Steven Sinofsky, president van de Windows and Windows Live divisies, heeft een uitgebreide reactie op het Engineering Windows 7 blog geplaatst. Sinofsky schrijft: "At this time we have no reason to believe there is any issue related to Windows 7 in this context,". Hier is zijn volledige uitleg:

"Several press articles this past week have drawn attention to blog and forum postings by users claiming Windows 7 is warning them to "consider replacing your battery" in systems which appeared to be operating satisfactorily before upgrading to Windows 7. These articles described posts in the support forums indicating that Windows 7 is not just warning users of failing batteries - as we designed Windows 7 to do this - but also implying Windows 7 is falsely reporting this situation or even worse, causing these batteries to fail. To the very best of the collective ecosystem knowledge, Windows 7 is correctly warning batteries that are in fact failing and Windows 7 is neither incorrectly reporting on battery status nor in any way whatsoever causing batteries to reach this state. In every case we have been able to identify the battery being reported on was in fact in need of recommended replacement

Sinofsky goes on to explain that PC batteries inherently degrade in their ability to hold a charge and provide power, and ultimately batteries must be replaced to restore an acceptable battery life (batteries usually have a warranty of 12 months). Windows 7 taps into a feature of modern laptop batteries which have circuitry and firmware that can report the overall health of the battery in Watt-hours power capacity. Windows 7 then calculates the percentage of degradation from the original design capacity; the threshold is set at 60 percent degradation, so if the battery is performing at 40 percent of its designed capacity then users will see Windows 7 report that it might be time to change the battery."

Daarnaast merkt Sinofsky op dat de nieuwe accu status berichten alleen in Windows 7 zit en niet in andere Windows distro's, dus veel gebruikers hadden er nooit achter gekomen dat hun accu stervende is.

Sinofsky vraagt gebruikers die geloven dat ze de berichten krijgen waar dat niet zo moeten, om contact met Microsoft op te nemen via het TechNet forum of het Microsoft Answers forum.