Chosen Solution
I replaced the battery on my Ipod Classic but it does not hold charge…. but It works when its on my Bose Docking station ????
@len yes it could mean that you have either a poor or no connection to the battery. This model is known to have a badly designed battery connector that has the tendency to break of the board. You do want to check this and replace your battery with a new one once more. Even new batteries can be duds. If you have a known-good battery and know that the connector is working properly, you may have issues with the actual dock connector. Check for broken/bend or dirty contacts on that. You can clean the dock connector with some high grade isopropyl alcohol and a few puffs or compressed air.
