I was reading various posts on other forums and it seems that we should not be keeping our batteries charged if we are not going to using them right away. They should be stored in a discharged state. if so do we need a discharger or can we just take out the battery at the end of a flight with the red battery warning on the dji phantom for a proper discharge. Or should we drain it completely. I also seem to have read that if the battery is in a fully charged state and not being used, keep it in a 40 degree fridge to prevent deterioration. Is this all speculation? What is the best care for the battery and what is needed in hardware to maintain the batteries such as dishchargers?