells and all that extra storage of energy means nothing? LOL. That is what doing more work means.
The people watching these videos don’t care about any of that, or your need to demonstrate your knowledge of electrical power. Also, the unit Watt is time based, so to say “watts hours” isn’t really a thing.
The 40v battery has twice as many cells as the 20V. $56 for a replacement battery isn't a bad price. The knob should lock the bar in place after you have tensioned the chain. I've been looking at the Wen 16" 40v chain saw that comes with 4 AH battery.
Hey Bubba, hows it going. I got the pole saw bare tool this week and ordered a 4AH battery with it, so now I have a 4 AH and a 2 AH battery in the green stuff. I have my eye on the little tiller for my raised beds. I bet that tiller will suck a battery dry in nothing flat. lol I saw the Wens, they are more along the lines of the Dewalt 60V's and the Makitas. I was looking at the Harbor Freight LYNXX line too. Thanks for watching and commenting.
@@JeromeBeeFarm I'm looking forward to seeing some saw dust fly and see how you like them. I'd like to see the tiller in action. Raised beds should be a good task for it. The soil shouldn't be too compacted. Does it have a brushed or brushless motor?
That's a good question. I don't know what type of motor the greenworks uses. I bet it's brushed, because they cost less than dewalt. I'm pretty sure the dewalt uses brushless.
@@JeromeBeeFarm You have to be careful with dewalt because they use both motors in the same equipment but those fitted with the brushless motor cost a little more, I think the XR designates brushless motors.
I did a little reading and the greenworks does have some brushless motors in their line ups, but they aren't consistent in telling if it does or doesn't, so it's hard to tell.
Ahh I see I missed a video lol. How does the quality feel compared to the Dewalt? Just by looking at them, the Greenworks looks like it is made better. Also, have you thought about the Ryobi. If so what are your thoughts? Man I wish I had one of these this weekend. I was using my 20 in 49 cc echo saw. It is so heavy.
Hey Ronnie, I think the Dewalt is built better, but it’s 20v vs 40v. I shot video this weekend of them in action. You may be surprised. I was. Thanks for watching and commenting.
Basic physics - look at Watt hours, not Amp hours. To do the same work, a 40v motor only needs to draw half the current of a 20v motor, so although the Dewalt does work out a little bigger, it's not by much (25%) and as any resistance in wiring and switch gear is going to have far more effect on a higher current load, that could well be eaten up by efficiency losses. I don't know how they get to either 20 or 40v on Li-Ion batteries though, the cells of which are 4.2v fully charged and must never be allowed to drop to 2.5v. Nominal voltage is reckoned as 3.7v, so neither 20 or 40v divide into a whole number of cells.
Not all motors are created equal. Amp Hours is the common denominator of both batteries when comparing apples to apples, and Watts has a time factor within the unit.
@@JeromeBeeFarm Indeed, but you aren't comparing apples to apples if one has twice he voltage of the other. A motor designed to run at half the voltage needs double the current to achieve the same power INPUT, but as that higher current carriees the penalty of needing thicker wires to carry it or losing more power due to heat generated in those wires by the high current, is almost always less efficient. This is why we always rate the power of electrical appliances in Watts, not Volts or Amps, and why we don't use 12v power for household appliances. Amp Hours also has a time constraint - it just happens to be resolved to 1/3600th the precision of that used in Watts. To know for sure, you'd need to compare using new batteries on both, as capacity and efficience are lost over time and cycles of use.
@@JeromeBeeFarm Wrong, total work performed is measured by WATT HOURS. AMP HOURS AND VOLTAGE ARE ONLY EACH 1 PART OF THE EQUATION. BY YOUR LOGIC AMP HOURS IS ALSO A TIME FACTOR.
@@JeromeBeeFarm DON'T YOU KNOW THAT WHEN YOU DOUBLE THE VOLTAGE, YOUR AMPERAGE IS CUT IN HALF. DO YOU UNDERSTAND HOW OUR POWER SYSTEM WORKS. IF THE AMPERAGE DRAW IS HALF, THEN THE SAME AH BATTERY LASTS 2X AS LONG WHEN IT IS AT 2X THE VOLTAGE DOING THE SAME WORK. (ASSUMING ALL ELSE IS EQUAL IE MOTOR EFFICIENCY ETC.) ACTUALLY HIGHER VOLTAGE MOTORS ARE USUALLY MORE EFFICIENT BECAUSE THE INITIAL LOSSES FOR OPERATION ARE A LOWER PERCENTAGE OF OPERATING VOLTAGE.
