Direct: (503) 987-4002
Main: (503) 987-4000


Expand your lithium battery bank with confidence using the Expion360 400A Extended Bus Bar Set. Designed specifically for Expion360 Group 24 and Group 27 lithium batteries, these precision-fit bus bars allow you to parallel connect batteries for increased amp-hour capacity and improved system efficiency.
Engineered from high-conductivity aluminum and rated at 400 amps, these extended bus bars provide a secure, low-resistance electrical connection across compatible 60Ah, 80Ah, 95Ah, 100Ah, and 120Ah Expion360 batteries. By reducing resistance at the terminal interface, they help maximize power transfer and system performance.
These extended bus bars are ideal for connecting two dual battery tray systems to create a quad-battery configuration. They are also required when installing the Expion360 external heating system alongside single battery trays, ensuring proper spacing between batteries while maintaining structural integrity.
Whether you’re building a high-capacity RV battery bank, overland power system, or off-grid installation, the Expion360 Extended Bus Bar Set provides a clean and professional solution for expanding your lithium setup.
We ship throughout the United States. Most in-stock items leave our shop within 1–3 business days. Made-to-order, special-order, drop-shipped, freight, and oversized products may require additional processing or lead time. Any known special timing or availability information will be noted on the product page when applicable.
Orders placed outside of our normal business hours will be processed as soon as possible once our team returns during regular operating hours, Monday–Friday. Orders placed over the weekend or on a holiday will begin processing the next business day.
Eligible items may be considered for return within 30 days of delivery. All returns require prior authorization from PAD Overland. Return requests are subject to our return policy as well as any applicable manufacturer or supplier return requirements.
Approved customer-requested returns are subject to a 35% PAD Overland restocking fee, plus any additional return-related fees imposed by the manufacturer, supplier, or distributor.
Many products sold by PAD Overland include a manufacturer warranty. Warranty claims are subject to the individual manufacturer’s warranty terms and procedures. We are happy to help facilitate the process when possible. Please contact us with your order number, photos, and a description of the issue.
Questions about fitment, shipping, return eligibility, or a special-order product? Please contact us before placing your order. Our team is happy to help make sure you are ordering the correct product for your vehicle.
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