Hello guys, I was flying happily my 2 x 5200 mAh original batteries. The oldest one of them (having around 24 cycles) it was charged today from 45% capacity (was at storage voltage for 1-2 weeks) to full capacity 100%. When I plugged it in the charger the first time (the battery was turned off) the green lights didn't start flickering after removing it and plugged it again - this time turned on it began charging. After 30-45 minutes it auto turned off and the led on charger went green. I disconnected it and pressed once on the button to check charge and it was showing 100% all leds green. I went flying with this battery after maybe 2 hours and when I did put in in the phantom it showed only 1 led and a charge of 32%. I decided to fly since I knew I charged it fully 2 hours ago. The flight time was around 20 minutes and only after 15 minutes it began drop from 32%. It initiated autoland normally at 15% and the warning was at 20%. The battery reported the % of charge wrong but it worked perfectly. I wasn't flying high since I didn't want a crash if something went wrong. I never did the 8% discharge on batteries but did it today for both my batteries since I believe the reporting % remaining was wrong. Anyone had this strange behaviour ? I usually fly to 30% then land and when I want to put the batteries in storage I land at 50% and store them like that. Is there something wrong with my technique ? Thanks in advance.