I have had trouble keeping the battery working in my 630g insulin pump.It sometimes tells me that i need a new battery and if i don't check it immediately, it will go black.Every time i change the battery it is not a quick easy change.The metal on the cap falls off and i find it hard to get it just right to get it back on.I do not see any black dots on mine.I have always gotten it back working but it takes me several times putting the cap back on.I have also lost the contour next blood sugar tester after going through security at the airport out of my carry on.Fda safety report id# (b)(4).
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