1. LOCATION

2. PLANT

3. EXIDE INDUSTRY
 Exide Industries
Ltd, the country's
largest lead acid
storage battery
manufacturer and
stored energy
solutions
provider, today
declared its first
quarter results for
the year 2012-13
(April to June).

4. The Battery
 A cell or connected group
of cells that converts
chemical energy into
electrical energy by
reversible chemical
reactions and that may
be recharged by passing
a current through it in the
direction opposite to that
of its discharge -- called
also storage cell.

5. Types of
Batteries
 The primary battery converts chemical energy to
electrical energy directly, using the chemical
materials within the cell to start the action.It is not
rechargable.
Example-Dry Cell
 The secondary battery must first be charged with
electrical energy before it can convert chemical
energy to electrical energy.It is rechargable.
Example-Lead Acid Battery

6. DRY CELL
Uses An electrolytic paste.
The electrolytic paste
reacts with the electrodes
to produce a negative
charge on one electrode
and a positive charge on
the other.
The difference of potential
between the two
electrodes is the output
voltage.

7. Lead Acid Battery





A Hard plastic container.
Positive and negative internal
plates made of lead.
Plate separators made of
porous synthetic material.
Electrolyte, a dilute solution of
sulfuric acid and water, better
known as battery acid.
Lead terminals, the
connection point between the
battery and whatever it
powers.

8. Cells
 Positive electrode
 Negative
electrode
 Electrolyte
 Separator

9. Ohm’s Law
 Series circuits, the total voltage is equal to
the sum of the individual voltages. The
current is constant.
 Parallel circuits, the voltage is constant. The
current is equal to the sum of the individual
currents.

10. Series Connected Batteries
 Positive terminal of one
cell is connected to the
negative terminal of the
next, is called a series
connected battery.
 The voltage of this type
of battery is the sum of a
individual cell voltages.

11. Parallel Connected
Batteries
Connect the negative
terminal from one cell to
the negative of the next
cell
Connect the positive
terminal to the positive
terminal, is parallel
connected.
Voltage remains constant
and the current is
cumulative.

12. Discharging
 Negative plate reaction:
Pb(s) + HSO4(aq) → PbSO4(s) + H+(aq) + 2-e
 Positive plate reaction:
PbO2(s) + HSO4(aq) + 3H+(aq) + 2-e → PbSO4(s) + 2H2O(l)
 The total reaction can be written:
Pb(s) + PbO2(s) + 2H2SO4(aq) → 2PbSO4(s) + 2H2O(l)

13. Charging
Negative plate reaction:
PbSO4(s) + H+(aq) + 2-e → Pb(s) + HSO4(aq)
Positive plate reaction:
PbSO4(s) + 2H2O(l) → PbO2(s) + HSO4(aq) + 3H+(aq) + 2e
The total reaction can be written:
2PbSO4(s) + 2H2O(l) → Pb(s) + PbO2(s) + 2H2SO4(aq)

14. Charging
 Clean Battery Terminals.
 Attach clamps to the battery in proper polarity.
 Keep open flames and sparks away from battery.
 Ventilate the battery well while charging.

15. ANY QUERY

16. THANK
YOU