I have an iPod Photo 4th Gen. Just replaced the battery. Org battery would not even allow it to boot. New battery has some life, so it boots fine. When connected, it shows the blinking "Charging", but the battery is not charging. IT's been sitting here for hours and battery shows same life, ~ 20%. I'm thinking that it might be the charging IC. Anyone know which IC it might be, or any suggestion? Battery has 3 wires, not sure which one is used for charging. Was thinking of trying to measure charging current. Any suggestions would be appreciated. Blew out the charging connector - no obvious foreign matter.