Help Samsung Galaxy S2 detects charger input but does not get charged

[pallabip]

Hi,

My Samsung Galaxy S2 is not getting charged.
I kept it for charging for almost 2 hours, but did not notice it wasnt getting charged, and it got switched off due to low battery.

Now its switched off, and when I am putting it on charge it is not showing the charging indications that comes on switched off mode. But all of a sudden, it switches itself on, shows the phone has critical battery and is getting charged, and in no time shuts down on its own. after a few seconds it switches on again and this process continues all by itself repeatedly.

WHat should I do with my phone??!?!?!
Please someone suggest

 

[Rukbat]

I'd leave it, turned off, charging at least overnight. A fully discharged battery (as fully discharged as the phone will allow, anyway) will not get much charge in the first couple of hours. If it doesn't have at least 10-20% charge by tomorrow morning, you may have a problem. (It could be as simple as a bad charger or a bad cord or it could be as bad as something on the motherboard.)