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Old 07-19-2012, 03:38 PM   #1
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Dewalt 12v vs 20v max


I am going to purchase a new drill and impact combo and am torn between the 12 and 20 volt. I will be mainly using it for wood working making tables, chairs of the sort and basic home use. Also I will be installing a fence next month and didnt know if the 12v would hold up for-that task? Will the 20v last longer between charges or will the 12 because it will use less juice? From looking at videos online the 12 looks like it could outdo my old crafaman 18v and looks very powerfull. My main preferences would be 1. Weight 2. Performance 3. Time between charges. Was also looking at the 18v porter cable lithium but dont really like the cheap fell of them.. Any help would be appreciated.

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Old 07-19-2012, 04:32 PM   #2
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Dewalt 12v vs 20v max


#1 I personaly would never buy another Dewault tool of any type. To many years of having to replace brushes, triggers and the batterys almost never lasted past a year.

#2 I would never agin buy any 12 volt tools.

All my 18 volt tools have lasted for years and have more then enough power even driving deck screws.

Before buying any tool I'd suggest going on Amazon.com bring up the tool and look at the bottom at the reviews. Write down the price then go on CPO tools website.
They always have good deals on tools.

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Old 07-19-2012, 04:49 PM   #3
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Dewalt 12v vs 20v max


Quote:
Originally Posted by joecaption
#1 I personaly would never buy another Dewault tool of any type. To many years of having to replace brushes, triggers and the batterys almost never lasted past a year.

#2 I would never agin buy any 12 volt tools.

All my 18 volt tools have lasted for years and have more then enough power even driving deck screws.

Before buying any tool I'd suggest going on Amazon.com bring up the tool and look at the bottom at the reviews. Write down the price then go on CPO tools website.
They always have good deals on tools.
1. What brand do you like best?

2.Why no 12v? U have bever owned any 12v bu fir what i will be primarly using them for it seems they woukd work good but that is why i am asking is i have never owned any.

3. The kit i am looking at dck211s2 has 112 reviews 90 being 5 star. I have read that dewalt is not the dewalt of pld but every place i lool at reviews at lowes,hd, amazon they all have great reviews of the 12 and 20v max drills.
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Old 07-19-2012, 05:26 PM   #4
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Dewalt 12v vs 20v max


Quote:
Originally Posted by kyle11 View Post
3. Time between charges
= energy drain = drill power delivered to the workpiece
vs.
stored energy.

For the same energy output, a 20v 2 Ah battery stores 40 watt-hours and delivers slightly less, and a 12v 2 Ah gives 24 watt-hours and delivers slightly less.

How many dollars per watt-hour do you pay for each battery?

Power is proportional to voltage squared, so 20 volts squared = 2.8x the power of 12 volts squared, in principle.

Last edited by Yoyizit; 07-19-2012 at 05:28 PM.
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Old 07-19-2012, 05:44 PM   #5
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Dewalt 12v vs 20v max


Quote:
Originally Posted by kyle11

1. What brand do you like best?

2.Why no 12v? U have bever owned any 12v bu fir what i will be primarly using them for it seems they woukd work good but that is why i am asking is i have never owned any.

3. The kit i am looking at dck211s2 has 112 reviews 90 being 5 star. I have read that dewalt is not the dewalt of pld but every place i lool at reviews at lowes,hd, amazon they all have great reviews of the 12 and 20v max drills.
2 Why no 12v? I have bever owned any 12v but for what i will be primarly using them for it seems they woukd work good but that is why i am asking is i have never owned any.
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Old 07-19-2012, 05:47 PM   #6
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Dewalt 12v vs 20v max


Quote:
Originally Posted by Yoyizit
= energy drain = drill power delivered to the workpiece
vs.
stored energy.

For the same energy output, a 20v 2 Ah battery stores 40 watt-hours and delivers slightly less, and a 12v 2 Ah gives 24 watt-hours and delivers slightly less.

How many dollars per watt-hour do you pay for each battery?

