The leakage may migrate along the wire under the insulation.
I have a high end receiver that was in storage for a long time with the backup battery installed.
The battery leaked destroying the surrounding circuit board, migrated under the wire insulation, through a glass feedthrough, under the wire insulation through a card edge connector damaging the plugged in board.

Glenn

On 2/27/2023 2:51 PM, Steve WD8DAS via Milsurplus wrote:


The external mounting of batteries for bench devices is a good idea, Hue.

I've taken to putting a small ziplock bag around the 9v battery in multimeters, etc.  The wires come out through a small opening in the zip end, but otherwise the battery is sealed and wrapped in plastic.  I'm hopeful it will contain the leakage and reduce the damage, including the corrosive vapors from the batteries I've seen damage whole areas of pc boards and components. 


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Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            [email protected]    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI, FRA, NRA-LM    ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"