
XS Power SB500-49 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.
Sized for the Group 49 footprint found in many European and import platforms, the XS Power SB500-49 12V SuperBank makes it easy to bring 500 farads of ultracapacitor performance to vehicles that were previously underserved by aftermarket power storage options. The SPL capacitor bank design delivers ultra-fast current on demand, ironing out the voltage spikes and dips that show up when powerful amplifiers demand more than a battery alone can supply in an instant.
The XS Power SB500-49 is a true high current capacitor solution rather than a simple battery replacement, designed to work alongside your existing power system as a dedicated transient buffer. If you have been fighting headlight dimming or noticing bass that softens on the hardest hits, installing this farad capacitor bank in your Group 49 location is one of the most direct fixes available for cars that use this common import-market battery size.
Specifications
| Battery Type | Ultracapacitor |
| BCI Group Size | Group 49 |
| 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) | 13.9 |
| 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


