For sale is a 27V series array of 10 2.7V 400F double-layer electrolytic "ultra capacitors." Its simple design allows for an extremely affordable, versatile, and easy to use product.

You can use this bank to jump-start a car, store solar energy, or modify a power tool to charge instantly. For a description of the individual capacitors and more innovative ideas for practical uses, please click here

Note on Shipping I am willing to ship internationally, but please check shipping rates on your own before requesting a rate from me. Many customers ask me to calculate rates for them but are deterred by the cost of international shipping. I always ship through USPS and use the most cost-effective service. If making a large purchase, I am willing to offer a volume discount to help subsidize the price of shipping.