[Dewalt Chainsaw - 40V vs. 60V]

On 6/11/2019 at 10:10 PM, DewaltLandlord said:

Not to be pedantic, but all things being equal voltage does correlate to power.

 

P = IV = I^2*R = V^2/R

 

Where:

P=Power

I= Current

V= Voltage

R= Resistance

 

Assuming the resistance stays about the same between the 40V and 60V units, 

 

P(60)=(60^2)/R

P(40)=(40^2)/R

 

P(60)/P(40)= [(60^2)/R]/[(40^2)/R]=3,600/1,600=

or 2.25x's as much power in a 60V vs a 40V, assuming all else is equal.

 

(someone correct me if the rust on my old engineering degree has screwed something up.  But I think this is correct)

 

Now if we want to identify work done, it would be:

 

W= P*t

 

W=Work 

P= Power

t=time

 

 

Personally I like the backwards compatibility of the flexvolt and plan on sticking with either 20v or 60V tools.

 

 

 

Agreed.  Power is compatible.  But, I think the real issue is Amp Hours.  And the 40V systems seems to crush it there.  Too bad it was put to rest.