XS Power SB500-51 500F 12V SuperBank Ultracapacitor
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The XS Power SB500-51 12V SuperBank brings 500 farads of genuine ultracapacitor performance to the compact Group 51 form factor, making it a natural choice for import builds, tight underhood installs, and any platform that runs a standard Group 51 battery. Its role is that of a dedicated voltage stabilizer and transient buffer: when your amplifiers call for a burst of current that the main battery cannot supply fast enough, the SB500-51 steps in and fills that demand without hesitation.
Competing at SPL events or simply trying to get the most out of a daily-driven high-wattage audio system, the XS Power SB500-51 delivers real, measurable improvements in voltage stability and low-frequency punch. It is a far more effective solution than the single-farad power cap designs of years past, offering hundreds of times more capacitance in a battery-shaped package that installs cleanly and integrates with your existing 12V system without added complexity.
Specifications
| Battery Type | Ultracapacitor |
| BCI Group Size | Group 51 |
| 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) | 9.04 |
| Width (Inches) | 5.43 |
| Height (Inches) | 8.19 |
| 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
