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XS Power  SB500-51

12V Super Capacitor Bank, Group 51, Max Power 4,000W, 500 Farad

Item #56607

Condition:   Brand New

Product Highlights

  • 12V
  • 4,000W.
  • high power storage.
  • easy installation.
  • efficiency and performance.

  Free 2-Years Warranty Included!
60 DAYS Returns Accepted.
FREE Lifetime Tech Support.
FREE Shipping.
60 DAYS Price change protection.

$499.99

Reg. Price $529.99  Save $30.00
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  Free 2-Years Warranty Included!
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60 DAYS Price change protection.

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XS Power SB500-51 12V Super Capacitor Bank, Group 51, Max Power 4,000W, 500 Farad


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We are a XS Power authorized dealer so you get up-to-date, fully warrantied products. Shipping is free to the lower 48 states on everything you order!

What's Inside?
  • • 12-Volt Super Capacitor Bank
  • • Owner's Manual
SB500-51 12V Super Capacitor Bank – 500F

Deliver powerful energy support when your electrical system needs it most with the XS Power SB500-51 SuperBANK. Featuring 500F capacitance, up to 10,000A, and 4,000W maximum power, it is built for high-demand automotive applications and frequent power cycling.

 


Frequently Asked Questions (FAQ)


  • • Does the SB500-51 actually make a noticeable difference in an audio system?
    Yes. One verified XS Power customer reported that the SB500 stabilized voltage in an audio build and performed as expected. Another buyer described the electrical improvement as significant.
  • • Why did my charging light arrive damaged?
    One real SB500 customer reported that the included resistor charging-light bulb arrived with its glass broken and the wires pulled out because it was shipped loose. The customer was able to make it work, but specifically criticized the packaging.
  • • Can the SB500-51 replace my regular battery?
    It is better viewed as part of a complete power system rather than an automatic replacement for every battery. XS Power describes the SuperBANK for high-power applications, while other technical guidance recommends pairing ultracapacitors with an appropriate battery bank.
  • • Why does my voltage still fluctuate after adding the SuperBANK?
    The SB500-51 can help with rapid current demands, but it cannot compensate for every weakness in the charging system. Alternator capacity, battery condition, cable size, grounding, and electrical connections still need to be properly matched to the load.
  • • Do I need to charge the SB500-51 before connecting it?
    Yes. The SuperBANK must be handled and charged according to its installation instructions. XS Power lists an operating range of 12.0–16.2 volts, and charging from a vehicle alternator should be controlled within the specified voltage range.
  • • Why does the SB500-51 seem to discharge faster during continuous music?
    A supercapacitor is designed to deliver energy rapidly rather than provide the long-duration energy storage of a conventional battery. During sustained high-power playback, the charging system and battery still have to supply the continuing load. The SB500-51 stores 18.2 Wh despite its 500-farad rating.
  • • Will the Group 51 case fit where my original battery sits?
    Not automatically. The SB500-51 measures approximately 9.04 × 5.43 × 8.19 inches and weighs about 11 pounds, so checking the available space, terminal clearance, and mounting arrangement before installation is important.
  • • Why are some buyers concerned about shipping or packaging?
    There is at least one verified customer complaint involving a shipping-related issue: a Walmart buyer reported that delivery took more than a week. Separately, an XS Power customer reported receiving a damaged charging-light component because it was inadequately protected inside the package. These are individual experiences, not evidence of a universal shipping problem.
  • • Can I use the SB500-51 for a powerful system without upgrading everything else?
    It can be incorporated into a high-output setup, but the rest of the electrical system should be sized appropriately. One JEGS reviewer recommends combining an ultracapacitor bank with a suitable battery bank and high-output alternator for increased instantaneous power.
  • • Is the SB500-51 worth considering if I want faster current delivery?
    For applications where short bursts of current are important, real customers report positive results. The SB500-51 is rated at 500 farads, up to 10,000 amps, and 4,000 watts, making it specifically aimed at high-demand electrical applications.

SPECIFICATIONS


  • Capacitance : 500 Farad
  • Digital Monitor : No

FEATURES


Features:
  • TYPE: 12V Super Capacitor Bank
  • Max Amps: 10000A
  • Max Power: 4000 Watt
  • Farads: 500F
  • Operating Voltage: 12.0V - 16.2V
  • Operating Temperature: -40 - 150
  • Capacitance: 500F
  • Watt Hours: 18.2Wh
  • Max Amps: 10,000A
  • Weight Lbs. : 11
  • Weight Kgs. : 4.98
  • Length : 9.04 in
  • Height : 8.19 in
  • Width : 5.43 in
  • UPC: 692209052753
  • Weight: 15
  • Authorized Internet Dealer
Warranty: 2 Year(s) Warranty.
This item is accompanied by a manufacturer's warranty. If it is found to be defective, it may be returned to OnlineCarstereo.com for replacement within 2 Year(s) from the original date of purchase with proper return authorization.

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