Wheelchair and scooter batteries come in a variety of qualities. They are rated in cycles ( How often you can discharge them then recharge them and have them still work ) as opposed to over how many months. The warranty may say something like they are one year but technically speaking, you want to know how many cycles you will get from them for the money. The batteries designated EV (for Electric Vehicle) will outlast any generic battery for any purpose of any size. For not m