A New Battery can not only fix your lack of power but can also fix your overheating problem.
Note:There are 2 different type of battery ends for the S4 Mini. Ours are the type shown in the second photo. Please be sure your old battery has the same ends, sometimes the B500BE and B500AE can be the same so dont worry about the model number on your battery just make sure the ends are correct. We do have the other model in stock. (B500BE)