I have two Porter Cable electric drills. One uses a 14 volt rechargeable
battery and the other a 12 volt. The 12 volt battery appears to work on the
14 volt drill quite well. The question is - if I were to use it in place
the 14 would it damage the battery? The 14 is about shot.

--
******************************
Dave

"Dave" wrote in message
...
I have two Porter Cable electric drills. One uses a 14 volt rechargeable
battery and the other a 12 volt. The 12 volt battery appears to work on
the 14 volt drill quite well. The question is - if I were to use it in
place the 14 would it damage the battery? The 14 is about shot.

Should be fine ... you already tried it. There will be a bit less torque
and power.

Charles Schuler wrote:
"Dave" wrote in message
...
I have two Porter Cable electric drills. One uses a 14 volt rechargeable
battery and the other a 12 volt. The 12 volt battery appears to work on
the 14 volt drill quite well. The question is - if I were to use it in
place the 14 would it damage the battery? The 14 is about shot.

Should be fine ... you already tried it. There will be a bit less torque
and power.




And more current. Thus more heat, both for the battery and the drill
motor. Might shorten life of both.

Bah humbug. Just use a corded drill.

On 20 Feb 2007 07:24:08 -0800, wrote:

Bah humbug. Just use a corded drill.

That sounds like kind of a jerky answer, but it is a good point.
Cordless drills are great tools, but they are not always needed. I use
mine when I am working outdoors or out in my work shed or garage. I
even use it in my house, if I am in a place when I can't easily drag
an extension cord.

However, my corded drills have more gitty-up for things like drilling
into masonry and work just fine on anything else that is close to an
outlet.

All that being said... I still like having the cordless drill around
for those times when it makes my task less grueling.

H

wrote:
On Mon, 19 Feb 2007 16:53:50 -0800, CptDondo
wrote:

Charles Schuler wrote:
"Dave" wrote in message
...
I have two Porter Cable electric drills. One uses a 14 volt
rechargeable battery and the other a 12 volt. The 12 volt battery
appears to work on the 14 volt drill quite well. The question is
- if I were to use it in place the 14 would it damage the
battery? The 14 is about shot.

Should be fine ... you already tried it. There will be a bit less
torque and power.




And more current. Thus more heat, both for the battery and the drill
motor. Might shorten life of both.

When will this insanity stop? In a DC motor less voltage means less
current, not more. ... by the square of the difference.

Thanks; some of the lunacy I see here today is disturbing.

Pop`

On Tue, 20 Feb 2007 10:55:06 -0500, Hep wrote:


All that being said... I still like having the cordless drill around
for those times when it makes my task less grueling.

I've really only used mine for screwing in gutter screws. I could
have done it with a corded drill, but the cordless drill was lighter
and easier to handle up and down the ladder.

It was great for gutter screws.

H

writes:

Should be fine ... you already tried it. There will be a bit less torque
and power.

And more current. Thus more heat, both for the battery and the drill
motor. Might shorten life of both.

When will this insanity stop? In a DC motor less voltage means less
current, not more. ... by the square of the difference.

In a permanent magnet DC motor, less voltage means lower speed. The
current is determined by torque, not voltage. If you're driving
something that takes more torque at higher speed, then reducing speed
also reduces torque and current. But with a constant-torque load, the
current will be about the same at any speed.

Dave

wrote in message
...
On Mon, 19 Feb 2007 16:53:50 -0800, CptDondo
wrote:

Charles Schuler wrote:
"Dave" wrote in message
...
I have two Porter Cable electric drills. One uses a 14 volt
rechargeable
battery and the other a 12 volt. The 12 volt battery appears to work
on
the 14 volt drill quite well. The question is - if I were to use it
in
place the 14 would it damage the battery? The 14 is about shot.

Should be fine ... you already tried it. There will be a bit less
torque
and power.




And more current. Thus more heat, both for the battery and the drill
motor. Might shorten life of both.

When will this insanity stop? In a DC motor less voltage means less
current, not more. ... by the square of the difference.



Ahh, but the RDTCGC (reactive drillbit torque conversion gear clutch) will
wear faster due to the variance in voltage!
;-)

Shoot! I've got to go now, I mistakenly put a 6V bulb in my 2-D cell battery
flashlight then left it on and it's melting all over the table now........