
XS Power SB500-47 500F 12V SuperBank Ultracapacitor
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The Group 47 battery footprint is common in German-engineered vehicles and certain domestic platforms, and the XS Power SB500-47 12V SuperBank fills that space with 500 farads of serious ultracapacitor capacity. For European car audio enthusiasts who have historically struggled to find quality aftermarket power products that fit without fabrication, the SB500-47 is a welcome direct-fit solution. Install it, connect the terminals, and immediately gain a dedicated high current capacitor bank that keeps your 12V rail stable when the big transients hit.
The XS Power SB500-47 works best as a complement to your primary starting battery rather than a replacement, pairing with it to create a hybrid storage system that handles both sustained load and instantaneous peak demand. As a proper SPL capacitor bank alternative to older power cap designs, it represents a significant upgrade in both capacitance and long-term reliability for builds where the Group 47 footprint is the path of least resistance.
Specifications
| Type | 12-Volt SuperBank Ultracapacitor |
| Group Size | Group 47 |
| Max Power | 4,000 Watts |
| Voltage Range | 12.0 – 16.2 |
| Capacitance | 500 Farads |
| Weight | 11 lbs. |
| Terminal Hardware | M6 Terminal Hardware Included |
Authorized XS Power dealer at JS Ultimate Sounds. Free shipping on orders $99+.
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


