Originally Posted by hotrodding vet
I've done both I've kinda got it narrowed down to the belt is stretched or I need a bigger amp alt
If the belt is stretched, replace it...If your alternator is stock (70 amp or less) you need a bigger alternator. Check your out put at the battery, longer cables (maybe thinner cables than required) can effect the input to your battery.
If you externally charge the battery (with a plug in charger) and leave it for several days and it loses charge, you either have a bad battery or an electrical short in your vehicle.
Hope this helps