When ever I disconnect my samsung galaxy tab 2 from charger in gets switched off automatically how can I fix that??

[meetp6383]

I have samsung galaxy tab 2 version 4.2.2, and when ever I disconnect my phone from charger or turn my charger's switch off my phone gets switched off automatically!!

How can I fix this problem

 

[webworkings]

Sounds like your battery is not working properly and needs replacing.