Only flown My M2P once and have charged the controller 5 or 6 times now. I have noticed that the controller battery loses about 1 - 2% per hour after charge has completed (and switched itself off and disconnected from the charger). After a week in the bag, it's totally flat.... This NEVER...
Can I ask what made you decide to keep the 7.85 over the 5.5???
Looking to purchase a Crystalsky in the next couple of days, and have been struggling with my choice (smaller vs Larger)..