There are integrated units which contain both an AC pump and a 12 volt back up pump. We had one of these in a former home and it provides both a battery back up for when the power is out and since the float for the back up pump is set at a lever higher than the float for the AC pump, it provides pumping if the primary pump were to fail.
See, for example:
https://www.homedepot.com/p/Wayne-Up...30VN/307352334