| 320 / | HD | ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING | 
| 116 |  | SERIALLY CONNECTED BATTERIES OR CELLS {5} | 
| 117 | DF | .~> Switchable to parallel connection | 
| 118 | DF | .~> With discharge of cells or batteries | 
| 119 | DF | .~> With individual charging of plural batteries or cells | 
| 120 | DF | .~> Having variable number of cells or batteries in series {2} | 
| 123 | DF | .~> With generator charging source |