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Sometimes instead of being
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plugged into a power
outlet all the time,
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we want to take our
technology with us.
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Mobile technology uses
rechargeable batteries to
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carry power with the device
wherever we take it.
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Rechargeable devices might have
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an external charger for
removable batteries,
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or might have a cradle
stand or wireless charger.
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Look at this phone, we can
top up the battery just by
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laying it on this wireless
inductive charging pad.
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Isn't that cool? It's also
pretty clever technology.
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Rechargeable batteries
have a limited lifespan,
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which is measured
in charge cycles.
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A charge cycle is
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one full charge and
discharge of a battery.
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When a battery is reaching
the end of its lifespan,
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it may take longer to charge and
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might not hold as much
charge as when it was new.
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For some devices, you compare
the current cycle count of
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your battery with the rate at
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cycle count of
that battery type,
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to see how much more life
to expect out of it.
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You need an external
power source
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to add power to a battery.
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This could come
from a wall outlet,
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another battery, or
even a solar panel.
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You also need a charging
circuit that manages
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the power transfer from
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the external power source to
the rechargeable battery.
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This circuit works a lot like
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a power supply unit or PSU
that we looked at earlier.
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It makes sure the input power is
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converted to the
correct output power.
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Instead of using a large PSU,
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rechargeable devices use more
portable power adapters,
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power supplies or chargers.
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A portable power supply powers
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the device while also
charging the battery.
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This might sound obvious,
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but you need to make
sure that you use
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the right charger for
the right device.
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Mismatching chargers to devices
can damage the battery,
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the device and the charger.
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A lot of chargers and power
supplies use USB connectors,
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but you'll see a wide variety
of charging connectors.
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Rechargeable batteries
can be damaged by
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very cold or very
hot environments.
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Don't charge or discharge
rechargeable batteries unless
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they're within their safe
operating temperature range.
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Its not just that a damaged
rechargeable battery
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might not perform well,
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it can also be very dangerous.
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Batteries can swell, rupture,
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and sometimes even catch fire.
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Before working with
a damaged battery,
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you should know how
to safely handle it.
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When a battery reaches
the end of its life,
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you'll need to replace it.
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Some devices will slow
themselves down when
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a battery is getting old to
make the battery last longer.
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If your device is
running much slower than
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usual or shutting
down unexpectedly,
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one thing to check
is the battery life.
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Some devices have
batteries that are
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designed to be replaced
by the end-user.
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Other devices have batteries
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that are very
difficult to replace,
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like small laptops
and mobile devices.
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As an IT support specialist,
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you might receive special
training on how to
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replace batteries and
devices that you support.
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Or you might be the person
sending the device out for
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battery replacement and then
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returning the device
to the end-user.
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IT support specialist
often have to
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troubleshoot battery life
and device charging.
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The first step is to
make sure the charger,
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the battery and the device are
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all designed to work
with each other.
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We'll talk about sending
out devices for repair and
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troubleshooting skills in
future videos, so stay tuned.
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For iOS and Android,
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there are also some things
that you could do to make
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the battery last as
long as possible.
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It's a good idea for you to be
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familiar with these things
so that you can help
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educate end-users
on the best ways
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to get the most out of
their mobile devices.
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