Also known as load testing, or discharge testing, capacity testing is a dynamic test whereby a simulated load (in amperes or watts) is imposed on the battery system for a specified time. The discharge continues to a defined end-of-discharge (EOD) voltage, referencing a measured battery temperature taken at the start of the test.
The capacity corrected to 25°C is 88.7% and the battery passed the test. Failure to use K t results in a capacity calculation of 96.7%, an error of 8%. The only way to know the capacity of a battery is to perform a capacity test under specific test conditions. Tests should be conducted periodically based on the applicable IEEE recommended practice.
When the test time reaches three hours, the battery voltage would be 105V for a capacity of 100%. Test results frequently result in a capacity of more than 100%, which is why it is important the test be run to the EOD voltage rather than terminating the test at 100% capacity.
The Institute of Electrical and Electronics Engineers (IEEE) recommended practices relating to capacity testing of lead-acid and nickel-cadmium batteries are the same documents that provide information relating to maintenance.
There is no substitute. What is capacity testing? Also known as load testing, or discharge testing, capacity testing is a dynamic test whereby a simulated load (in amperes or watts) is imposed on the battery system for a specified time.
Additional performance tests should be conducted at five-year intervals until excessive capacity loss is observed. In nickel-cadmium batteries, excessive capacity loss is defined as more than an average of 1.5% per year of rated capacity from that measured during the previous performance test.