Truck has to be jumped when left off.

[leo cervantes]

Im forced to jump start my truck if i leave it off for too long it doesn't have enough power to start again i have had a system in it for almost a year so i dont think thats the issue it does not die or lose power when driving.

[txab]

How long is too long?

[asilverblazer]

Have the battery tested, its not holding a charge. Continued use will over tax the alternator eventually.

 

[KARNUT]

You didn’t say what the system is that was installed. I’ve have aftermarket alarms on vehicles. It doesn’t take too long that if you don’t drive them at least every two weeks the battery will start to fail. I drive one once a month. It now has a tender in it. So far the battery life has doubled.

[Jsdirt]

Anything built before 1996 can sit for months, and still fire up without issue. I just had to move a '94 Ram in my yard - I haven't started it in over 6 months. Didn't even need a jump pack, lol.

 

On the other side of that is my '07 Silverado 1500, with the myriad of computers, & wiring. Since I've taken it off the road, I have to throw the charger on it at LEAST every 2 weeks. Those damned magic boxes just constantly draw. Even the EVAP system does a seal check when parked with the right fuel level.

 

I get a minimum of 9 years out of batteries in all my 30 year old or older vehicles. Usually 10 or more. Can't get more than 6 out of a 21st century model.