Use APKPure App
Get [Battery Theme] Nature old version APK for Android
Battery theme for Beautiful Battery Widget
NOTE: This is premium theme for Beautiful Battery Widget!
1) You need install Beautiful Battery Widget first:
https://play.google.com/store/apps/details?id=com.danelab.beautiful.battery
2) Unlock premium themes
3) Install theme
4) Now you can select premium theme from themes gallery.