If your DIY requirements do not stretch beyond hanging a few picture
frames, chances are all you'll ever need is a budget priced basic 14Volt
DIYer Drill-Driver, many which require up to 3 hours or more to
recharge the batteries. But if like many who enjoy DIY and are
interested in taking on more ambitious tasks, chances are you'll be in
the market for a more sophisticated Drill-Driver.

The two essentials of selecting a cordless Drill Driver are Torque and
Battery power.
Torque which is the measure of rotational power or force applied by the
power tool to drive or rotate the screw. The greater the torque
available, the easier the screw will turn. A clutch is used by Drill-drivers
to control torque. Ideally, the more torque settings (amount of torque
applied) the better the performance required to sufficiently turn the
screw and to stop turning when the screw head is tight and snug. Ability
to adjust torque is critical, not only to avoid damage to screw head by
applying too much torque but to be efficient when the project involves
working with many screws. Look for models with more torque settings,
so chances are a model boasting 25 settings is probably more versatile
than a model with 16 settings.

For cordless power tools, Lithium-ion (L-ion) battery power tools are
much more efficient battery technology than the traditional
Nickel-cadium (NiCd) or Nickel-metal hydride (NiMH) battery cells. L-ion
batteries deliver not only more current which means more power but
also retain power charge for longer time, which is why all the latest 18v
power tools feature L-ion batteries. Another important feature of L-ion
batteries is that unlike the traditional batteries which suffer 'memory
effect' (when a battery capacity is reduced by repeated top-up
charging) L-ion batteries do not suffer 'memory effect'.

The enormous success of Drill-Drivers is due mainly to its popularity as
a powered screwdriver. Unlike the fast turning electric drill bit, you have
a slow turning screw driver, which can generate more rotational force
(torque). Usually a slide switch can reverse the spin direction which is
required for removing screws.

Latest trends in Drill-Driver product design sees the emergence of a
more sci-fi styling featuring a more compact size and less weight. But
don't be fooled by the outward size and appearance, these tools are
well capable of meeting the demands of serious amateurs as well as
professionals. Product performance typically includes 1200rpm, and 22
clutch setting positions, high and low ratios, LED work light and touch
sensitive triggers allowing fine control and generating a massive 25lb of
torque and more clutch, Battery recharging time has been dramatically
reduced to 30 minutes or less. Market leading models are powered by
18V lithium-ion batteries.

The author is principal of OWEN CHUBB GARDEN LANDSCAPES
LIMITED, an established and award winning garden landscaping
company based in Dublin, Ireland. The company offers clients a
complete landscaping service including Garden Design, Construction &
Planting

For more information about company and award winning landscaping,
please visit:
http://www.owenchubblandscapers.com

For more information about garden design, landscaping, innovative
garden products, visit our gardening blog (SUNBLOG):
http://www.owenchubblandscapers.com/news/

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Two Important Tips For Selecting a Cordless Drill Driver
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