There are lots of consumer devices that run on rechargeable batteries and have those batteries non-removable without disassembling a device. The most notable example is I guess an iPhone.
Making a battery non-removable has these advantages:
- simpler case - no need for the door that would otherwise need to be strong enough to survive careless operations by the user
- better case sealing
- tighter packing of the battery into the case allows for more space for other components or smaller case
- users are forced to use service shops that can generate money for the manufacturer through "authorization" programs
Yet none of these reasons seems to have any electrical design basis.
Are there electrical design reasons for making rechargeable batteries non-removable?