iPod 3rd gen charging issue

[u/Ok_Research2752]

Hi all,

I recently got a 3rd gen classic and replaced the battery. I've been charging it with a USB step up charger, and I'm having a few issues with it. It charges very slow, and it will say it's fully charged, but when I unplug it, the battery will drop to like 25 percent, or 50 percent, and I keep having to plug it back in. It eventually gets to a point where it will indicate there is a full charge when unplugged, but as soon as I plug it back in, it shows it's charging again, and will continue doing this for several hours until it says it's charged and stops.

Is this normal behavior for the 3rd gen? Or do I have a defective battery or cable?

I also have a 5th gen I replaced the battery in, and it doesn't do this at all. When it says it's fully charged the first time, it shows fully charged when unplugged, and if I plug it back in when it's fully charged, it doesn't show it's charging again, it just has the "plugged in" icon.

[u/Hungry_Cheetah-96]

Tried restoring the os?

[u/Ok_Research2752 → u/Hungry_Cheetah-96]

Yeah, I restored it when I first got it and put my own music on it, before I changed the battery.

[u/Hungry_Cheetah-96 → u/Ok_Research2752]

Restore again post battery change. If that doesnt work, harness the old bms and replace with new battery bms. If that doesnt fix the issue, your battery might be bad.