320 / | HD | ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING |
FOR 101 | DF | BATTERY CHARGING AND/OR DISCHARGING (320/2) {15} |
FOR 148 | DF | .~ Battery circuit control (320/49) {4} |
FOR 149 | .~.~ With bucking and/or boosting e.m.f. in charging circuit (320/50) |