Turning on Low Battery Power Mode is a good way to save up on charge but not many people know this that alongside reducing frequency of push notifications and stuff like screen on time, this mode also reduces performance on your phone, app crashes might be more common, some apps will stutter a lot and according to some people using this mode frequently can have a negative impact on your phone’s life. My recommendation is to use this mode sparsely and always keep an external battery pack, car charger or fast charger handy.
Some other recommendations would be to:
-Turn off locations services
-Turn off background app refresh
-Turn off animations
-Turn off push notifications
-Use 3G if possible and turn off 4G/LTE as its not stable anyway in Pakistan yet