My first iPod was not charging right and not responding.
I thought the old iPod was past it's life. I ordered a replacement battery and installed it. Opening the case was not easy but I managed. I reformatted, synced, and charged the iPod and it's back to life. Instructions were very clear.
I am a 40+ year old female and not a tech y. I have good dexterity skills for fine work. Weak eyes may need strong glasses and good light. I've ordered a battery for an iPod gen 4.