If I don’t start my truck in one or two weeks the battery dies. might be getting close to three years.

I last bought it from the dealership, any recommendations what to get next and where?

2007 H3, 113k, Factory Radio

 

Deka
Battery is encased within an Active Cooling Box with an air snorkel to the outside of the engine compartment; OE Exact Fit; Battery located in engine compartment.; 30 Month Warranty; Part CCA: 690; Cranking Amps: 850; Reserve Capacity: 95; OE Group: 86; OE CCA: 640

 

Most Auto Parts stores (regional/national chains) will replace your battery free after you buy it from them. Three years is no worries unless you have let it die repeatedly. I had one that went 9 years before it puked in one of the kid cars.

You may have a parasitic drain that needs to be tracked down. If you are still using the OEM Crappy Azzed Battery Terminal Connectors, I would immediately replace those with a quality aftermarket set like Stingers or your favorite brand and see what that does for your problem. Known #1 mod needed for every H3/H3T Colorado/Canyon. Search it out and you will see just how crappy the OEMs are.

 

You have a parasitic draw on your electrical system.
What is not stock? Radio, amp, alarm, lights, any switches in the interior, etc?

 

2 weeks, not a parasitic draw! I recommend to monitor battery voltage! This past year was mostly 1-2 mile trips, shut off, restart, drive home. I never gave the alternator enough time to recharge the battery. I give the battery some attention when I see 12.2v with an all day 2amp charge.
Here's a cheap(less than $5) voltage tester without opening the hood + battery voltage chart:

 

There are a bunch of I5 H3s that have suffered the parasitic draw problem. Some caused by the rear wiring harness to the license plate light rubbing the chassis = short, poor Battery Terminals Connectors making inconsistent input/output voltage, wet BCMs and/or TCCMs including the harness to them. That is before we even think about aftermarket add-ons.

omedus, when you start a thread asking about your H3....... always: Year; Model (H3s 4); Miles; recent mods and or work done that may impact your issue.

 

Thanks guys.

A few years ago I had parasitic draw after
installing aftermarket radio, put back factory radio and new battery.

Dealership thought it was the aftermarket radio, everything else is original-

Does that mean I can never install aftermarket radio I wanted one with the camera

 

Either it was installed incorrectly or it may have been the adapter harness or possibly have been a bad head unit.

I have an Alpine ilx-w650 with a backup camera like a ton of other people here, no issues.

 

The nasty thing with battery.

They get old and die.

The demise of the new tech move as well...

 

No lift needed to replace battery on the H1-2-3

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