battery

I did a quick search and found some dead battery threads, but nothing relating to what my situation will be. I am leaving for 10 days and the JL will be parked untouched the entire time. I’m the past with my WRX with aftermarket remote start, the battery would be dead after 4 days. Has anyone...

Due to the quantity and length of ESS battery and electrical related threads, researching issues can be time consuming and confusing. I am using this post to make information and related links easily available. This first post will serve as a quick reference and I'll use the second post to...

I thought I'd start this thread for discussing the operation of the IBS. First is a link to the technical description of the IBS from Bosch. The rest of the post is my interpretations and observations...

Checking the voltage of the batteries is a good start, but a battery with good voltage can still fail when under a load. To really test the batteries, you need a load tester. Some auto parts stores will load test your battery for you, but having dual batteries complicates the testing. To do my...

Here's my attempt at a diagram that illustrates the battery connections for the 3.6L ESS dual batteries. Hopefully this will help make sense of why things work the way they do. I tried to show that when you pull the battery terminals off of the battery, there is still an electrical connection...

To make things short and sweet I've been doing a decent amount of wheeling with my JL, no issues until about 2 months ago. While wheeling with a couple jeeps and two F250 super duties I had to use my winch for the first time. One truck got stuck, pulled him out, 2 minutes later the same truck...

HAD TO TAKE MY JLU IN BECAUSE SOMETHING IN THE JEEP IS DRAINING POWER. THE NORMAL AMPS WHEN IT'S OFF SHOULD BE 0.3, BUT MINE IS AT 1.5, ABOUT 6 TIMES WHAT IT SHOULD BE. DEALER CAN'T FIND THE ISSUE. ANYONE EXPERIENCING THIS ISSUE?

So the V6 models use two batteries. What happens if you disconnect the small battery? What if you disconnect the big battery? The results are ... non-intuitive.

Well this video just confirmed that the JL has two batteries. I'm happy I saw this because I'm sure I would have just disconnect the main battery and thought I was good to go.

Longtime reader, first time poster....recently upgraded my JKU Sahara for a JLU Sport S and loving it! I was wondering if this was an issue or not - when starting or turning off my jeep, there will be a quick 1-2 seconds of a quick rapid clicking sound (same sound when you try to start a car...