Ytx9-bs battery as fitted as standard to all Hammerhead 150cc buggys, this battery will also suit Motoroma, Kandi, PGO and other makes of Buggies and quads, It is also suitable for use in Motorbikes. It replaces Hammerhead part number 6.000.085
See battery upgrades also,
Ytx12A-BS Upgrade battery for Hammerhead 150cc