Battery Booster closes apps running in the background to help you conserve battery power. You can select which apps you want to always keep open so they won’t be closed by dfndr performance’s Battery Booster by following these steps:

1- Open dfndr performance, select menu  and then select “Settings” .

2- Tap on “Battery Booster“.

3- Scroll through the list of all the apps on your phone. Toggle the button to the right to for all apps that you want to leave running, or leave the switch to the left for apps you want Battery Booster to close.