Mercedes-Benz SLR-Class 2006 - Manual (Page 375)

374
Technical data
Electrical system
Generator (alternator) 14 V/150 A
Starter motor 12 V/1.7 kW
Battery
Starter battery 12 V/35 Ah
Battery for electrical consumers 12 V/70 Ah
Spark plugs NGK ILFR6A
Electrode gap 0.031 in (0.8 mm)
Tightening torque 18 – 22 lb-ft (25 – 30 Nm)