The basic quality philosophy should be one of
prevention, problem detection, and assurance. Refer to Section 4.5
for a discussion of testing issues relevant to all batteries. To meet this quality philosophy, certain areas must be checked or monitored.
Typical Process Checklist
Scales, meters, and gauges should have scheduled
calibration and maintenance intervals.
Statistical quality control methods should be used
Traceability records should be maintained
throughout the process.
Process capabilities must be in conformance with
product specification requirements. To reduce variation, the accuracy of the
manufacturing process should approach two times the product requirements;
i.e. the achieved tolerance should be one-half the allowed
After product manufacture, conformance testing is required. A statistical sample for assurance should be required because the process checks have already assured compliance to specifications. Monitoring should continue through the expected life cycle of the product. Conformance testing should consist of the minimum number of tests and samples to assure conformance to requirements. Process control and capability data should predict conformance to requirements. Only a minimal number of samples should be required for conformance testing.
Typical Monitoring Tests
The following tests can be found in either ANSI C.18 or
the appropriate dry cell military specifications: