No, you need to recharge it, the battery is not removable.

As far as we know, it cannot be changed as it is permanently installed. After use, however, the self-cleaning function must be activated anyway, for which the device is placed on the (charging) base station. The battery is then also recharged.

I've just bought this hoover recently, I don't quite understand the question, my appliance is new. I don't know if you can find batteries, but they must exist.

unfortunately not