You are downloading the Battery Performance XAP file v18.104.22.168 for Windows Phone. Battery Performance is a paid and useful Productivity app: No. 1 on Windows Phone! Check this out! Battery Performance is a great software which in a more natural way shows visual information ... You can now download the offline XAP file to install & try it.
Download Locations for Battery Performance 22.214.171.124 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Battery Performance XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.