Two technicians discuss the state of charge of a battery. Technician A states that a specified gravity of 1.225 at 80F shows the battery has a state of charge at about 75%. Technician B states that it’s possible to use the hydrometer to check the state of charge if you are troubleshooting a maintenance-free battery. Who is correct?
A. Technician A
B. Technician B
C. Both Technicians A and B
D. Neither Technician A nor B
Ans: A. Technician A
Explanation: Tech A is correct. The reason Tech B is incorrect is that maintenance free batteries don't contain any openings. This means there is nowhere to check the gravity with the hydrometer.
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