Either! I like cords! cause there more lighter, cheaper and got more power. BUT THAT ME! if i choose! idk i dislike like battery packs. i guess would be Dewalt> but Dewalt is way over rated> That Greenworks does look top heavy. That battery should just slip in. OH WELL.! he hee sticking with my cords. DAM 1 for each hand now! Get a pole saw> GET THE CORD REMINGTON POLE SAW much cheaper> I LIKE EM> I GOT ONE can take it off and on the pole, like for sawing logs and things. > I sure would hate a battery pack tree trimmer that be really heavy> with a 10' pole. RAIN COMING CHEERS
NOPE he hee i been there done all of that crap > I love my light weight CORD saws and things> i get things done FAST? Like i said > I WILL NEVER OWN ANOTHER BATTER PACK NOR ENGINE POWER TOOL EVER AGAIN! > DONE WITH EM!
Good review Darren, I personally like the DeWalt better, the blade stop is a good thing to have in my opinion!! Good share sir!! Dan
Hey Dan! I like the feel of the Dewalt and its definitely a more solid design like a gas saw. I’m hopi g to get some action with them this weekend. Thanks for watching and commenting.
a 2A 40v has the same power as a 4A 20v. Now the devices may not be as efficent and the battery capacity may be a lie,.
@@MichaelMantion Thank you. At least someone understands basic electricity properties. This youtuber needs some classes before giving others advice.
Awesome review buddy. Looking forward to seeing them compared side by side cutting. Have a great weekend!
Thanks MR. CB. Got a break in the heat this weekend, but supposed to be raining. lol Can't win for losing. Thanks for watching and commenting.
Did I miss the actual test of the saws cutting ?
th-cam.com/video/tx4RaZhYbgA/w-d-xo.html
You will often be wrong about the voltage/amps and run time. The 40v saw can do the same work as the 20v while using half the amperage so the 40v could last longer even with 2 ah versus 2.5 ah. If you noticed the battery is twice the size because it has more cells to obtain the higher voltage and more cells means more energy. To put it in a more simple way, is that total work is determined by watts hours available. amp hours is only half the equation, as is voltage. Total energy (and work that can be performed) is measured by watt hours, not voltage or amp hours alone. 40v x 2ah = 80 watt hours where the 20v x 2.5 ah = only 50 watt hours. Of course there are variances on motor efficiency and other factors, but when all is the same, a higher voltage battery will last longer with the same amp rating. The 40v can have the same cells as the 20v with the same ah rating, but because there are 2x as many cells to get the higher voltage, how are you going to think it will not do more work or last longer? Do you think that those extra cells and all that extra storage of energy means nothing? LOL. That is what doing more work means.
The people watching these videos don’t care about any of that, or your need to demonstrate your knowledge of electrical power. Also, the unit Watt is time based, so to say “watts hours” isn’t really a thing.
The 40v battery has twice as many cells as the 20V. $56 for a replacement battery isn't a bad price. The knob should lock the bar in place after you have tensioned the chain. I've been looking at the Wen 16" 40v chain saw that comes with 4 AH battery.
Hey Bubba, hows it going. I got the pole saw bare tool this week and ordered a 4AH battery with it, so now I have a 4 AH and a 2 AH battery in the green stuff. I have my eye on the little tiller for my raised beds. I bet that tiller will suck a battery dry in nothing flat. lol I saw the Wens, they are more along the lines of the Dewalt 60V's and the Makitas. I was looking at the Harbor Freight LYNXX line too. Thanks for watching and commenting.
@@JeromeBeeFarm I'm looking forward to seeing some saw dust fly and see how you like them. I'd like to see the tiller in action. Raised beds should be a good task for it. The soil shouldn't be too compacted. Does it have a brushed or brushless motor?
That's a good question. I don't know what type of motor the greenworks uses. I bet it's brushed, because they cost less than dewalt. I'm pretty sure the dewalt uses brushless.
@@JeromeBeeFarm You have to be careful with dewalt because they use both motors in the same equipment but those fitted with the brushless motor cost a little more, I think the XR designates brushless motors.
