Is it generally true that batteries can be charged 1 hr per day since the last full charge if they are just sitting. If my plane has been sitting for 4 or 5 days on a full charge, will 4 or 5 hrs on the charger be ok? Would 1 hr EACH day be better. I haven't been cycling them everytime. I do it about once per month. I heard that overcycling them will shorten their life.