Motor problems

Been fishing my fiberglass G3 for the last month and when I get back home I find the battery has lost over 60% of power. Went out last Thursday and fished 8 hours and when I started heading back to the ramp the battery was dead. I switched to my trolling motor to get back home. Thank goodness It started!!!!! when I got back home I got on U tube and found my rectifier was my problem. I got on line and ordered the part. Well Its gonna be a week before the part gets here. Thank for U Tube.