XS Power SB75-30Q 75F 12V SuperBank Ultracapacitor
Many in-stock orders ship within 1-2 business days, but timing varies by item. Custom, built-to-order, oversized, special-order and supplier-direct products may need extra processing time. Free shipping applies to qualifying orders over $99 in the contiguous US. Approved returns may be subject to a restocking fee.
Most products are covered by the manufacturer's warranty against defects. Damage from over-powering or improper installation isn't covered — we'll help coordinate any valid claim.
Tell us your vehicle, subwoofers and electrical setup and our team will help you match the right gear. Reach out before you buy.
Fitted to the Group 30L battery footprint, the XS Power SB75-30Q 12V SuperBank gives vehicles that use this group size their own dedicated direct-fit ultracapacitor option. Its 75 farad farad capacitor bank rating makes it well matched for smaller audio systems that need transient buffering rather than the massive farad counts required by multi-kilowatt competition builds. Drop-in compatibility with the Group 30L tray keeps the install clean and professional without requiring brackets or adapters.
The XS Power SB75-30Q is particularly well suited for compact import vehicles, older domestic platforms, and any build where the Group 30L battery is the factory-specified size. It serves as a dedicated voltage stabilizer that keeps the 12V rail from sagging on bass peaks, and its high current capacitor architecture means it can absorb regenerative spikes from amplifiers during transitions, protecting downstream components as well as improving sound quality.
Authorized XS Power dealer at JS Ultimate Sounds. Free shipping on orders $99+.
PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.
For more information, visit www.P65Warnings.ca.gov
