I have a Acer Aspire V5 laptop. When I was running Win 8.1, the battery life wasn't great, but lasted about 2 1/2 - 3 hours.
Now that I upgraded to Windows 10, the last time I turned it on the battery meter said 52 %. Two minutes later, it was dead.
I just turned it on after charging it, and the meter read 98%, 1 hr 50 min remaining. I haven't touched it yet, and five minutes later the battery's down to 90 %, although it says that there's 3 hr 5 min remaining. When I do any work on it, the battery goes down drastically. Does this have anything to do with Windows 10?