HP L48036-001 is a leather cover with an integrated battery for HP Spectre laptops. It combines both in one replacement part, so the cover and battery are replaced as a single assembly.
The listing associates it with HP Spectre Folio 13-ak0000, 13-ak0700, 13-ak1000 and 13t-ak1000. Check the model reference when matching this part to a laptop.
It is intended for use with these listed Spectre Folio models as a combined cover and battery assembly.