Batteries can die with age if they are not kept charged, if it had been used 1 month and is 5 or 6 years old it is possible. Condition, especially tire and seat can give an indication of use.

All the scooters I have seen or used have two batteries a 24 volt operating system like some electric trolling motors, more volts and amps = more power.

Some brands are no longer made, getting parts to repair them could be a problem. Some are more reliable than others.

Steering on a scooter? Tiller bother or either hand, on an electric wheel chair, joy stick and some or most can be moved to either side.

Mine came with a basket on front, it was simple and cheap to install one myself on the rear also.