I did a little reading and the greenworks does have some brushless motors in their line ups, but they aren't consistent in telling if it does or doesn't, so it's hard to tell.
Ahh I see I missed a video lol. How does the quality feel compared to the Dewalt? Just by looking at them, the Greenworks looks like it is made better. Also, have you thought about the Ryobi. If so what are your thoughts?
Man I wish I had one of these this weekend. I was using my 20 in 49 cc echo saw. It is so heavy.
Hey Ronnie, I think the Dewalt is built better, but it’s 20v vs 40v. I shot video this weekend of them in action. You may be surprised. I was. Thanks for watching and commenting.
@@JeromeBeeFarm Can't wait to see it Jerome. I am like you, I want something that has other tools with it as well.
Yeah. I haven’t tried the pole saw yet. Maybe this weekend. We finally got some cooler weather this week.
@@JeromeBeeFarm Good deal. Thanks buddy! Have a great weekend.
Basic physics - look at Watt hours, not Amp hours.
To do the same work, a 40v motor only needs to draw half the current of a 20v motor, so although the Dewalt does work out a little bigger, it's not by much (25%) and as any resistance in wiring and switch gear is going to have far more effect on a higher current load, that could well be eaten up by efficiency losses.
I don't know how they get to either 20 or 40v on Li-Ion batteries though, the cells of which are 4.2v fully charged and must never be allowed to drop to 2.5v. Nominal voltage is reckoned as 3.7v, so neither 20 or 40v divide into a whole number of cells.
Not all motors are created equal. Amp Hours is the common denominator of both batteries when comparing apples to apples, and Watts has a time factor within the unit.
@@JeromeBeeFarm Indeed, but you aren't comparing apples to apples if one has twice he voltage of the other.
A motor designed to run at half the voltage needs double the current to achieve the same power INPUT, but as that higher current carriees the penalty of needing thicker wires to carry it or losing more power due to heat generated in those wires by the high current, is almost always less efficient.
This is why we always rate the power of electrical appliances in Watts, not Volts or Amps, and why we don't use 12v power for household appliances. Amp Hours also has a time constraint - it just happens to be resolved to 1/3600th the precision of that used in Watts.
To know for sure, you'd need to compare using new batteries on both, as capacity and efficience are lost over time and cycles of use.
So buy me a new Dewalt battery and we'll be all set. I'm going to cut up some trees and do a subjective test and you can decide which saw you like. 😀
@@JeromeBeeFarm Wrong, total work performed is measured by WATT HOURS. AMP HOURS AND VOLTAGE ARE ONLY EACH 1 PART OF THE EQUATION. BY YOUR LOGIC AMP HOURS IS ALSO A TIME FACTOR.
@@JeromeBeeFarm DON'T YOU KNOW THAT WHEN YOU DOUBLE THE VOLTAGE, YOUR AMPERAGE IS CUT IN HALF. DO YOU UNDERSTAND HOW OUR POWER SYSTEM WORKS. IF THE AMPERAGE DRAW IS HALF, THEN THE SAME AH BATTERY LASTS 2X AS LONG WHEN IT IS AT 2X THE VOLTAGE DOING THE SAME WORK. (ASSUMING ALL ELSE IS EQUAL IE MOTOR EFFICIENCY ETC.) ACTUALLY HIGHER VOLTAGE MOTORS ARE USUALLY MORE EFFICIENT BECAUSE THE INITIAL LOSSES FOR OPERATION ARE A LOWER PERCENTAGE OF OPERATING VOLTAGE.
Either! I like cords! cause there more lighter, cheaper and got more power. BUT THAT ME! if i choose! idk i dislike like battery packs. i guess would be Dewalt> but Dewalt is way over rated> That Greenworks does look top heavy. That battery should just slip in. OH WELL.! he hee sticking with my cords. DAM 1 for each hand now! Get a pole saw> GET THE CORD REMINGTON POLE SAW much cheaper> I LIKE EM> I GOT ONE can take it off and on the pole, like for sawing logs and things. > I sure would hate a battery pack tree trimmer that be really heavy> with a 10' pole. RAIN COMING CHEERS
Cut the cord super bee. lol
NOPE he hee i been there done all of that crap > I love my light weight CORD saws and things> i get things done FAST? Like i said > I WILL NEVER OWN ANOTHER BATTER PACK NOR ENGINE POWER TOOL EVER AGAIN! > DONE WITH EM!