XS Power SB75-20Q 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 within the contiguous US. Freight items may require delivery coordination; any shipping exceptions are shown before checkout. 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.
The XS Power SB75-20Q 12V SuperBank targets vehicles with a Group 14L battery footprint, a compact size found in small imports and certain sport compact platforms that often house surprising amounts of aftermarket audio. Getting 75 farads of true ultracapacitor capacity into a Group 14L envelope is an engineering achievement in itself, and it means builders working with these smaller vehicles now have a clean, direct-fit power cap solution rather than a compromised workaround. Your amplifiers do not know or care that the car is small — they demand clean power, and the SB75-20Q delivers it.
For the import enthusiast with a compact car and serious audio goals, the XS Power SB75-20Q represents a meaningful step in the right direction. As a car audio capacitor bank designed for the actual battery location rather than a generic enclosure, it integrates neatly and provides genuine voltage stabilizer function that makes the electrical system more capable of supporting demanding amplifiers on a platform that was never designed with big watts in mind.
Specifications
| Battery Type | Ultracapacitor |
| BCI Group Size | Group 20/20L |
| Volts | 15 |
| Included Hardware | M6 Hardware Included |
| Warranty | 1 Year — view warranty (PDF) |
| Instructions | Download instructions (PDF) |
| Farads | 75 |
| Max Power Rating | 600 Watts |
| Operating Temperature | -40F-149F |
| Watt Hours (Wh) | 4.08Wh |
| Length (Inches) | 6.89 |
| Width (Inches) | 3.43 |
| Height (Inches) | 6.1 |
| Weight (lbs) | 1.5 |
| Weight (kg) | 0.68 |
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
