Sp3 i7
Screen 25%
Wifi on
Keyboard attChed
No pen
Fresh reboot
Battery care shows -9 to -18 w discharge rate
Fan not running
Browsing, email, word
Getting about 1%
Per minute discharge
Task manager shows 95% cpu time idle
Just started
Ideas?? Is batery defextice?!!
Since you've stated that its a new surface. Within a few days. I believe your battery times are pretty good. When you first get and start using the surface, there are a lot of thing going on in the background. Such as windows is indexing everything, running first time scans, running background updates and things like this. The batteries themselves are still new and haven't had a change to charge discharge a few times, when all this happens and is done. Windows will be set up and ready to go and not need to run in the background, and the battery will know exactly what is fully charged and drained and be able to run it better.
There are several battery life helping/saving forums on this site. A suggest you read through them and get a good idea of what is all available to gain some additional battery.
I have the i5 version 8gb/256, and I get about 5 hours now. But I also have brightness high, and keep a lot of things on instant sync. When I first got it I was getting around 4 hours if that. A week or so later and trying a lot of battery saving things left me with 7 to 8 hours. I ran that way for a few months, but for the most part id prefer to have everything instant synced and have to throw on charger during lunch and run whatever I want, rather than be ok until supper. I use my surface all day everyday. It will either last me to supper if I do everything battery, then I charge it so I can use it until I go to bed/fall asleep. If I run it my way, ill top it off at lunch, and then itll last me until I fall asleep at night.