LICAP Lithium Ion capacitor cells are rated at 3.8V and come in 200F, 800F and 3000F sizes.  The 200F is a standard 18650 form factor and the 800F is a standard 32650 form factor.  The 3000F is an industry standard 65mm diameter, just like our large ultracapacitor cells.  All 3 cells are axial lead configuration. Lithium Ion Capacitor cells are more than 3x energy dense than ultracapacitors and have a long life and high power capability as compared to batteries.  Please review the datasheets for additional specifications.