[Q] Sony xperia sola charging problem

I cannot charge the battery trough the phone. The battery seems okay so i assume if i could charge it, it would work just fine. I know there are offline battery chargers, however the xperia sola's battery specific connection to the phone cause troubles. I couldn't find any specific charger for this type of battery. So my question is: If i manage to take the charging wires from the usb cable (the red and black ones) and connect them correctly to the battery, will the battery charge without destroying itself or generally, what could go wrong? I also wonder if the phone-battery type of connector is purchaseable somewhere and what's it's name.

I apologize for any language mistakes, as english is not my 1st language, and I hope you can help me.