Electrical system 300 >> Technical data. Electrical system All models Generator (alternator) 14 V/90 A Starter motor 12 V/0.95 kW Battery 12 V/42 Ah Spark plugs DENSO XU22 HDR9 Electrode gap 0.035 in (0.9 mm) Tightening torque 1115lbft(1520Nm)