MagLite Mag-Lite& Flashlight "remove corroded batteries mini" Questions

...corroded and stuck. When I remove the front reflector housing, the plastic cap with the bulb says "Do not remove". Can I remove this cover to be able to push the battery out? yes u can just ...

remove it by first removing the lens and bulb so as not to break it. Then I slammed slamming the barrel down hard onto the carpet on our floor. This hard shock jarred the battery loose and it came out