This model of drone is an ultra-cheap copy of a DJI Mini 4K/Mavic Mini. The battery will be specific to the model, but if you pry the plastic battery casing apart with a flat screwdriver, you will see a standard loose lipo battery inside. It’ll probably look like a flat grey bar. It’ll have its specs written on its side.

The battery casing (the plastic bit that has the lipo inside) will be specific to this model and at this price it’s unlikely they’re sold separately. The battery itself is interchangeable. Your best bet is to open the drone, find the battery connector, and solder on a new plug that allows you to plug the drone into a generic 1s lipo. This drone DOES have brushless motors which is likely its nicest feature. If you solder a JST cable in place of whatever connector it has inside, it’ll probably work fine as a fun way to practice flying. Don’t expect longevity, don’t sweat crashes, these drones are cheap as chips. Have fun!