Phil,
This is not good for the MPW, it shortens the life of the internal battery to about half within a year if always being charged. Not all lithium batteries can take this “abuse” and this is one of them, Don’t believe me, then you better read this recent post from the Forum moderator, Bill.
And, Joerg’s advice is correct.
Oh, I received your original post via email – before you edited it afterward in the post. Thanks for editing it; no need for such snarkyness here. BTW, I want to suggest you “respect your elders” a little better. You know what I am talking about. 
