XS Power SB500-48 500F 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.
Engineered for the Group 48 battery location — a common factory fitment in late-model GM and import platforms — the XS Power SB500-48 12V SuperBank integrates directly into vehicles that were designed with that footprint in mind. Delivering 500 farads of dedicated ultracapacitor storage, it gives your amplifiers a high-speed current reservoir that eliminates voltage dips on the heaviest bass hits and removes headlight dimming from the equation entirely. The high current capacitor cells at its core respond far faster than any battery chemistry can manage.
The XS Power SB500-48 is the right car audio capacitor bank for newer vehicles where the factory battery location dictates a Group 48 unit. Rather than fighting the OEM tray with a custom box or a different-size battery, you drop this farad capacitor bank right in and immediately gain the transient performance that serious audio systems require. It pairs beautifully with an upgraded high-output alternator and a primary AGM battery to form a complete, engineered power solution.
Specifications
| Battery Type | Ultracapacitor |
| BCI Group Size | Group 48 |
| Volts | 16.2 |
| Included Hardware | M6 Hardware Included |
| Warranty | 5 Year — view warranty (PDF) |
| Instructions | Download instructions (PDF) |
| Farads | 500 |
| Max Power Rating | 4000 Watts |
| Operating Temperature | -40F-149F |
| Watt Hours (Wh) | 18.2Wh |
| Length (Inches) | 10.94 |
| Width (Inches) | 6.93 |
| Height (Inches) | 7.48 |
| Weight (lbs) | 11 |
| Weight (kg) | 4.98 |
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
