Sony Vaio notebooks will a lot of times use the same battery model across multiple model numbers. Some the older models might not recognize the newer replacement battery since it was not programmed when that notebook was produced.
The first thing to do is update your power bios on your laptop. 90% of the time, our customers have been able to fully utilize their notebook power settings with the proper battery readings after the bios update.
Visit Sony E-Support at
1. Enter in your model number (ex. VGN-S1HP) or choose their "Detect My Model" button to get the process started.
2. You should be able to find the update based on what operating system you are using.
3. Just download and run the update.
Hope this helps.