Can I buy a battery that will last longer and allow me to go a longer distance with my mobility scooter on a full charge?

QUESTION: Can I buy a battery that will last longer and allow me to go a longer distance with my mobility scooter on a full charge?

Yes. This is often an option when buying your device and may be also arranged by contacting the manufacturer. Note, however, that many models are limited to specific batteries that are unchangeable.