friends good afternoon, I have seen the forum and I am in love with diy development, I live in Brazil and here unfortunately the imposts put out of reach the purchase of mods to have idea a mod aki comes close to almost $ 400 for taxes is very difficult, I have an incipio power pack that stopped working, as a very curious person I decided to open it, and I saw that it has a battery soldered in two terminals +/- my doubt is can I replace this battery with another from another cell phone and have my mod again? thank you very much for your help and willingness to help.