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How many minutes can a battery of two-minute rate supply before the voltage dropping below 1.5volts?

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in Automotive Engine Design by (137k points)
How many minutes can a battery of two-minute rate supply before the voltage dropping below 1.5volts?

(a) 80

(b) 60

(c) 20

(d) 40

This question was posed to me during an interview.

Query is from Battery Charging topic in portion Storage Batteries of Automotive Engine Design

1 Answer

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Best answer
The correct answer is (c) 20

For explanation I would say: Twenty-minute rate of a battery represents the rate of current a battery can deliver continuously for 20 minutes, the cell voltage not dropping below 1.5. The temperature of the battery at the start of the test is brought to 80 degrees.

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