XS Power SB1050-31 1050F 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.
An ultracapacitor bank operates on completely different physics than a conventional battery, and the XS Power SB1050-31 harnesses that difference to solve one of car audio's most persistent problems: voltage sag under bass hits. This Group 31 farad capacitor bank stores and releases energy almost instantaneously, delivering high current bursts that a battery simply cannot match on its own.
Stop Headlight Dimming, Sharpen Every Bass Note
Paired with an existing AGM battery or as a standalone power buffer, the SB1050-31 functions as an advanced voltage stabilizer that keeps your system voltage rock-solid when your amplifiers call for massive current. The SPL capacitor bank design means cleaner, tighter bass transients and the end of headlight dimming during listening sessions — a measurable upgrade for any serious car audio system that outpaces the alternator's ability to respond instantly.
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
