KSGER T12 soldering station backup battery parasitic drain found and fixed. The battery was draining through a 10K Ohm resistor that had shorted to ground.

Here I show how I found it, what caused it, what the nominal parasitic drain on the 2032 backup battery should be, and approximately how long we can expect one to last in our T12 soldering stations.

Identifying Backup Battery Drain Problem:
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KSGER T12 Soldering Iron Review:
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