I am having the same problem with a Ebay purchased Eclipse…  happened with the original 3.0 OS as well as after I upgraded to 4.01.

Is this a user replaceable item, is it a part available at typical places that sell batteries?

I am comfortable opening the thing up and checking connections and replacing a battery,  any other precautions other than making sure the power cable is unplugged?

Thanks,

-jas