Here's the deal.

I drive my car once or more everyday, Monday - Friday. I often park it on Friday night and don't drive it again until Monday morning.

Lately, it is completely dead on Monday. Question is, is it the battery or something else? I know the easy way to check is just unhook it for the weekend but that is a PITA. Any idea what else it could be? Ideas and thoughts welcome.

 

Theres either a drain somewhere in your system or your battary is just too old to keep the charge over the weekend. That definetly shouldnt be happening.

 

Go to auto zone or advance and have the test your battery.

 

u could try this test:
if you have a digital multimeter that has an ampere function, you can use that to monitor the current drain while the car is off, be sure to close all accesories and lights( caution : the multi meter can only handle a max of 10 amps for a short period of time, be sure to turn of all accesories). the standby current draw should not be more than 0.15 amperes. Also you may want to arm the security system ( if you have one).

 

When using the amp meter, give it time too for the modules to go to sleep. That is the best method for determining a drain on the battery