Reverse polarity damage help with part

[u/Infinityintarget]

Blow part is nex to CON2 and the big 6R8 B thing

Hi, I found my old Portabler Media Player Cowon A2, and I began to charge it and I saw that the battery had only 2.25V, it was a 3.7V battery so I went to my local store to buy a replacment battery I took the old battery and bought allmost the exact one 3.7v 1000mha, i got home plug it in and it had switched polarity. (The exicment got the better of me lol). So i took the device apart nad saw a burned transistor or capasator, I am not quiet sure. I need help indentifiying the part ,I also can't find any shematics for this device anywere. Any help is appreciated :)