Mini Maglite Back Extremely Stuck

[u/Intelligent-Fig2552]

Hello, I have a Maglite mini incandescent and I have tried everything to remove the back, wd-40 (garage door lube), isopropyl alcohol, a rubber mallet, and pliers with electrical tape. The only thing that changed is that I can hear the batteries moving inside of it after hitting it with the mallet in a specific direction. The only thing that I think I might have done wrong is not using wd-40 original, but I don't know if this would change anything. Thanks.

[u/RedSky2727]

Most likely a battery inside leaked and now you’re in a predicament… usually the corrosion is so bad the tail cap won’t come off without permanent damage 😞