XS Power SuperBank 12V SB-500 (Ultra Capacitor)


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


Only 2 left in stock (can be backordered)


XS Power SuperBank Capacitors with over one million charge cycles offers an instantaneous surge of extremely high energy and recharge quickly for continuous performance.

XS Power SuperBank can help reduce the strain on batteries, helping them last longer. With a properly sized cap bank, you can minimize the effects of voltage loss on your electrical system and improve the overall efficiency of charge/discharge. Ultracaps can be very dangerous in the hands of an inexperienced user. For this reason, loose cells are no longer sold to general public as the SuperBank instantly removes the chance of incorrect assembly. The Installation of a fully assembled SuperBank is as simple and easy as installing a battery, and little to no risk of injury or damage during installation.

Product Description:

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

Operating Voltage: 12.0V – 16.2V
Operating Temperature: -40 – 150
Capacitance: 500F
Watt Hours: 18.2Wh
Max Amps: 10,000A
Weight: 5kg

We recommend a bank for every 2kW for music, and a minimum of one. And for every 4kW for burps. Obviously, the more you use, the less voltage drop you would see.

SB500 is equivalent in discharge power to a XE12-65, just without any capacity. So in other words, it’s good for one or two burps at 4,000W before it is completely dead. The advantage is that the charge up just as quickly as they discharge, so if you are using a battery and a cap together, you get the best of both worlds.

Available in 8 different cases. If you already have a XS Power XE or D Series battery you may want to optimize you installation possibilities by having the same case type battery. Example XE12-50 will be the same case as the SB500-47. Use the list below to identify which is the correct matching case to your existing XS Power battery. Its not essential to have the same case type but why fret when the options are there!

D5100 = SB500-51
D2400 = SB500-24
D6500 = SB500-65
D2700 = SB500-27
XE12-50 = SB500-47
XE12-60 = SB500-48
XE12-65 = SB500-34
XE12-80 = SB500-49


Q: What are the benefits of using them?
A: Ultracaps can help reduce the strain on your batteries, helping them last longer. With a properly sized cap bank, you can minimize the effects of voltage loss on your electrical system and improve the overall efficiency of charge/discharge.

Q: Can I use only caps and no batteries?
A: Yes, but we do not recommend it because there are excellent benefits that both the cap and the battery can offer, so why not take advantage of both and save the most money? After over a year and a half of testing, our recommendation is to use one ultracap bank for every 50Ah of battery capacity for burps, or one ultracap bank for every 100-120Ah for music.

Q: What is an ultracap bank?
A: 6 cells must be used for a 12V bank (16.2V max), and 7 cells must be used for a 16V bank (18.9V max), as each cell is 2.7V each.

Q: Do we recommend these instead of batteries?
A: No, batteries are still the simplest and most affordable way to get the power you need for most users. However, for those who are serious about competition, ultracaps can help to increase SPL scores in short bursts or short duration.

Q: I already have some ultracaps from another company, can I use these in parallel with my other caps too?
A: Yes, but as with anything in SPL competition, the more consistency you can build into the system, the better.


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Additional information

Weight 5 kg
SuperBank Model

SB500-47, SB500-51, SB500-34, SB500-48, SB500-24, SB500-65, SB500-27, SB500-49


UK Delivery

All items ordered before 14.00pm are shipped the same day unless otherwise stated at the time of ordering. Orders placed after 14.00pm on a Friday will be shipped the following Monday (excluding bank holidays, in which case it will be the next working day). If the item is out of stock for whatever reason you will be emailed within 24hrs to inform you of this. Our site manages stock inventory so if it says ‘IN STOCK’ that means goods are available for immediate dispatch.

  • Shipping will be calculated at the checkout.
  • Free shipping available for customers in the UK mainland ONLY when orders are over £50.
  • We use Interlink Express for all UK next day deliveries (aswell as for orders over £50 if the weight exceeds 2kg) and Royal Mail Recorded Post for orders under 2kg.

Make sure you supply us with a mobile number when you order, then we can give you full tracking information & updates on your order throughout the process.

Clicking on the above image, will also allow you to track your order online. If you have any questions or queries, contact our helpful office team on sales@bladeice.com

Free Delivery

Free delivery is available to UK mainland addresses ONLY and excludes addresses in the Scottish Highlands & Islands and Northern Ireland. Free delivery is applicable to orders over £50.00 (inc vat) ONLY. This offer doesn’t necessarily mean your goods will be sent on a courier next day service. However assuming the weight exceeds 2kg your goods are usually sent via courier (Interlink Express).

Guranteed 24 Hour

  • Next Day Delivery – Over £50 Inc. VAT – Any weight – Free!
  • Next Day Delivery – 2-5KG – £8.00
  • Next Day Delivery – 5-20KG – £9.99
  • Next Day Delivery – 20-30KG – £11.99
  • Next Day Delivery – 30-40KG – £15.00
  • Next Day Delivery – 45KG+ – £50.00


  • Royal Mail 1st Class Recorded 1-3 working days – Upto 1KG – £4.45
  • Royal Mail 1st Class Recorded 1-3 working days – Upto 1-2KG – £6.90
  • Royal Mail 2nd Class Recorded 2-5 working days – 0-2KG – £3.95


  • Royal Mail Special Delivery Saturday – Upto 2KG – £14.00
  • Courier Saturday – Upto 5KG – £15.95
  • Courier Saturday – 5-20KG – £19.95
  • Courier Saturday – 20-25KG – £22.95

Orders MUST be made before 2pm Friday

Back Order

Items that are listed with ‘Back order’ usually means there is around a 5-10 working day delay for the item to be back in stock. Some items are listed in this way as they are a low volume product and are considered special order with our suppliers.

European & International Delivery

Blade ICE ships internationally to many countries in Europe. Based on the weight of your order shipping will be calculated at the checkout.

Blade ICE reserves the right to charge the full shipping fee applicable to resend if the item is returned to us as the customer was unable to take delivery of the parcel for any reason. Courier returned items will be added back into our stock and your account credited with the order total, minus the fee the courier charges us to deliver the item back to us. You will have to re-place the order to have the item reshipped. If a customer inputs any incorrect details on their order, which causes the parcel to be delivered incorrectly, we will not hold any responsibility for this parcel.

Finally we advise you to check the contents of the order with the inventory sent with the goods. In the rare instance that goods are missing, please contact us within 24 hours and we will happily send out the missing goods at no extra cost to you. If goods are damaged or faulty please inform us within 3 working days of receiving your order.

Please refer to our Terms and Conditions for more information.