Table of Content
 

 

Batteries, Cell and Voltage measurement

  • Power Sources
  • Primary Batteries
  • Secondary Batteries
  • Dry and Wet cells
  • Primary and Secondary cells
  • Dry cell and batteries
  • Weak dead cell
  • Measuring cell Voltage 
  • Multimeter
  • Multimeter as Dc Voltmeter
  • Multimeter as Ac Voltmeter
  • Multimeter as Ac Ammeter
  • Multimeter as ohmmeter
  • Resistance zero setting 

Battery Chargers

  • Constructions
  • Working 
  • Circuit-1
  • Circuit-2
  • Circuir-3

Secondary Cell (Lead-acid)

  • Secondary Cell
  • Electrolyte
  • Electrodes
  • Polarity of Electrodes
  • Electrolysis
  • Container
  • Plates
  • Plante Plates
  • Faure Plate
  • Separators
  • Electrolyte
  • Working Principle
  • Relation between the voltage and the specific gravity
  • No of plates
  • Defects
  • Hard Sulphation
  • Buckling 
  • Partial Short
  • Effect pf temperature on batteries

Secondary Cell (Nickel-Iron)

  • Parts
  • Chemical Changes
  • Characteristics
  • Efficiency
  • Specification of batteries
  • Comparison Lead Acid Cell and Nickel –Iron or Edison Cell

Secondary Cell battery charging

  • Battery Charges
  • Charging Current
  • Specific gravity measurement
  • Voltage Measurement
  • High rate discharge tester
  • Constant Current method
  • Constant potential method 
  • Rectifier method
  • Trickle Charge
  • Use
  • Initial Charge
  • Freshening Charge
  • Boost Charge

Secondary Cell Battery - Care and Maintenance

  • Care and Maintenance of batteries

Method of Maintenance and Servicing of Battery Chargers

  • Sectionalizing the Faulty State
  • Input Stage
  • Transformer Stage
  • Rectifier Stage
  • Imbalance in Three-phase rectifiers
  • Selenium rectifier-life
  • Testing rectifier diodes
  • Open Input filter capacitor
  • Shorted input filter capacitor
  • Open output filter capacitor
  • Shorted output filter capacitor
  • Open filter Choke
  • Excessive hum
  • Visual Inspection 
  • Trouble-Shooting technique in battery charger

Primary Cells

  • Cell
  • Difference between Primary and Secondary Cells
  • Primary Cells
  • Simple voltaic Cell
  • Characteristic of the Cell 
  • Internal Resistance of a Cell
  • Electromotive Force of a Cell
  • Potential Difference of a Cell
  • Capacity of the Cell/Battery
  • Energy Density of the Cell
  • Example
  • Shelf Life
  • Precautions to Be Followed in Using Cells

Grouping of Cells

  • Necessity of Cell Groupings
  • Series Cell Connections
  • Precautions While Connecting Cells in Series
  • Parallel Connection
  • Example
  • Series-Parallel Connection
  • Example 
  • Testing Primary Cells or Batteries

Secondary Batteries – Principle, Maintenance and Recharging

  • Secondary Batteries
  • Lead-acid, wet Type Cells
  • Principle of chemical action
  • Discharging of lead-acid cells
  • Charging of lead-acid cells 
  • Important Tips
  • Construction of lead-acid batteries
  • Current ratting of Lead acid batteries
  • Effect of temperature on ah capacity of lead-acid batteries
  • Specific gravity of electrolyte
  • Topping up of lead-acid battery cells
  • Do not add tap water or well water for topping up this will reduce cell life
  • Care and routine maintenance of lead-acid batteries
  • Recharging lead-acid batteries
  • Constant current battery charging
  • Constant voltage battery charging
  • Trickle Charging
  • Float charging
  • Precautions for Charging Battery

Testing of a Battery

  • Dry Cells
  • Wet Cells
  • Primary Cells
  • Secondary Cell (Lead acid Battery)
  • Lead acid Battery
  • Construction
  • Chemical Reactions
  • Discharging
  • Charging
  • High rate discharge tester
  • Voltage Check of battery

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