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





Keep your lithium house batteries charged efficiently while driving with the Expion360 12V 25A DC-DC Charger. Designed specifically for LiFePO4 (LFP) deep cycle batteries, this compact mobile charger pulls power from your vehicle’s alternator through the chassis battery and delivers a precise 2-stage charging profile optimized for lithium chemistry.
Using a constant current (CC) and constant voltage (CV) charging algorithm, the charger safely delivers 14.6V at 25 amps — ensuring rapid, controlled charging while protecting battery longevity. Whether you're building out a camper van, upgrading an RV system, or outfitting an overland vehicle, this DC-DC charger provides reliable charging performance on the move.
Its compact footprint makes installation simple, even in tight electrical bays. With IP68 waterproof protection and fully potted circuitry, the unit is engineered to withstand harsh mobile environments. Ignition control functionality ensures the charger operates only when the vehicle is running, preventing unwanted battery drain.
Compatible with all alternator types, including modern smart alternators, the Expion360 25A DC-DC charger is an ideal solution for efficient, on-the-road lithium charging.
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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