Tuesday, 7 January 2020

Battery: Type of Batteries and Applications Lead- Acid batteries, Mercury Batteries, Lithium and Silver Oxide Batteries

Types Of Batteries With Applications 

Lead-Acid Batteries
Lead acid Battery
Lead acid Battery 

  • Lead-acid batteries are the rechargeable kind of batteries invented in the 1980s. 
  • These large, heavy weight batteries find the major application in automobiles as these fulfill the high current requirements of the heavy motors. 
  • The composition of Lead-Acid battery changes in charged and discharged states. 
  • A combination of Pb (negative) and PbO2 (positive) as electrodes with H2SO4 as electrolyte in charged form and PbSO4and water in discharged form.


  • The major application of lead acid battery is in starting, lightning, and ignition systems(SLI) of automobiles. 
  • Its other form, wet cell battery is used as backup power supply for high end servers, personal computers, telephone exchanges, and in off grid homes with inverters. 
  • Portable emergency lights also use lead acid batteries.

Mercury Batteries

Mercury Battery
Mercury Battery

  • Mercury batteries are non-rechargeable batteries that contain mercuric oxide with manganese dioxide. 
  • They are deep discharge batteries and voltage level does not fall below 1.35V until 5% energy level is reached. 
  • These batteries are less popular because of low output voltage. Furthermore, mercury is toxic and can cause hazards for humans.


  • The flat discharge curve makes this battery useful for photographic light meters and electronic devices such as to run the real-time clock of CPU.

Lithium and Silver Oxide Batteries

  • Lithium batteries are rechargeable (secondary) batteries, where lithium in its pure ion compound form is used. Depending on the design and chemical compounds used, lithium batteries can produce voltages from 1.5 Volts to 3.7 Volts. 
  • The most common type of lithium battery used in consumer applications uses manganese dioxide as cathode and metallic lithium as anode. 
  • Compared to ordinary zinc–carbon batteries or alkaline batteries, the voltage production of lithium cell is twice from them.
  • Silver oxide batteries are expensive, small to large sized primary cells that offer better run time than alkaline batteries. They are usually suitable for powering low-current electrical devices.
  • They use silver oxide as positive (cathode) electrode, zinc as negative (anode) electrode plus alkaline electrolyte, normally Potassium hydroxide (KOH) or Sodium Hydroxide (NaOH). 


  • These long life batteries are used in portable consumer instruments like calculators, iPods, digital diaries, wrist watches and stop watches, toys, and artificial pacemakers. 
  • Lithium cells can also be used as a replacement of alkaline batteries in many devices, such as cameras and clocks. 
  • Although they are more expensive, lithium batteries will provide much longer life. 
  • Silver Oxide batteries are used in military and submarines.
  • From alkaline batteries to silver-oxide, the different types of batteries are used in different applications.



Post a comment

Popular Posts