Regular reader will know about the ongoing problems of the Surface Pro 3 battery issues. The issue started out as Surface Pro 3 devices with SIMPLO batteries had reduced battery capacity until the point they would not work at all on battery. Microsoft fixed that issue in August but it didn’t fix all the battery issues affecting Surface Pro 3 owners of all battery types, if you look in Microsoft’s own forums there are a lot of unhappy Surface Pro 3 owners.
Yesterday Microsoft released another firmware update for the Surface Pro 3, as of now they haven’t updated the Surface Pro 3 information page but they did send out some details of the changes in a newsletter. Barb Bowman who has been pushing Microsoft to fix the issues (and one of the few trying to really help) has posted in Microsoft’s Forum what Microsoft say has changes:
Corrected a condition that causes the full charge capacity of the battery to be misreported to the operating system and device firmware on some devices.
Which is looks very much like the August change:
v126.96.36.199 corrects an error that may occur on a limited number of Surface Pro 3 devices where the full charge capacity of the battery is misreported to the operating system and device firmware. This update corrects the firmware component that functions as a “fuel gauge” so that the battery capacity is accurately reported
So it looks like the firmware change is try and fix ongoing battery issue, maybe it will be sorted this time.