Quality of pictures

What I noticed is that our camera battery should be charged fully. If our Camera battery is robust with full horsepower the pictures look beautiful. Towards the end of it's capacity somehow the electronic mechanism inside it probably cannot function well. Well...this is my own opinion....hehe....I'm not expert.
There is something else also I heard about recently. If we keep the fully charged batteries idle gradually the power gets lost. So charge it, use it fast. Better to recharge when the battery is down for it to get fully charged.