| Frequently Asked
Questions |
| Question: How do I know
which cordless drill is right for me? |
| Answer: It all depends
on what you
plan on using the cordless drill for. Start by asking yourself some
questions: Is it for home use or industrial application? Is it going to
be used every day or just once in a while. Will I be using it for
drilling through metal and concrete or wood and plastic? By asking
yourself these questions and having these answers before you, it will
help you narrow down the choices quite a bit. Do some research also.
Read our customer reviews and tech specs to see what cordless drills
will get the jobs that you have now and in the future done. Ask
experienced tradesman what they prefer to use. Someone who is going to
use a cordless drill around the house once and a while to build a few
things or make a few home repairs isn't going to have the same needs as
a tradesman who hangs drywall every day for a living. Typically, like
most everything else, you get what you pay for. I would rather spend
the money once up front and have a quality cordless drill for years to
come than buy one that will only last a short while. My own personal
preference is to stick with the 18 volt cordless drills or better. |
| |
| Question:
Is something wrong when a brand new cordless drill battery doesn't last
very long? |
| Answer: Most cordless tools on the market today have
NiCd (Nickel Cadmium) batteries. NiCd batteries need to be "cycled"
before they can deliver their best performance. This means that the
battery has to be fully charged and fully 'drained' several times
(typically 4 to 5 times) before it reaches its maximum charge capacity.
This process is inherent to all NiCd batteries regardless of the brand.
Once you have cycled your battery, you should obtain the battery
capacity expected. |
|
| Question:
Do I have to deplete the battery charge totally on my cordless drill
once the battery has been cycled several times to
get the maximum charge back on my battery when I am recharging? |
| Answer:
I went to a Dewalt demonstration and asked the factory representative
this very question. He told me that it is not necessary to deplete the
charge totally before recharging your cordless drilll battery. He said
to charge your battery after each use and leave it in the charger until
you are going to use it again. The factory representative told me that
a cordless drill
battery will lose 25% of its charge in the first hour when left off the
charger. |
|
| Question:
What are some of the difference betwen Lithium-ion cordless drill
batteries and Ni-cadcordless drill batteries? |
| Answer:
The most significant is a reduction in weight. A tool utilizing
lithium-ion batteries will typically weigh 25 percent less than the
same tool using NiCad or NiMH batteries. Another advance of lithium-ion
is more capacity which delivers more run time per charge. The highest
capacity lithium-ion battery currently is 3.0 Ah. This represents a 25
percent increase versus the highest capacity NiCad available at 2.4 Ah.
However, NiMH batteries offer a 3.5Ah capacity which means lithium-ion
batteries will not necessarily deliver more run time than the highest
capacity NiMH battery. Lithium-ion batteries have a more stable power
delivery curve over the life of the charge than current battery
chemistries, too. This means the power delivery will not deteriorate as
the battery runs down, which is what typically happens with other
batteries. And, Li-ion batteries will deliver more total performance
over the life of the battery pack than current batteries.
Nickel-cadmium batteries develop a "memory effect" or internal short
circuits due to dendrite growth, severely limiting the life of the
battery. |
|
| Question:
What is a cordless hammer drill? |
| Answer: The cordless hammer drill is similar to a
rotary cordless drill, with the exception that it is provided with a
hammer action for drilling masonry. The hammer action may be engaged or
disengaged as required. |
|
| Question:
What is a variable speed cordless drill? |
| Answer: A variable speed cordless drill rotates at
different speeds allow the user to use it in more applications. Many
cordless drills will have a selector switch which will allow you to
switch from low, medium, or high speed. Drilling different metals
requires a variable speed drill. Drilling stainless steel requires a
different speed and drill bit than say drilling into a softer metal
like aluminum. |