The ampere-hour efficiency of a leadacid cell is normally between

20 to 30%
40 to 50%
60 to 70%
90 to 95%

The correct answer is: C. 60 to 70%

The ampere-hour efficiency of a lead-acid cell is the ratio of the ampere-hours delivered by the cell to the ampere-hours that would be delivered by an ideal cell with the same capacity. The ampere-hour efficiency of a lead-acid cell is typically between 60 and 70%. This means that for every 100 ampere-hours of charge that are put into a lead-acid cell, the cell will typically deliver between 60 and 70 ampere-hours of discharge.

The ampere-hour efficiency of a lead-acid cell is affected by a number of factors, including the temperature of the cell, the state of charge of the cell, and the rate of discharge. The ampere-hour efficiency of a lead-acid cell is typically lower at higher temperatures and at lower states of charge. The ampere-hour efficiency of a lead-acid cell is also typically lower at higher rates of discharge.

The ampere-hour efficiency of a lead-acid cell is an important factor to consider when choosing a lead-acid battery for a particular application. The ampere-hour efficiency of a lead-acid battery will affect the overall performance of the battery and the amount of energy that the battery can deliver.

The following are brief explanations of each option:

  • Option A: 20 to 30%. This is a lower ampere-hour efficiency than is typically seen in lead-acid cells. This could be due to a number of factors, such as a low-quality cell, a high temperature, or a high rate of discharge.
  • Option B: 40 to 50%. This is a more typical ampere-hour efficiency for lead-acid cells. This is a good balance between performance and cost.
  • Option C: 60 to 70%. This is a higher ampere-hour efficiency than is typically seen in lead-acid cells. This could be due to a high-quality cell, a low temperature, or a low rate of discharge.
  • Option D: 90 to 95%. This is an extremely high ampere-hour efficiency for lead-acid cells. This is not typically seen in lead-acid cells.