phone battery

[eggsbeans]

Hi having problems with my phone once it hits about 80% on the battery it switches itself off any ideas its a galaxy s2

 

[Killah1994]

Hi having problems with my phone once it hits about 80% on the battery it switches itself off any ideas its a galaxy s2

Welcome aboard , seems like a bad battery /bad battery cable , try getting a new cable and try recharging the battery (full charge) if that doesn't work it pretty much your battery , but if you made any mods to the phone (example custom rom and kernel, try going back to stock and see if that was the problem).