2018+ Jeep JL / JT Stock Battery Replacement KitUpgrade to Bigger Batteries While Retaining the ESS We may never understand why Jeep decided to put the ESS battery in an inaccessible location under the fuse box, but we have a fix for that. The kit will replace the stock plastic battery tray with our new heavy duty steel battery tray. This is the same battery tray that comes with our full dual battery system for the JL & JT. This kit is perfect for Jeep owners who like the ESS system and do NOT want
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