i've managed to ruin both of my blu auto batteries and i've only had the kit maybe two and a half weeks. i realize you can ruin them by getting liquid down in them but i have no idea how i got it down in there. every time i fill a carto i always wipe the connector end off, blow through the carto etc. i have another battery in the mail on its way to me but seriously, i can't keep buying them all the time. what am i doing wrong here? is it possible i ruined them some other way? and no, i have never tried to charge it with the PCC plugged in.