If your display always reads 100% then your display may not be calibrated correctly.
That can be solved by holding the button on the back of the display before the board turns on then clicking it until it reaches L10. When you turn the board on, the display should say L10 if it says anything else, you should follow this guide.
Open your enclosure by removing the 8 screws with an M3 hex tool
Step 1) Turn the board off
Step 2) Turn the board on while holding the button behind the LCD (see photo below)
Step 3) Click the button behind the LCD until it reaches L10
Step 4) When at L10, turn the board off and back on.
Step 5) Follow this guide for resealing your Raptor https://enertionboards.zendesk.com/hc/en-us/articles/360000340975-How-to-reseal-your-R2-after-opening-it