XS Power SB150-30Q 150F 12V SuperBank Ultracapacitor
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Designed around the Group 30L battery envelope, the XS Power SB150-30Q 12V SuperBank provides a direct-fit ultracapacitor solution for vehicles that use this less-common but widely available group size. With 150 farads of car audio capacitor capacity, it provides meaningful transient buffering that helps amplifiers maintain voltage stability during heavy bass hits, reducing headlight dimming and preserving sound quality under load. The Group 30L form factor makes the SB150-30Q a unique and valuable option for builds where other SuperBank sizes would require a bracket or custom tray.
The XS Power SB150-30Q operates as a high current capacitor bank rather than a battery, meaning it focuses entirely on rapid charge and discharge cycles rather than sustained energy delivery. This makes it the ideal partner for a properly sized AGM battery in applications where the load profile is dominated by short, intense amplifier transients rather than long, sustained draws. A smart, targeted upgrade for the right vehicle platform.
Specifications
| Battery Type | Ultracapacitor |
| BCI Group Size | Group 30/30L |
| Volts | 15 |
| Included Hardware | M6 Hardware Included |
| Warranty | 1 Year — view warranty (PDF) |
| Instructions | Download instructions (PDF) |
| Farads | 150 |
| Max Power Rating | 1200 Watts |
| Operating Temperature | -40F-149F |
| Watt Hours (Wh) | 8.16Wh |
| Length (Inches) | 6.57 |
| Width (Inches) | 4.97 |
| Height (Inches) | 6.58 |
| Weight (lbs) | 2.5 |
| Weight (kg) | 1.13 |
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
