This is a genuine original 12V 45 AH Hankook auxiliary battery for the 2017-2022 Tesla Model 3. It is a high-quality replacement part for your vehicle's battery system. The battery is designed to provide reliable and consistent power to your car's electric and hybrid systems. The OE/OEM part number and manufacturer part number are both genuine original, ensuring that you are getting a authentic product. This battery is compatible with a variety of electric and hybrid vehicles, so be sure to consult your owner's manual or mechanic if you are unsure about compatibility.