Ryco battery air filters protect hybrid vehicle battery systems by filtering and removing dust and contaminants before entering the battery air cooling system, ensuring only clean, cool air is supplied to the battery system. This helps ensure the battery is kept within operating temperature tolerances by the vehicle's cooling system. The flame retardant synthetic fibre media traps particles, reducing the dust build up in the battery air system which prevents battery pack overheating and damage. Ryco battery air filters protect new car warranties when used and replaced in accordance with vehicle manufacturer guidelines.