It seems that he’s not alone, so he set out to reverse engineer the battery charging circuit to see if there was a fix. Boy is there, what he found is the diode above, apparently installed ...
[Jay Kickliter] built his own coin cell battery recharger ... In this case he tailored the charging circuit around MCP73832 IC and chose components best suited for charging his 110 mAh LR2450.
This charger unlocks the capability of bulk overnight charging on a single 15A circuit and rapid daytime charging while going ...