Replaced battery & now it's cycling Logo, Sad Face & Low Battery

Replaced battery & now it's cycling Logo, Sad Face & Low Battery
I replaced the battery on the 40GB Mono Chrome iPod 4th Gen. I followed the guide to the T. Now I have it back together and plugged it into my Mac. It's cycling through the Apple Logo, then the Sad Face with the support url, and then to the Low Battery symbol. It stays on the low battery symbol for about 3-5 minutes then starts over.

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