are replacement spare batteries so expensive?
development, material and production costs of
rechargeable batteries are high.
Batteries are very economical
in terms of electricity consumed and this is a
benefit for the user.
Most batteries should last
for at least 1000 charges which represents excellent
value and on average use this is around three
years subject to the right storage conditions.
How long do the batteries last?
are rated in voltage (V) and storage Amp Hours
(Ah). The amount of time that working voltage
is maintained is related to the work that a battery
will complete and this depends on the application.
Under a heavy load the motor will draw more amps,
quickly reducing the batteries capacity versus
a light load. As a guide the number large holes
can be counted in tens while small screws in hundreds.
Batteries are rated in various
Amp Hours. A 2Ah battery will deliver 40% more
run time than 1.25 Ah, although this is reflected
in a higher cost.
Can I get a 110v charger?
majority of cordless chargers require a uniform
current supply in order for the sophisticated
electronics to operate. Under these circumstance
maufacturers tend not to offer 110v chargers,
as they do not work on generators.
Are cordless tools serviceable?
majority of power tools have a brush motor; periodically
the brushes need to be replaced. Cordless tools
are no different although in the majority of circumstances
the brushes in a cordless motor cannot be replaced,
resulting in the replacement of the complete motor.
DeWalt though have developed
a motor which is used in the majority of it's
cordless tools that allows for the brushes to
be replaced incurring little cost.
With regards to batteries and
chargers these are generally non-serviceable due
to the make-up.
Does the battery have to be run
down before recharging?
the battery will benefit from being fully run
down before recharging in order for the cells
to balance themselves out. If one cell still
has some charge left the rest will stop taking
charge when the first cell is full. It is always
advisable to fully run down a new battery before
the first 5-6 re-charges as this helps to increase
What is the difference between
Nickel Cadmium and Nickel Metal Hydride Batteries?
Cadmium batteries have been used in cordless tools
for nearly forty years proving to be very reliable
and effective as a means of cordless energy, due
though to environmental and technical developments
there is a general move towards Nickel Metal Hydride.
Although slightly more expensive Nickel Metal
Hydride offers improved capacity in Amp Hours
(Ah) delivering a longer run time proving more
cost effective. As they become more widely used
their technical development will also improve.
What is the benefit of the buying
a higher voltage?
voltage of a cordless power tool is relational
to the power the tool can deliver; this is also
reflected in the energy the tool will consume.
Battery technology has allowed for the development
of higher voltage tools in relation to their run
A higher voltage tool will
not only deliver more power resulting in a greater
capacity, enabling the job to be done quicker.
The only negative side is an increase in tool
weight due to a larger battery.
How long does it take to recharge
majority of cordless tools are supplied with a
1-hour fast charger and two batteries, this allows
for one battery to be on charge while the other
is being used. In some circumstances a faster
re-charge time may be required dependant on the
application, thus a 15-minute ultra quick charger
is available as an accessory.
Do batteries suffer from memory?
a battery is regularly recharged before it is
fully discharged it can cause an imbalance in
the battery cells, which would result in a lowering
of capacity; this is often referred to as 'memory'.
Some chargers are now designed to help prevent