Yea,I don't believe it shuts down at all during charging and charges fine. At least I don't remember it doing this, but will have to double check this. If it is indeed a battery problem, I take it this is not something I can easily fix, correct? (assuming since the unit seems totally enclosed & no battery cover or access to battery compartment)
Also, not sure if this matters & I just thought of these, but this problem will occur at ANY charge level of the battery too. 100%, 50%, 23%, etc. It doesn't matter how full or empty the battery is, it will still randomly shut down if I leave it on. And it seems it will ONLY happen when after it goes to sleep. it never shuts down while I am in the middle of using it.