ly if the discharge is caused by excessive battery drain. Normal current draw should be less than 0.50 milliamps. At that rate a battery can stay charged for 30-45 days. If you think something is drawing too much power, read this post on how to troubleshoot it

Not unless you connect it to a charger at night as there is obviously something wrong and it is not holding a charge, probably need a new battery, Good Luck

if the battery is good and is not starting the next day because of a parasitic draw , yes

no - if it is repeatedly needing jump start, then your alternator is probably bad and needs replacing

NO....................old batteries get so they can't hold a charge..............get a new one