Uses of 9v battery connector?

1.	Uses of 9v battery connector?
Answer» TION:The nine-volt battery, or 9-volt battery, is a common size of battery that was INTRODUCED for the early transistor radios. It has a RECTANGULAR prism shape with rounded edges and a polarized snap CONNECTOR at the top. This type is commonly USED in walkie-talkies, clocks and smoke detectors.

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