3. A 12.6 volt lead-acid battery for use in RVs costs $120 a can be recharged 30

Question

3. A 12.6 volt lead-acid battery for use in RVs costs $120 a can be recharged 300 times in their life span. nd is rated 135 A h. These batteries a) What is the energy in kW h stored in a fully charged battery? b) If electrical energy can be bought from a power grid for $0.12/ kw h, what is the monetary value of the energy stored in the fully charged battery? c) Over the life of the battery, what is the monetary value of the energy that can be stored in the battery? d) If this battery was used to store solar generated power in a home environment that has access to the power grid, comment on the cost effectiveness of the battery

Explanation / Answer

3.(A) Energy = (12.6 Volt)(135 A h)

= 1701 Wh

= 1.7 kWh

(B) value = energy x cost

= 1.7 x 0.12

= 0.20 dollars

(C) value = 300 x 0.20 = 61.2 dollars

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