Power is proportional to voltage squared, so 20 volts squared = 2.8x the power of 12 volts squared, in principle.
Our rates are cheap. Like .12 kwh. I just watched a dewalt review where they claimed the 12v could drive 200 2" screws on one battery. If it has that kind of battery that would work well for what i want to use it for.
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Old 07-19-2012, 11:05 PM   #7
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Dewalt 12v vs 20v max


Quote:
Originally Posted by kyle11 View Post
..... My main preferences would be
1. Weight 2. Performance 3. Time between charges...........
I Have the original 18V NiCad DeWalts that I upgraded with 18V Li-Ion batteries
after wearing out three sets of Ni-Cad batteries.

..... For your requirements I would not be afraid to go with the 12V Kit.
The batteries have a hr to 1 hr charge time
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Old 07-20-2012, 07:29 AM   #8
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Dewalt 12v vs 20v max


Quote:
Originally Posted by PaliBob
I Have the original 18V NiCad DeWalts that I upgraded with 18V Li-Ion batteries
after wearing out three sets of Ni-Cad batteries.

..... For your requirements I would not be afraid to go with the 12V Kit.
The batteries have a hr to 1 hr charge time
Have you used the 12v? How do they compare in Power? We are in the process of of having a pool installed. When it is done I will be building a pergola or gazebo with 6x6 or 4x6 and 2x12s. Will the 12v handle the 3 and 4" screws that will require while still giving me the fanes i need for making outdoor furniture? Or will the 20v be better and still give the the fanes i am looking for
Furniture making.
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Old 07-20-2012, 11:10 AM   #9
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Dewalt 12v vs 20v max


Quote:
Originally Posted by kyle11 View Post
the 12v could drive 200 2" screws on one battery.
How many amp-hours for this 12v battery?

If 24 w-h can drive this many screws
then
40 w-h could drive 330 screws into the same type of wood and as fast and should cost 1.6x what the 12v costs, if you are paying solely for endurance/energy.

Drill motor makers make whatever power & energy & weight & reliability & ruggedness tradeoffs that they think will sell. Matching these five qualities to your present and future needs can be tricky.

Last edited by Yoyizit; 07-20-2012 at 11:13 AM.
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Old 07-20-2012, 11:48 AM   #10
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Dewalt 12v vs 20v max


I've had good service with my Makita 18 volt LIon XLT series drill and driver combo. Light weight, 30 minute charges, ample power and run time.

Feel (weight and balance) of the tool is most important.
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Old 07-20-2012, 01:57 PM   #11
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Dewalt 12v vs 20v max


Well i went with the 20v over the 12 because in the end i can get lower torque if needed with the 20 but cant get more torque with the 12 if i needed it. Got the free battery but they were out of the 1.5s so they gave me a 3.0 instead plus used a 10% off lowes coupon. Thanks for all your help!
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Old 07-20-2012, 02:33 PM   #12
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Dewalt 12v vs 20v max


You know these "jiffy" places that just do brakes/mufflers, etc.?
Well, every single day they throw out slightly used disks and pads that, along with almost any hardware spring and C clamp, could be used to make a Prony Brake.

With this gadget you could make some serious power and energy comparisons between drill motors, battery types and drill makers.
Just don't run the motor for longer than you'd normally do with DIY jobs. Let it cool down.

Last edited by Yoyizit; 07-20-2012 at 02:48 PM.
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Old 07-20-2012, 03:35 PM   #13
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Dewalt 12v vs 20v max


We use Ryobi 18V stuff at work, it seems to work fine. I use Craftsman 19.2V stuff at home, it seems to work okay, but they discontinued their 7" circular saw apparently, my guess is that it just wasn't powerful enough. Dad uses the 19.2V string trimmer, and I get a lot of use from the sawzall.
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Old 07-20-2012, 08:40 PM   #14
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Dewalt 12v vs 20v max


Quote:
Originally Posted by kyle11 View Post
Have you used the 12v?.......
No I have not used the 12V DeWalt. The main reason I recommended it
was because you listed weightas your primary requirement.
If that has changed and your primary requirement is
construction with 6x6 & 2x12s then go with 18V.

If you do not like DeWalt then Makita makes three models of 18V drills.
One is the compact Makita 18V Driver-Drill with two 15 minute charge time batteries.

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