The lowest total cost of ownership beats higher up-front cost in most green projects and subtleties of design increasingly provide just that. For intensive cycling, that deep discharge tolerance means buy one-third of the kWh in the supercapacitor alternative. No battery replacement cost during project life means money saved. Often no special disposal costs – no serious poisons, no valuable metals to retrieve saves money and reputation. Where needed, the new 80-100Wh/kg supercapacitors (Aowei or Toomen in China, others soon) have ten times the battery cycle life yet one tenth of supercapacitor size, weight, self-leakage. These LICs have the tiniest amount of doped lithium and heavy metals so disposal is still trivial, no transport restrictions. Pure supercapacitors will still be needed for other superlatives.