he 3001 replaces the three most common items used in a garage: jumper cables battery chargers and air tanks. To save space and labor costs the 3001 incorporates 5' retractable jumper cables a heavy-duty 10 amp charger and an automatic shut-off air compressor that can inflate a 14" car tire in less than 2 minutes! Utilizes a user-installed battery and accommodates battery size to Group 31.