I agree with Doophus. The battery must be old/weak. Once you start having these kind of problems, you really need to install a new battery. It'll just get worse.
I do think that the 8 starts a day with short charging runs isn't helping matters with a weak battery.
Obviously when the new battery is installed have your charging system checked, just to be sure all is well.
My vote - new battery
Artsmart.... if your cell phone charger drained your battery in a couple days, I would consider replacing your battery as well
sorry just my humble opinion
