The Orthofab TItan Scooter 12V 55AH battery replacement kit comes with two (2) OR-12550Z batteries needed in order to replace the depleted set within the scooter. The SLA batteries contained in this kit are guaranteed to match or exceed the OEM specifications for the Orthofab Titan Scooter. Each SLA scooter battery sent out from our facility is fully charge, and will be ready for immediate installation into the Orthofab Titan Scooter.