Jeep JK Advanced Dual Battery Systems by Benchmark Designs are complete turn-key packages. We offer a “Good-Better-Best” approach with our Stage 1, 2 & 3 packages. With any of our packages, the only things you have to buy separately are the batteries. They are the complete mechanical and electrical solution for an easy dual battery installation. These are not partial DIY kits. We’ve done all the design and assembly work to make this a straightforward installation Our components are the best in the business and are what the rest of the market attempts to copy. Benchmark Designs engineered the very first JK Dual Battery Kits on the market and we are continually evolving our kits to offer the very highest quality components, materials and manufacturing methods. Evaluate our quality and kit completeness to other lower cost competitors and see why our systems are the logical choice. Don't sacrifice on quality when you're using your vehicle for remote exploration. All components are ruggedized and designed for harsh off-road environments. Marine grade, mil-spec and aircraft grade components and manufacturing processes are used throughout. Our battery cables, wiring harnesses and electronics are all manufactured using premium components and quality controlled procedures. Our JK Dual Battery Systems are compatible with the following batteries: Odyssey PC1500 34/78 & 34M Diehard Platinum P-1 & PM-2 Optima Yellow Top 34 & 34/78