I just want to add that you most likely should not be leaving your battery on the charger all day long. Most of the time this will ruin your battery. I'd say just charge it until it gets hot (easiest way to determine if your battery is charged) and then take it off. Then maybe throw it back on the charger for a few minutes the morning before you leave to play.
Again, thats just my two cents, others may have some better advice or "tricks" for you.
"I Said mister, mister with your beard so long
Won't you be a saint and tell me
Just where I'm going
He pointed to a conch shell and then
To the lime and said this is all
I really need to get by"