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


Expand your lithium battery bank safely and efficiently with the Expion360 400A Aluminum Bus Bar Set. Designed specifically for Expion360 Group 24 and Group 27 lithium batteries, these precision-fit bus bars allow you to parallel connect multiple batteries to increase overall amp-hour capacity while maintaining optimal electrical performance.
Rated at 400 amps, these high-conductivity aluminum bus bars are engineered to create a secure, low-resistance connection across compatible Expion360 60Ah, 80Ah, 95Ah, 100Ah, 120Ah, and 132Ah batteries. By minimizing resistance at the terminal interface, they improve current flow and overall system efficiency — critical for high-demand RV, marine, overland, and off-grid power systems.
Built to exact dimensions for proper terminal alignment, this bus bar set provides a clean, professional installation solution for expanding your lithium battery bank.
We ship nationwide and internationally. Most in-stock items leave our shop within 1–3 business days. Made-to-order and oversized parts may require additional lead time; any special timing will be noted on the product page.
If an order is placed outside of our normal business hours (Monday–Friday), we will process it as soon as possible once our team is back in the shop during regular operating hours. Weekend orders will be handled the next business day.
We want you stoked on your gear. Eligible items may be returned within 30 days of delivery for a refund or exchange.
Many products include a manufacturer warranty. We’re happy to help facilitate claims—reach out with your order number, photos, and a description of the issue.
Questions about shipping or returns? Get in touch—our team is here to help you get trail-ready.
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