When technician a says it is important that a full battery test series be done before trying to test the starter system, and technician b says the internal condition of the engine has little effect on the operation of the starting system, then only technician a is correct.
Ideally, before testing the starter system, full battery test series is to be completed. The reason for this is that both the performance of starter and battery system is so closely related.
And it should also be replaced if it fails the load test. The operation of the starting system will be influenced by the internal condition of the engine.
Therefore, technician a is right.
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