| 摘要 |
PROBLEM TO BE SOLVED: To provide structure capable of accurately measuring the voltage of pole column 9 of a lead-acid battery. SOLUTION: A bushing 3 having an auxiliary terminal 1 upwardly projecting out is cast, and used by inserting in a lid 4. The generally columnar pole column 9 in which the bushing 3 and a brass core 2 are buried is fitted in, and the fitting portion is welded to form a welded portion 6. The auxiliary terminal 1 is positioned at a position lower than the brass core 2, and the auxiliary terminal 1 is clipped by crocodile clip, thereby measuring the voltage of the pole column 9. |
