Assertion: pen's battery | /r/HasProperty | removable
Facets:
value: often
type: DEGREE
value: from the device
type: OTHER
Source sentences:
text: It utilizes dual 18650 batteries that are removable from the device and will require an external charger.
text: It uses two high-drain 18650 batteries that are removable.
text: Batteries are often removable and are better served with the addition of an external charger.