1. By: Fatima Payman

2. Our markets are flooded with new
items and gadgets that use
rechargeable batteries.
From operated toys to electronic
devices, all have rechargeable
batteries.
Gone are the days when we had to
buy new batteries to replace the ones
which died.
Rechargeable batteries will not last
forever but are a BETTER OPTION!

3. W HAT ARE RECHARGEABLE
BATTERIES ?
A rechargeable battery is a type of battery that can
be recharged and used many times.
They are considered to be electrochemical cells
which produce a limited amount of energy.
They are also known as storage batteries, due to
their ability to accumulate and store energy so that
they are available at times of need.
Rechargeable batteries were developed as an
alternative to disposable batteries and also to help
families save money and reduce waste.

4. F UNCTION OF
RECHARGEABLE BATTERIES
 A battery converts chemical energy
into electrical energy and they are
made of chemicals and metals such
as nickel, mercury and lead acid.
 Batteries have two electrodes:
anode – which is the negative plate
cathode – which is the positive plate
 Voltaic cells is the name given to the
battery with two electrodes.
 A voltage differential between the
anode and cathode causes an electric
current to run in between the
battery’s two electrodes.

5. E LECTRICAL ENERGY …
 With the help of reactive chemicals, batteries have
plates which are separated by barriers .
 These barriers are polarized so that all electrons
gather on one side and hence possesses a negative
charge . Resulting the other side to be positively
charged.
 When a device is connected, it creates a current
and the electrons flow through the device to the
positive end (referring to electronic current).
 At the same time, an electrochemical reaction
occurs inside the batteries, causing the electrons
to reload.
 Rechargeable batteries can restore to full charge
as they can efficiently and safely reverse the
chemical changes that occur during the discharge
process.

6. A DVANTAGES …
Cost: Rechargeable batteries are renowned as being able to be
reused more than 500 times, reducing the cost of replacing the
batteries. Despite the high initial cost, using the batteries can
save up to hundreds of dollars a year.
Efficiency: Rechargeable batteries are more efficient than disposable
batteries and can last up to five times longer than disposable
batteries.
Less Environmental Impact: It’s a proven fact that rechargeable batteries
have up to 32 times less of an impact on the environment
compared to disposable batteries. When disposable batteries
are thrown out, they release dangerous, toxic chemicals into
the environment.

7. D ISADVANTAGES …
Charging: Rechargeable batteries can be a hassle to recharge,
especially if the device is useless while their batteries wait to
recharge.
Uses: Certain types of batteries, depending on their composition,
are useful only with certain devices. Older hand-held
devices will react against using nickel-based batteries in
them and recommend alkaline instead. The high number of
different compositions can make it confusing for someone
to decide which battery is best.
Hazards: Some rechargeable batteries, especially the nickel-cadmium
variety, contain chemicals even more dangerous than those
inside alkaline batteries. This makes them a very high
environmental risk and one of the main reasons some
countries place restrictions on the number of nickel-
cadmium batteries that can be used.

8. THANK YOU 