Originally Posted by kryptoknight
I left those 2 GEN ACE fully charged for more than 6 months without using it during the winter season, would that be enough to kill it?
Everything you wanted to know about the care of lipo batteries:
Short answer: leaving a battery at full charge for an extended amount of time is not good for the battery.
Edit: Also from what I understand the best way to monitor the condition of your batteries is measuring the Internal Resistance (IR) of the battery. Better chargers can do this. Mine does and I write down the IR of each battery on the battery the day I get them and I will now check that to determine how my batteries are doing.