Yes, I've done it myself. I bought a replacement battery for my early kindle from aliexpress for a very cheap price. I did need a hairdryer to heat the glued

Yes, I've done it myself. I bought a replacement battery for my early kindle from aliexpress for a very cheap price. I did need a hairdryer to heat the glued back and a proper plastic spudger would have been helpful. I believe I used the iFixit guides.