Battery not holding a charge

Hello,

This could be a problem with parasitic draw. Parasitic draw is when you have a short to power or a component that is on all the time draining the battery. Sometimes this type of problem can be a bear to track down, so patience is going to almost be a must here. It is probably going to be a process of elimination but let's start with the basics. I have included a few links down below for you to go to:

https://www.2carpros.com/articles/car-battery-load-test
https://www.2carpros.com/articles/how-to-check-a-car-alternator
https://www.2carpros.com/articles/car-battery-dead-overnight

Please go to these guides and go through them and get back to us with what you are able to find out. If needed we can go from there.

Thanks,
Alex
2CarPros

Hello again,

Okay, that is not really a problem. The only way that an alternator is going to put out enough voltage to charge the battery is to put out more voltage than is in the battery already. It's like having two glasses of water connected at the bottom with a tube. One glass is 3/4 full and the other 1/4 full. They will equalize and each will be half full. Noq suppose they were each 1/4 full. What would happen, nothing. Why. Because one of the glasses does not have more water than the other, so it won't fill. Think of electricity just as you think of water. They have almost identical properties in the laws that govern them.

Thanks,
Alex
2CarPros