All models work with any car that has a standard 12V socket (cigarette lighter socket). This includes virtually every Indian car: Maruti Swift, Baleno, Brezza, Grand Vitara; Hyundai Creta, Venue, Tucson; Tata Nexon, Harrier, Safari; Mahindra Thar, XUV700, Scorpio; Toyota Fortuner, Innova Crysta, Urban Cruiser; Kia Seltos, Carens; MG Hector, Astor - all compatible. For compact cars (Swift, Baleno, WagonR), the Rockwell 15L fits behind front seats. The 20L KILIG fits in the boot of hatchbacks and sedans. For 27-30L models, you need a mid-size or large SUV boot (Creta, Thar, Fortuner, Innova). You can also use the included DC cable directly from the battery for the most stable power connection.