Hybrid capacitors, a combination of an ultracapacitor and a lithium-ion battery, providing a longer term energy source than alternative energy storage solutions on the market. Hybrid capacitors have an energy density up to 115 percent higher than standard electric double-layer capacitors (ELDCs). This allows for faster and more efficient power to applications such as LED lights used in medical devices. Compared with a nickel cadmium or lithium-ion battery, hybrid capacitors provide more than 20 times the cycle life and 60 times faster recharge rates, vastly improving LED lig...