XS Power SB1050-31 1050F SuperBank Ultracapacitor
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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.
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An ultracapacitor bank operates on completely different physics than a conventional battery, and the XS Power SB1050-31 harnesses that difference to solve one of car audio's most persistent problems: voltage sag under bass hits. This Group 31 farad capacitor bank stores and releases energy almost instantaneously, delivering high current bursts that a battery simply cannot match on its own.
Stop Headlight Dimming, Sharpen Every Bass Note
Paired with an existing AGM battery or as a standalone power buffer, the SB1050-31 functions as an advanced voltage stabilizer that keeps your system voltage rock-solid when your amplifiers call for massive current. The SPL capacitor bank design means cleaner, tighter bass transients and the end of headlight dimming during listening sessions — a measurable upgrade for any serious car audio system that outpaces the alternator's ability to respond instantly.
Specifications
| Battery Type | Ultracapacitor |
| BCI Group Size | Group 31 |
| Volts | 17.1 |
| Included Hardware | M6 Hardware Included |
| Warranty | 1 Year — view warranty (PDF) |
| Instructions | Download instructions (PDF) |
| Farads | 1050 |
| Max Power Rating | 8000 Watts |
| Operating Temperature | -40F-149F |
| Watt Hours (Wh) | 38.2Wh |
| Length (Inches) | 12.99 |
| Width (Inches) | 6.81 |
| Height (Inches) | 8.43 |
| Weight (lbs) | 32 |
| Weight (kg) | 14.5 |
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
