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What is the cold rate of a battery?(a) Lasting power of a battery on a small load(b) Rate of current for 20 minutes with a minimum cell voltage of 1.5 V(c) The current which the battery can supply continuously for 30 seconds with minimum cell voltage 1.2 V(d) Time for which the battery can supply 25 A at 80℉ with minimum cell voltage 1.75 VThe question was asked during a job interview.This intriguing question originated from Storage Batteries topic in division Nonconventional Engines, Conventional Energy Sources & Cooling System of Automobile Engineering

Answer»

Right option is (c) The CURRENT which the battery can supply continuously for 30 seconds with minimum cell voltage 1.2 V

Explanation: It is a measure of the WORST CONDITIONS under which a battery is expected to deliver current, e.g., during starting the engine and operating under EXTREME cold. The cold rate of a battery is the current which the battery can supply continuously for 30 seconds with minimum cell voltage 1.2 V.



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