Many incidences have been reported around the
world in past few years, when a mobile device
turned into a bomb. In some cases result was
turned into loss of life and some cases reported
where the users are seriously injured by the device
explosion. So what makes the laptops, mobile
phones and other mobile devices to catch fire and
explode like a bomb. The main explosive component
found behind the scene is the lithium ion power
pack inside the devices.
Mobile phones, laptops and all other mobile devices
require a power source. The battery pack inside a
device energizes the device to work for long period
without getting recharge early. The dominating
chemistry which is capable to energize the devices
for long time after a full charge is Lithium Ion
chemistry. The common component among all the
devices is the lithium ion energy pack inside them.
These batteries are high energy density batteries
which are capable to store high energy with respect
to their weight. This battery is the key component
which made it possible to go mobile with all devices
we use. In spite having an advantage of high energy
density this batteries sometime turns into a bomb.
These batteries have some limitations of not
tolerating overcharging and overheating.
Overheating makes this batteries unstable causing
them to adopt a chain reaction, termed as thermal
runaway. This thermal runaway causes it to heat up
more and more resulting it to catch fire. Not only it
catches fire but it explodes with great intensity with
device particles scattering around the area of
explosion.
These explosions are intense enough to severely
burn the person near to it and in some cases the
victims lost their lives. Nobody knows what will
happen in next moment with their devices. But
awareness may prevent us from facing such critical
situations. We can’t live without our cell phones,
laptops, tabs etc. These are the part of our life now.
But we can ensure our safety while using these
devices. To work safely with our devices first we
have to understand why this happens and how it
can be avoided. So let us understand what are the
reasons behind these explosions.
Lithium ion batteries are high energy density
packets. These batteries consist of two electrodes
one is made up of carbon and other is made up of
lithium. These two electrodes are separated with a
thin insulation film inside the battery. These
batteries do not tolerate over charging. So to
prevent the battery from over charging these
batteries have a preventive circuit inside them. This
circuit disconnects the input supply after battery get
a full charge or slightly before the full charge state.
But sometimes this preventive circuit does not
work as expected causing the battery to
overcharge. These batteries do not tolerate
overcharging. Overcharging develops excessive
heat inside the battery and trigger a chain reacting
which generate more and more heat. This is termed
as thermal runaway. This thermal runaway is an
uncontrolled reaction which makes the battery to
catch fire and explode.
Similarly a damaged protective circuit short circuit
the battery electrodes internally causing it to
generate heat and same thermal runaway trigger an
uncontrolled chain reaction causing more and more
heat generation. Finally an explosion occurs. There
are very few chances of damaged preventive circuit
due to manufacturing defects. Millions of lithium ion
batteries are manufactured every year.
Manufacturers around the world many times
recalled their laptops, phones, tabs etc after getting
few over heating feedbacks.
Most of the time consumers are responsible for
such accidents. People buy cheap unauthorized
batteries and chargers from the market for their
devices. Manufacturer provides specifications for
chargers for device batteries but most of the people
never pay attention towards charger specifications.
They practice battery charging with unauthorized
chargers with some cheap charger extensions
available in the market. This affects the battery
protective circuit and sometimes damages the
circuit. Battery with a damaged protective circuit
performs normally but overcharging happens every
time and results it to catch fire.
So always buy and use specific batteries and
chargers from manufacturer authorized suppliers.
Lithium ion batteries sometimes exposed to heat,
like placed on hot dashboard of car, near cooking
stoves, in intense sunlight, near vehicle radiator
while checking vehicle. Such surrounding hot
conditions damage the insulating film between the
electrodes and causes short-circuit of electrode
inside.
while using a device if you feel your battery is
overheating then it should be taken to the service
center for testing, and if found any defect in it,
immediately change the battery pack and make test
for charger as well.
Below are some precautions which should be taken
with the devices having a lithium ion battery pack.
WHY MOBILE DEVICES CATCH FIRE AND EXPLODE
August 24, 2015
SOLAR BATTERY – LITHIUM ION BATTERIES FOR
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SOLAR BATTERY – TYPES OF BATTERIES FOR
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SOLAR BATTERY – LITHIUM ION BATTERIES FOR
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August 12, 2015
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  ELECTRICAL  WHY MOBILE DEVICES
CATCH FIRE AND EXPLODE
Never short circuit the device battery
terminals with coin or any other metal part.
Never press, deform, drop or make battery
to undergo impact loading. If it is
accidentally dropped then take it to the
service center for testing and
replacement.
Do not charge lithium ion battery directly
from a DC source. Always use the specific
charger for the battery.
Do not overcharge the device battery.
Switch of the charger as soon as possible
after getting full charge. If battery is
overcharging and generating heat while
charging then replace the battery and
charger.
Never put your devices in extreme hot
surrounding temperatures.
Never spill any liquid on your device
battery.
Use manufacturers authorized batteries
and chargers for your devices. Newer buy
cheap alternatives.
Never try to fit other model batteries into
the devices. This may change the polarity
of battery and may cause a big accident.
Never play with your device batteries and
never give your devices and batteries to
children.
Never cut or try to open a lithium ion
battery.

Yu expect me to read this Ababio abi. Smh

joy