While some users had hoped a recent set of firmware updates for Surface Pro 3 -- the first for those devices in three months -- might fix the battery-drain issue, Microsoft officials said that wasn't the case. That set of firmware updates was meant to increase battery life during sleep mode and improve keyboard stability only, a spokesperson told me.
I asked Microsoft officials about the reported battery-life issue several times over the past week-plus. I was told by a couple of different spokespeople that "Microsoft is investigating reports of a separate question regarding Surface Pro 3 batteries in which the system is reporting lower battery capacity than expected."
On July 26, Microsoft provided an updated statement on the situation via the company's support forums.
"We are aware of some customers reporting a scenario with their Surface Pro 3 batteries in which the system is reporting lower battery capacity than expected. We've isolated this to a limited number of customers experiencing this issue. Based on our investigations we can confirm that it is not an issue with the battery cells, and we believe this is something that can be addressed via software. We're working through the details of how we deliver that."
Microsoft is not saying when or how the company expects to push out the fix (I asked).