Time for some photos:
350F caps in series with LED balance circuit built into the board. 4.2Ah LiFePO4 battery connected to supercap board with a series resisistor to limit current. Power leads cut at different lengths to minimize chance of accidentally touching them together.
400F supercaps in series, with ghetto tape holding it together and ghetto LED balance leds in parallel across the caps. This is what has been my motorcycle "battery" for the past 4 years.