dustie wrote:
If the battery is not ejecting only because the spring fell out, not because of an overly tight fit due to swelling of the case, it does not seem it will require any great amount of force to remove it.
Sticky tape may possibly be able to hold on for extracting it, or with open battery compartment facing downward, a little tapping like a Marlboro Man tapping a cigarette out of a new pack may be successful.