The Spaces app now allows the user to update firmware easily. In order to update the firmware of the battery and improve its performance.
To update Firmware you have to follow the next steps:
Open Spaces App
Choose your desired room with the hardware
Press the three-dot section in the top right corner
Scroll down and press Update Firmware
The updating firmware process takes about two minutes and will notify you when it's done updating.
Once it has been updated:
Open the Spaces App again
Go to the desired room with the hardware
Press Sync Battery
After this process, the battery performance and percentage will improve