The component with the lowest price in the BATTERY schematic is the Protector(50x50x5).
Parts such as the Battery: Wire,battery Minus, Protector(170x95x3.0), Protector(170x95x3.0), Protector(50x50x5) are included in the Vl800 Boulevard C50 2011 (l1) Usa California Canad (e03 E33 E28) Battery parts fiche.
The Vl800 Boulevard C50 2011 (l1) Usa California Canad (e03 E33 E28) Battery consists of nine pieces with the Battery Assembly (12v) Ftx being the most expensive.