inputs.text: right battery wrong problehem - wife problehems forerunner 305 watchwhen placed charger would indicate charging 3 seconds switch charging completebought battery intent replace existing batterybattery fit perfectly installation pretty easy level soldering skillsplaced back charger expecting problehem solved got messagescloser inspection watch indicated corrosion terminals inside copper connection pin completely dissolvedbest guess sweat somehow got inside corroded terminalsrepair terminals not possible without new partsif similar problehems would suggest inspecting internals watch orderingit understanding send thehem back garmin refurbish 70