I have been talking to MS tech weenies trying to figure out just why my Power Cover doesn't want to "top up" it's charge to 100% unless it AND the internal PS2's batteries are really low. In other words, if just the PC's battery is down to 20% or so and I hook up the charger, after an hour or two, the charger's little LED goes off and the PC's battery only goes up to maybe 50 or 60 percent. Microsoft tells me that the LED in the charger cable should STAY on as long as it is connected. I never knew that since I didn't have anyone with a SP2 to compare notes with. Is this what you Guys find? As a result, they say I've either got a defective Surface or charger one. If this is so, I hope it's just the charger. Has anyone else seen this issue?