This is a rechargeable Nickel cadmium battery. Based on the information given on

Question

This is a rechargeable Nickel cadmium battery. Based on the information given on the battery, calculate the total energy of the battery in joules (J). Voltage: Battery energy: Weight of battery: What is the energy density (measured in J/g) of the battery? This battery cost S3.50. What is the cost of energy storage in J/$? Lead acid batteries in cars carry a huge charge, but they also weigh e lot. One such battery is rated at 12 V, has a capacity of 55 Ah and weighs 44.5 pounds. Calculate the total energy of the battery and the energy density of the battery. Battery energy: Weight of battery: What is the energy density (measured in J/g) of the battery? This battery cost $140. What is the cost of energy storage in J/$?

Explanation / Answer

Battery 10 -

Voltage = 12 V

Capacity = 55 Ah

Energy = V* I * t

= 12 V * 55 Ah * 3600 sec/h

Energy = 2.376x106 J

Weight = 44.5 pounds = 20184.86 g

Energy density = Energy / Weight

= 2376000 / 20184.86

Energy density = 117.71 J/g

Cost of battery = $140

Cost of energy storage =  2376000 / 140

= 16971.43 J/$

Cost of energy storage = 1.697x104 J/$

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